Abbreviations / Aviation / B – D
This is the second part of the Abbreviations / Aviation list.
List of abbreviations
| Part 1 | A. | A. |
| Part 2 | B-D |
B ( BA , BB , BC , BD , BE , BF , BG , BH , BI , BJ , BK , BL , BM , BN , BO , BP , BR , BS , BT , BU , BV , BW , BY , BZ ) ; C ( CA , CB , CC , CD , CE , CF , CG , CH , CI , CJ , CK , CL , CM , CN , CO , CP , CR , CS , CT , CU , CV , CW , CX , CY , CZ ); |
| part 3 | E – K | E ; F ; G ; H ; I ; J ; K |
| Part 4 | L-R | L ; M ; N ; O ; P ; Q ; R. |
| Part 5 | S-Z | S ; T ; U ; V ; W ; X ; Y ; Z |
| Part 6 | Russian abbreviations | |
| Part 7 | numbers | numbers |
| Part 7 | attachment | Abbreviations NOT taken into account ; Sort criteria |
| Part 7 | Examples | Flight plan ; VFR Bulletin ; METAR |
B.
(to the next letter - C) ... (to the beginning of the list)
BA , BB , BC , BD , BE , BF , BG , BH , BI , BJ , BK , BL , BM , BN , BO , BP , BR , BS , BT , BU , BV , BW , BY , BZ
| B. | Bravo | Int. Spelling Alphabet ( ICAO Alphabet ) |
| B (+ number) | Blue (or Bravo) | Blue airway (+ number) |
| B. | Class-B airspace | Class B airspace ( airspace structure ) |
| B. | Bomber (aircraft) | Bomber (for example B-17 ; B-29 ; B-47 ; B-52 ; B-1 ; B-2 ) |
| B. | Boeing | |
| B. | Category B Aircraft | Aircraft of speed category B - in landing configuration the approach speed (1.3 x V S ) is 91–120 kt |
| B. | System B = system no.2 (to differentiate from system A = system no.1; in some systems also with R - right and L - left - differentiated; at Airbus the three redundant systems have color names) | |
| B. | Economy Class special tariff (Lufthansa and Star Alliance booking code ) - see: Booking class | |
| BA | Balance arm | Lever arm for center of mass calculations |
| BA | Braking action | Braking effect |
| BA | Operating instructions | |
| BA | Business Aviation | |
| BA | Balloons and Airships | Balloons ( hot air balloon , gas balloon ) and airships |
| B / A | Bank angle | Lean , bank angle |
| B / A | Battery / Charger | |
| BAA | British Airports Authority | BAA plc - major airport operator - three London airports, four more UK airports, Naples and Budapest |
| BAC | British Aircraft Corporation | British aircraft company |
| BAC | Blue Aircraft Configuration | |
| BADV | Groundhandling Regulation | |
| BAE | BAE Systems | The largest arms company in Europe |
| BAe | British Aerospace | British defense and aviation company |
| BAeA | British Aerobatic Association | British Aerobatic Association |
| BAF | Federal Supervisory Office for Air Traffic Control | |
| BAG | Baggage | baggage |
| BAHAMAS | Baggage Handling and Management System | |
| BAI | Battlefield Air Interdiction | Battlefield lockdown |
| BAL | balance | balance |
| BALPA | British Airline Pilots Association | British Air Transport Pilots Association |
| BAO | Operational order | |
| bar | Air pressure unit (outdated) - mbar is the same number as the more modern unit hPa | |
| BAR | Belgian Army | Belgian army |
| BARKY | Board of Airline Representatives in Germany | Association of the airlines represented in Germany |
| BARO | Barometric | barometric ( barometric altitude measurement ) |
| BASA | Bilateral Aviation Safety Agreements | |
| BASE | Cloud base | Cloud base (weather key) - Spread x 400 = BASE in ft |
| BASH | Bird aircraft strike hazard | Bird strike risk |
| BASI | (Australian) Bureau of Air Safety Investigation | Aircraft Accident Investigation Authority ( Australia ) - Part of the ATSB - Australia Transport Safety Bureau |
| BASE | British Airways Safety Information System | |
| BAT | Battery | battery |
| BATT | Battery | battery |
| BAUA | Business Aircraft Users Association | Member of the National Business Aviation Association - NBAA |
| BAZ | Back Azimuth Station (MLS) | (Microwave Landing System) |
| BAZ | Federal Office for Civil Aviation Switzerland | |
| FOCA | Federal Office for Civil Aviation (Switzerland) | Federal Office for Civil Aviation (Switzerland) |
| BB | Back beam; Back Course | rear guide beam (see: instrument landing system ) |
| BB | Restricted Commercial Pilot License | Limited commercial pilot license |
| BB | Battery bus | (there is also a hot battery bus) |
| BB | Broad band | Broadband |
| BBC | (Russian) Военно-воздушные силы, Woenno-Wozdushnye Sily (WWS) |
Russian Air Force |
| BBI | Berlin Brandenburg International | By 2009, the plan name under construction airport Berlin Brandenburg to the south of Berlin , the partially on the site of the present airport Berlin-Schönefeld is being built |
| BBJ | Boeing business jet | a business jet |
| BBMF | Battle of Britain Memorial Flight | |
| BBML | Infant / Baby Meal (Catering Code) | Toddler meals - see: airplane meals |
| BC | Patches | Swath - French: banc; in some places (weather key for METAR and TAF ) |
| BC | Back Course (ILS) | Reverse course of an ILS (also BCRS) |
| BC | Bus controller | |
| B / C | Back Course (ILS) | Reverse course of an ILS (also BCRS) |
| BCA | Boarding Control Assistant | |
| BCAR | British Civil Airworthiness Requirements | |
| BCD | Binary Coded Decimal | binary coded decimal numbers (dual coded decimal numbers) |
| BCFG | Fog patches | Wafts of mist |
| BCH | Beach | Beach |
| BCK | Back | back, on the back |
| BCM | Back course marker | Reverse course floor signs (analogous to OM and MM for normal ILS course) |
| BCMG | Becoming | Coming weather change (permanent change; otherwise TEMP - temporary) (weather key for METAR and TAF ) |
| BCMT | Begin of civil morning twilight | see ECET (End of civil evening twilight) |
| BCN | Beacon (aeronautical ground light) | Beacons (aviation ground lights); Beacon - see: lighting |
| BCOB | Broken Clouds or Better | Broken clouds or better (weather key for METAR and TAF ) |
| BCPL | Basic Commercial Pilots License (UK) | |
| BCRS; B / CRS | Back Course (ILS) | Reverse course of an ILS (also BC) |
| BCST | Broadcast | Broadcasting ; Broadcast |
| B / D | Bottom of Descent | Lower point of descent |
| BDC | Bottom dead center | bottom dead center |
| BDCST | Broadcast | Broadcasting ; Broadcast |
| BDF | German Airline Association | Federation of German Airlines |
| BDLI | Federation of German aerospace industry e. V. | Federation of German aerospace industry e. V. |
| BDRY | Boundary, Airspace Boundaries |
Border; Boundary |
| BEA | Bureau d'Enquêtes et d'Analyses pour la sécurité de l'aviation civile | French Aircraft Accident Investigation Authority |
| BECMG | Becoming | It will be; the weather turns into ... (weather key for METAR and TAF ) |
| BEPS | Backup Electrical Power System | ( Boeing 777 ) |
| BET | Boeing Equivalent Thrust | |
| BETA | Beta range on propellers - negative angles of attack of the propellers (usually related to reverse pitch) | |
| BEV | Beverage | beverages |
| MOVE | Basic Empty Weight, Basic Aircraft Empty Weight |
Base empty weight |
| BF | Block fuel | total amount of fuel fueled |
| SFOE | Buyer Furnished Equipment | |
| BFL | Balanced field length | Optimized take-off route (the BFL is the required take-off route at a point on the runway where an engine fails at the critical speed - Vfail). The distance for a start abort should be the same as the distance for a start continuation. It is about the decision point for a "worst case scenario". An engine failure before this point requires the take-off to be aborted; an engine failure after this point requires the start to continue. |
| BfL | Air traffic control officer | |
| BFM | Basic fighter maneuvers | |
| BFO | Beat Frequency Oscillator | Local oscillator (switch position on ADF); Beat buzzer |
| BFR | Before | in front |
| BFR | Biennial Flight Review | Inspection flight (every 2nd year) |
| BFU | Federal Agency for Aircraft Accident Investigation | |
| BGS | Federal Border Guard | |
| BGW | Basic Gross Weight | |
| bra | Block hour | |
| BHDOC | Block-Hour Direct Operating Costs | |
| BHP | Brake horse power | Power on the propeller shaft (see: horse power ), practically identical to Shaft Horse Power - SHP; BHP emphasizes the method of determining the force, SHP emphasizes the magnitude of the force on the shaft |
| BIEK | Federal Association of International Express and Courier Services e. V. | |
| BIFUR | Bifurcation | Junction, fork |
| BIRDTAM | Bird NOTAM (Notice to Airman), Bird Risk Warning; Bird warning message; Bird Migration Warning |
Bird migration warning; Bird strike warning |
| BIT | bitumen | bitumen |
| BIT | Built in test | Built-in test ( Built-in self-test - BIST) |
| BITD | Basic instrument training device | Simple instrument flight training device (according to JAR-STD 4a) |
| BITE | Built in test equipment | Equipment for the Build In Test (BIT); Built-in test equipment |
| BIZ | Business | for example Biz-Jet ( Boeing Business Jet ) |
| BIZAV | Business Aviation | Business aviation |
| Bj. | Construction year | |
| BK | Brake | brake |
| BKGRD | Background | background |
| BKN | Broken | Torn cloud cover (broken clouds) - 5/8 to 7/8 (weather key for METAR and TAF ) |
| BL | Blowing | blowing; drifting (weather key for METAR and TAF ); blowing - followed by DU (Dust), SA (Sand) or SN (Snow) |
| BL | block | Block (block time) - e.g. B. ON BL; OFF BL |
| BLACK | Black | black (weather key - military - airfield cannot be approached, but not because of the weather minima, but for other reasons; this is followed by a color level - for example AMB - amber - amber) (see: color code ) |
| BLC | Boundary Layer Control | Boundary layer control ( hydrodynamic boundary layer ) |
| BLD | Bleed | tapped (bleed air ) |
| BLDG | Building | building |
| BLE | Boundary Layer Energizer | Boundary layer blowout |
| BLKD | Blocked | blocked |
| BLKS | Blocks | |
| BLML | Bland / Soft Meal (Catering Code) | Low-spice , mild food - see: airplane food |
| BLO | Below clouds | Below the clouds (weather key for METAR and TAF ) |
| BLSN | Blowing snow | Blowing snow |
| BLU | Blue | blue (weather key - military - main cloud base 2500 ft, ground view 8 km) (see: color code ) |
| BLU + | Blue Plus | blue plus (weather key - military - no main cloud base , ground view 8 km) |
| FOAG | Below | below (weather code for METAR and TAF ) |
| BM | Back marker | |
| BMAA | British Microlight Aircraft Association | |
| BMC | Bleed Air Monitoring System | System for monitoring the bleed air extraction on the engine |
| BMEP | Break Mean Effective Pressure | The mean pressure in the cylinder during the combustion cycle that gives the same power that would be found on the engine test bench |
| BMV | Brake Metering Valve | Brake valve, "brake metering valve" |
| BMVBS | Federal Ministry of Traffic, Construction and City Development | |
| B / N | Bombardier / Navigator | Weapons system officer and navigator |
| BND | Bound | Direction (for example West-Bound - flying westwards) |
| BNDRY | Boundary | Border; Limitation |
| BNR | Binary Numerical Representation | |
| BOD | Bottom of Descent | lower point of descent (this is where the approach usually begins) |
| BOLDS | Broughs Optical Lens Docking System | |
| BOMB | Bombing | |
| BOSTA | Booking status | Booking status (flight information for purser ) |
| BOV | Bias out of view | |
| BOW | Blank Operation Weight, Basic Operation Weight, Basic Operating Weight |
Absolute curb weight (weight without usable fuel) |
| BPCU | Bus power control unit | ( Boeing 777 ) |
| BPP | Bus protection panel | (B-737) it checks the external energy supply for permissible values and only then switches on the "Ground Power Relay" |
| BPP | Best Power Point | |
| BPR | Bypass ratio | Bypass ratio |
| BPV | By Pass Valve (A320) | |
| BR | Damn | Fog (French: brume) view over 5/8 SM - otherwise Fog (FG) (weather key for METAR and TAF ) - see also FG |
| BR | bridge | bridge |
| BR | Operating direction | |
| BRAF | Breaking Action Fair | |
| BRAG | Breaking Action Good | |
| BRAN | Breaking Action Nile | |
| BRAP | Breaking Action Poor | |
| BRG | Bearing | bearing |
| BRGDS | Best regards | Best Regards |
| BRK | Brake | brake |
| BRKG | Braking | Braking (see: negative acceleration ) |
| BRKR | Breaker | Breaker (fuse) |
| BRKRS | Breakers | Breakers (fuses) (plural) |
| BRKT | Bracket | |
| BRITE | Bright Radar Indicator Tower Equipment | |
| B-RNAV; BRNAV | Basic area navigation | Was introduced in European airspace from 1998; the aircraft must have a position accuracy of ± 5 NM in 95 percent of the flight time. "Basic" refers to: RNP 5 (Required Navigation Performance - 5 NM - required navigation performance) - P-RNAV is more precise - Precision Area Navigation - here the aircraft may have a maximum storage of ± 1 NM (1.85 km); B-RNAV = RNP 5 RNAV |
| BROUTER | Bridge router | ( Boeing 777 ) |
| BRP | Bombardier Recreational Products | One of its subsidiaries is Rotax (manufacturer of aircraft engines - for example Rotax 503 ) |
| BRP | Break release point | Point at which the brake is released |
| BRS | Ballistic Recovery System | The Cirrus Airframe Parachute ( total rescue system ) - for example Cirrus SR20 , Cirrus SR22 |
| GRT | Bright; Brightness | bright |
| BS | Broadcasting station; Commercial Broadcasting Station | Broadcasting station |
| BS | British Standard | |
| BSAX | Battlefield Surveillance Aircraft - Experimental | From DARPA to Northrop , allocated project |
| BSCU | Break system control unit | |
| BSCU | Braking and Steering Control Unit | also "Brake and Steering Control Unit" |
| BSCU | Brake system control unit | |
| BSFC | Brake Specific Fuel Consumption | Measure of the efficiency of an internal combustion engine; Power output per unit of fuel consumed; see also: Thrust Specific Fuel Consumption - TSFC |
| BSI | Borescope Inspection | Boroscopic examination |
| BTB | Bus tie breaker | Connects the AC bus to the tie bus (aircraft electronics) |
| BTBS | Bus tie breakers | (Plural of BTB) |
| BTC | Before Top Center | |
| BTDC | Before Top Dead Center | |
| BTL | Between layers | Between cloud layers (weather key for METAR and TAF ) |
| BTL | Bottle | Bottle, fire extinguisher (for example BTL A DISCH and BTL B DISCH lights - EXTINGUISHED) |
| BTMS | Brake Temperature Monitoring System | Monitoring system for the temperature of the brakes |
| BTMU | Brake Temperature Monitor Unit | |
| BTN | Between | between |
| BTU | British thermal unit | Unit of energy - based on pounds sterling and degrees Fahrenheit - heat energy required to heat a pound of water by 1 ° F (from 63 ° F to 64 ° F) |
| BTV | Break to vacate | (A380: braking mode that can be preset in the cockpit: the braking force is automatically dosed in such a way that the landing speed is reduced sufficiently until the previously defined junction from the runway to the taxiway [vacate = clearing the runway]. This saves unnecessarily heavy braking and thus reduces the load on the brakes) |
| BTWN | Between | between |
| BU | Back up | Reserve, replacement |
| BUFF | "Big Ugly Fat Fellow" | (Big, ugly, fat buddy), nickname for the Boeing B-52 -D, but there are also other versions such as Big Ugly Flying Fuck etc. Ä. used |
| BUL | bulletin | bulletin |
| BULK | Bulk baggage | bulky luggage |
| BUS | Business | business |
| BUS | electrical main line | |
| BVF | Federal Organization Against Airport and Aircraft Noise (Germany) | Federal Association against Aircraft Noise |
| BVR | Beyond Visual Range | Out of sight ( military aviation ) |
| BWB | Blended wing body | Flying wing |
| BYD | Beyond | beyond (for example CONDS CONTIG BYD 2100Z) |
| BYND | Beyond | beyond (for example CONDS CONTIG BYD 2100Z) |
| BZF; BZFI; BZFII | Radio Telephony License | Radiotelephony certificate with limited validity for the aeronautical radio service - radiotelephone certificate (aviation) |
| BZT | Federal Office for Approval in Telecommunications |
to the beginning of the letter - B
C.
(to the next letter - D) ... (to the beginning of the list)
( CA , CB , CC , CD , CE , CF , CG , CH , CI , CJ , CK , CL , CM , CN , CO , CP , CR , CS , CT , CU , CV , CW , CX , CY , CZ )
| C. | Charlie | Int. Spelling Alphabet ( ICAO Alphabet ) |
| C. | Center (RWY identification) | Center ( runway name for three parallel runways - middle runway ) |
| C. | center | Air traffic control that is responsible for the entire airspace of an FIR that is not controlled by approach control (APP) or the tower (TWR). |
| C. | Class-C airspace | Class C airspace (see: Airspace structure ) |
| C. | Centigrade; Degrees Celsius | centigrade |
| C. | Cargo (aircraft) | Cargo plane (e.g. Lockheed C-5 , C-130 , Boeing C-135 ) |
| C. | Category C Aircraft | In the landing configuration, the approach speed (1.3 x V S ) is 121 - 140 kt |
| C. | Circling | circle; z. B. Circling Approach |
| C. | Cold | cold |
| C. | Crossing (Chart Designator) | cross |
| C. | Concrete | concrete |
| C. | Air traffic control | Air traffic control post |
| C. | Business Class (IATA) | Business class ( booking class ) |
| C. | Children | Children - e.g. B. PAX (A / C / I) |
| C. | CHARLY - Clear | GAFOR weather code for: visibility more than 10 km, main cloud base over 5000 ft |
| C. | Convertible | E.g. Boeing 737-700C - the aircraft can be converted from a passenger aircraft to a cargo aircraft (or vice versa) in less than an hour |
| C. | Business Class normal tariff (Lufthansa and Star Alliance booking code ) - see: Booking class | |
| C. | Captain | Captain (see: pilot ) |
| CA | Captain | Captain (see: pilot ) |
| CA | Cabin attendant | Cabin crew; Flight attendant ; Stewardess |
| CA | Conflict Alert | |
| CA | Capability | |
| CA | Critical Altitude | |
| CA | Commercial Aviation | Airlines such as B. Air Berlin, Lufthansa etc. |
| C a | Lift coefficient ( polar ) (also known as C L - L for lift) | |
| CAA | (British) Civil Aviation Authority | British Civil Aviation Authority ; also other countries, e.g. B. CAA South Africa |
| CAA | Civil Aeronautics Administration | Civil Aeronautics Authority (USA; 1938 with the Civil Aeronautics Act the Civil Aeronautics Authority was founded, in 1940 it was transformed into the Civil Aeronautics Administration (CAA) and into the Civil Aeronautics Board (CAB). The CAA was established together with the Airways Modernization Board (AMB) in 1958 converted to the Federal Aviation Administration ) |
| CAA | Civil Aeronautics Administration | Civil Aviation Authority (Taiwan) |
| CAA / YES | Civil Aviation Authority / Joint Aviation Authorities | |
| CAAC | Civil Aviation Administration of China (website) | Chinese Aviation Authority |
| CAAP | Civil Aviation Advisory Publication | |
| CAAS | Class A airspace | |
| CAAS | Civil Aviation Authority of Singapore | |
| CAASC | Center for Advanced Aviation System Development | (UNITED STATES) |
| CAB | Cabin | Cabin (e.g. CAB ALT - cabin height) |
| CAB | Federal Civil Aeronautics Board | see: Airline Deregulation Act |
| CAC | Canadian Airports Council | |
| CAC | Close Air Combat | Close dogfight |
| CACC | Combat Air Command and Control | |
| CACP | Cabin area control panel | |
| CACTCS | Cabin Air Conditioning and Temperature Control System | ( Boeing ) |
| CADC | Central Air Data Computer | ( Boeing 747-400 ) central air data computer |
| CADC | Central (Digital) Air Data Computer | ( McDonnell Douglas MD-80 ) converts airspeed, altitude and temperature into digital outputs - for a wide variety of aircraft systems |
| CADIZ | Canadian Air Defense Identification Zone | Canadian Air Defense Zone |
| CAF | Combat Air Forces | Air National Guard - ANG |
| CAFE Foundation | Comparative Aircraft Flight Efficiency Foundation | Society for the Promotion of the Economy of Private Aircraft |
| CAG | Commander of the Air Wing (formerly Commander of the Air Group) | |
| CAIR | Confidential Aviation Incident Reporting | (Australia) |
| CAL | Code Allocation List | Air traffic control code allocation list for the transponder codes |
| CAM | Civil Aviation Manuals | |
| CAM | Civil Aviation Medicine Division | Aviation Medical Service (Canada) |
| CAM | Commercial Aviation Management | |
| CAM | Certified Aviation Manager | Certified aviation manager |
| CAM | Center d'Aviation Météorologique | |
| CAM | Columbia Aircraft Manufacturing | Aircraft manufacturer - formerly The Lancair Company - e.g. B. Columbia 400 |
| CAME | Transport Canada Aviation Medical Examiner | (Canada) |
| CAMI | Civil Aero Medical Institute (Oklahoma City) | Supreme Civil Aviation Medical Authority in the United States |
| CAMO | Continuing Airworthiness Management Organization | Continuing Airworthiness Management Company |
| CANC | Cancel | delete, delete, revoke |
| CANPA | Constant Angle Non Precision Approach | (Synonym for: Constant Descent Approach Procedure) |
| CANSO | Civil Air Navigation Services Organization | International organization that advocates the affairs of air navigation service providers |
| CANX | Canceled Passenger | Canceled passenger |
| CAO | Cargo Aircraft Only (Cargo Code) | Air cargo transport only |
| CAO | Civil Aviation Order | Civil Aviation Safety Authority (CASA) order |
| CAOC | Combined Air Operations Center | The air force command post for planning, coordinating and monitoring air operations |
| CAP | Combat Air Patrol | Air combat patrol |
| CAP | Civil Air Patrol | Civil air surveillance (USA) (semi-state aviation organization) |
| CAP | Capacity | Capacity (of the aircraft) |
| CAP | Capture | capture (e.g. instrument landing system ) - first the ILS course is “captured”, then the glide path; (e.g. capturing altitude - Altitude Capture - after a climb or descent ) |
| CAP | Civil Air Patrol | Civil Air Patrol (USA) |
| CAP | Controller access parameters | |
| CAPPS | Computer Assisted Passenger Prescreening System | in the USA Watch List for unwanted persons - u. a. among air passengers - to be identified - a compilation of the names of persons who are not citizens of the USA and are undesirable there |
| CAPS | Cirrus Aircraft Parachute System | The Cirrus Airframe Parachute ( total rescue system ) - e.g. B. Cirrus SR20 , Cirrus SR22 |
| CAPT | Captain | Captain ( pilot ) |
| CAR | Caribbean | Caribbean (ICAO Region) |
| CAR | Civil Aviation Requirements | |
| CAR | Civil Aviation Regulations | Forerunner of the Federal Aviation Regulations (FAR) |
| CAR | Civil Aviation Registry (USA) | |
| CAR | Cargo | Cargo |
| CARB | Carburator | Carburetor |
| CARF | Central Altitude Reservation Function | |
| CARS | Contingency Airborne Reconnaissance System | |
| CAS | Crew Alerting System | Occupation alarm system |
| CAS | Calibrated Air Speed | Corrected airspeed , calibrated airspeed (about the mechanical error - instrument error - and errors caused by the flow conditions in the vicinity of the dynamic pressure; corrected Indicated Air Speed - IAS - the correction values can be found in the flight manual); CAS = Equivalent Airspeed (EAS) only at sea level |
| CAS | Collision Avoidance System | |
| CAS | Close Air Support | Close air support |
| CAS | Controlled Airspace (UK) | |
| CASA | Construcciones Aeronáuticas SA | Spanish aircraft manufacturer |
| CASA | Civil Aviation Safety Authority | (Australia) |
| CASA | Computer Assisted Slot Allocation | |
| CASB | Canadian Aviation Safety Board | |
| CASJ | Canadian Aeronautics and Space Journal | |
| CAT | Category | Aircraft category (by type and weight); Operating stage |
| CAT | Category | Aircraft category according to approach speed in landing configuration (1.3 x V s ): A to D |
| CAT | Clear Air Turbulence | Turbulence in cloud-free air (weather key for METAR and TAF ) |
| CAT | Commercial Air Transport | commercial air traffic (i.e. with Air Operator Certificate (AOC) ) |
| CAT | ILS Category 1 to 3 | Operating level according to ICAO Annex 10; All-weather flight operating levels (see instrument landing system ) |
| CAT I | 800 m meteorological visibility, greater than 60 m decision height (DH 200 ft), at least 550 m runway visibility (RVR) | |
| CAT II | 400 m meteorological visibility, 30 m to 60 m decision height (DH 100–200 ft), at least 300 m runway visibility (RVR) | |
| CAT IIIA | 200 m meteorological visibility, 15 m to 30 m decision height , (DH 50-100 ft), at least 200 m runway visibility (RVR) | |
| CAT IIIB | Less than 15 m decision height , (0 ft to <50 ft), less than 200 m - at least 75 m runway visibility (RVR) | |
| CAT IIIC | no minima; (DH none), 0 m runway visibility (RVR); currently not possible at any airport | |
| CATCA | Canadian Air Traffic Control Association | Association of Canadian Air Traffic Controllers |
| CATMAC | Cooperative Air Traffic Management Concept | |
| CATOBAR | Catapult Assisted Take Off But Arrested Recovery | Catapult-assisted take-off (aircraft carrier) |
| CATS | Computer Assisted Testing Service | (e.g. FAA CATS test for pilot theory test) |
| CAVOK | Clouds and Visibility OK | Clouds and visibility OK |
| CAVU | Ceiling and Visibility Unlimited | Free, unlimited view (ideal flying weather) |
| CAWS | Central Aural Warning System | Warns of fire in the engine or auxiliary engine , speeding, altitude alarm, stall or incorrect configuration |
| CB; C / B | Circuit breaker | Fuse |
| CB | Cumulonimbus | Storm cloud (weather key for METAR and TAF ) (also known as "Charlie Bravo" among glider pilots and private pilots) |
| CBA | Commercial and Business Aviation | Business aviation |
| CBA | Cross-border area | |
| CBAA | Canadian Business Aircraft Association | |
| CBAS | Class B airspace | |
| CBBG | Cabin baggage | Hand luggage (IATA: max. 8 kg, 55 × 40 × 22 cm) |
| CBIT | Class B airspace | Continuous built in test |
| CBMS | Circuit Breaker Monitoring System | Shear monitoring system |
| CBP | Customs and Border Protection | Customs and Border Protection |
| CBS | Circuit breakers | Fuses (plural) |
| CBT | Cargo Bay Fuel Tank | Hold tank |
| CC | Compass Course | Compass course - KK (also as CT - Compass Track - commonly used) - Course in relation to Kompass-Nord (i.e. including variation and deviation ) |
| CC | Collect Charge (Cargo Code) | Recipient pays the freight (carriage fee ) |
| CC | Cirrocumulus | Cirrocumulus clouds - cumulus clouds at high altitudes (weather key for METAR and TAF ) |
| CC | Cubic centimeters | Cubic centimeter - cm³ (also: ccm) 1 cm³ = 1 ml |
| CC | Counter clockwise | Counterclockwise, counterclockwise ( direction of rotation ) |
| CCA | Corrected | Correction - Correction is actually indicated with COR, CCA is the 1st change, CCB the 2nd change (weather code for METAR and TAF ) |
| CCA | Central Control Actuator | ( Boeing ) |
| CCAS | Class C airspace | |
| CCB | Corrected | Correction - Correction is actually indicated with COR, CCA is the 1st change, CCB the 2nd change (weather code for METAR and TAF ) |
| CCC | Crew coordination concept | Organization of crew coordination |
| CCD | Cursor control device | ( Boeing ) |
| CCFP | Collaborative Convective Forecast Product | (USA; weather map) |
| CCITT | Comité Consultatif International Téléphonique et Télégraphique | Technical Committee of the International Telecommunication Union - ITU |
| CCM | Cubic centimeters | Cubic centimeter - cm³ (also: CC) 1 cm³ = 1 ml |
| CCP | Communications control panel | |
| CCQ | Cross crew qualification | |
| CCS | Cabin Configuration System | ( Boeing ) |
| CCT | Coordinated crew training | Joint training and further education of the on-board crew |
| CCTM | Cabin Configuration / Test Module | ( Boeing ) |
| CCV | Control Configured Vehicle, Control-Configured Vehicle |
Artificially stabilized aircraft |
| CCW | Counter clockwise | Counterclockwise, counterclockwise ( direction of rotation ) |
| CD | Clearance delivery | Release |
| CD | Candela | Candela (basic unit of luminous intensity) |
| C D | Coefficient of drag | Resistance coefficient (see: drag coefficient ) as C X or C W denotes |
| CDA | Continuous Descent Approach | Approach with continuous descent (without intermediate sections with level flight, in which the thrust has to be increased again; major planning problems for air traffic control, but the wish of every pilot) |
| CDAP | Constant Descent Approach Procedure; Continuous Descent Approach; Constant-Angle Non-Precision Approach |
Non-precision approach with constant glide angle |
| CDAS | Class D airspace | |
| CDC | Chef de Cabin | Chief steward / chief stewardess, purser |
| CDCCL | Critical Design Configuration Control Limitations | |
| CDFA | Continuous Descent Final Approach | Landing approach with continuous rate of descent |
| CDG | Configuration Database Generator | ( Boeing ) |
| CDI | Course Deviation Indicator | Course deviation indicator on the VOR receiver ( rotary radio beacon ); Course deviation display during VOR approach or ILS approach |
| CDL | Configuration Deviation List | z. B. MEL / CDL - sometimes an aircraft is allowed to take off despite defective parts (which parts must still function at take-off is specified in the aircraft's Minimum Equipment List - MEL -), as large complex aircraft (with several million parts ) it is practically inevitable that technology (devices, systems or screws) will fail; Whether the coffee maker is defective in 1st class is irrelevant for the safe conduct of the flight; After a transatlantic flight of a B747 , the service technician prints out the list of defects on the aircraft (often 50-100 points) - but these are minor faults in redundant systems and control systems of the control systems that are not displayed to the pilot in the cockpit (because he doesn't need them for his flight - they would only be distracting); In the case of larger technical defects, according to MEL, there may be operational restrictions (e.g. do not fly above or below a certain temperature, longer minimum runway length, repair in 7 days at the latest, etc.) |
| CDM | Collaborative Decision Making | |
| CDO | Clearance Delivery Officer | |
| CDO | Continuous Descent Operations | Synonym for CDA Continuous Descent Approach, s. O. |
| CDP | Compressor Discharge Pressure | (Engine) |
| CDR | Commander | commander |
| CDR | Conditional route | |
| CDR | Coded Departure Route | |
| CDS | Common Display System | Computer-generated display of the flight instruments ( B737 NG) - better known under the name “Flight Instruments System” - the 6 screens (EFIS / MAP [electronic flight instruments system with map] - as in the classic B737-300 / -400 / -500 ; PFD / ND [primary flight display / navigational display] - as in the B747 and B777 ) in the cockpit for instrument and system display ; the Common Display System consists of 6 LC flat screens (LC Display Unit - DU) in the cockpit and two Display Electronic Units (DEU); Usually one DEU is displayed on 3 DUs, but the output which DEU shows what on which DU can be freely configured (manual display switching); the classic display on the screen is chosen by airlines that fly the classic B737-300 / -400 / -500 at the same time in order to reduce the training effort (transition training) for the newer B737 NG ( Boeing 737 -700 / -800 / -900 ) to minimize; this concept of the screen display is called by Boeing " Virtual Flight Deck " [1] ; the airlines (operators) had made it clear before the introduction of the B737 NG that they did not want to accept any changes for the type rating ; So Boeing had to offer the cockpit of the heavily modified B737 NG (new digital systems, including 22 new parts) also in the "old guise" for its old customers - the CDS of the B7373 NG offers two "looks" (see further information under: DEU ) |
| CDSA | Class D surface area | |
| CDT | Central Daylight Time | |
| CDT | Compressor Discharge Temp | Temperature of the charge air at the outlet of the turbocharger and in front of a charge air cooler |
| CDTI | Cockpit Display of Traffic Information | Cockpit display of traffic information (see: Automatic Dependent Surveillance ); shows the traffic in a radius of about 80 NM; traffic information from TCAS, TIS-B and ADS-B is usually displayed together |
| CDU | Control and Display Unit | Control and display part (of the autopilot ); FMC display (screen), the interface (interface) of the pilot to the flight management system - FMS; Control / display unit in the Omega navigation method |
| CEAC | Committee for European Airspace Coordination | |
| CEAS | Class E airspace | |
| CEB | Commercial Engine Bulletin | |
| CEC | Center Equipment Center | |
| CFD | Computational Fluid Dynamics | |
| CEIL | Ceiling | Main cloud base (coverage over 3/8) (weather key for METAR and TAF ) |
| CENOR | Central and Northern Region | Association of Belgium, Denmark, Germany, the Netherlands, Norway and the Czech Republic for the creation of on-board documents for instruments approach and departure procedures (military) |
| CENOR FLIP | Central and Northern Region Flight Information Publication | |
| CENRAP | Center Radar ARTS Presentation / Processing | (ARTS - Automated Rada Terminal System) |
| CENTAF | US Central Command Air Forces | Subordinated to the United States Central Command (CENTCOM) |
| CEP | Central East Pacific | |
| CEP | Circular Error Probability | |
| CERAP | Combined Center / Radar Approach Control | |
| CEST | Central European Summertime | Central European Summer Time - CEST |
| CET | Central European Time | Central European Time CET |
| CEU-W | Central Executive Unit West | |
| CF | Change Frequency to ... | Change frequency after ... |
| CFC | Carbon fiber composite | Carbon fiber reinforced carbon, a composite material consisting of a C-fiber matrix that is padded with carbon |
| CFD | Computational Fluid Dynamics | Numerical fluid mechanics |
| CFDIU | Centralized Fault Display Interface Unit | |
| CFDS | Centralized Fault Display System | |
| CFE | Customer Furnished Equipment | |
| CFI | Certified Flight Instructor | Licensed flight instructor |
| CFII | Certified Flight Instructor - Instrument | Licensed flight instructor - for instrument flight |
| CFIT | Controlled flight into terrain | Controlled flight into the ground (controlled flight into an obstacle) |
| CFM | Confirm; I confirm | Confirm, I confirm |
| CFM | CFM International | Engine manufacturer - produces the CFM56 engine |
| CFM | Cubic feet per minute | Cubic Feet Per Minute (measure of volume flow) - Inlet CFM (ICFM) or Actual CFM (ACFM); Standard Cubic Feet per Minute (SCFM) |
| CFMS | Central Flow Management System | Traffic flow control system from EUROCONTROL |
| CFMU | Central Flow Management Unit | Flight movement coordination of the ECAC in Brussels - founded in Maastricht in 1989 |
| CFO | Chief of Flight Operations | |
| CFP | Computerized Flight Plan, Computed Flight Plan, Computer Flight Plan |
Computer-calculated flight plan |
| CFP | Company Flight Plan | The airline's flight plan |
| CFPD | Command Flight Path Display | Optical representation of the flight path; is projected onto the windscreen of new aircraft; Projection display for the approach glide path (see: Head-Up-Display ) |
| CFR | Code of Federal Regulations | U.S. Aviation Regulations |
| CFR | Contact Flight Rules | |
| CFR | Critical Fuel Required | Amount of fuel required to reach the nearest airport during an ETOPS diversion |
| CFR | Airport Crach Fire Fighting and Rescue | Airport fire and rescue service |
| CFRP | Carbon Fiber Reinforced Plastics | |
| CFS | Critical Fuel Shortfall | Too little residual fuel at the critical point in ETOPS planning, extra fuel on an ETOPS flight to reach an alternate airport in the event of a diversion |
| CFT | Conformal fuel tank | a kind of additional tank (not a drop tank ) (for military machines), which hugs the fuselage and thus hardly increases the air resistance - but they cannot be dropped, they can only be attached and removed on the ground; but they do not increase the radar cross-section of the aircraft. |
| CFT | Cockpit Familiarization Trainer | |
| CG | Center of Gravity | main emphasis |
| CG | Coast Guard Air Station | Coast Guard Air Station |
| CG | Climb gradient | Climb gradient (the ratio of the altitude covered to the horizontal flight distance in a certain time unit - expressed in percent) |
| CGAS | Class G airspace | |
| CGIVS | Computer Generated Image Visual System | An outside vision system in a flight simulator; Since the mid-1970s, a start has been made to implement computer-based external vision systems |
| CGL | Circling guidance lights | Guide lights to circling |
| CGO | Cargo | freight |
| CH | Compass heading | Compass heading, displayed compass heading, heading in relation to compass north (incl. Variation and deviation); Compass direction |
| CH | Channel | Channel (radio; Nav device) |
| CH | Critical Height | Critical height |
| CH | Carburator Heat | Carburetor preheating |
| CH | Chain Home | Part of the Dowding System (British radar air defense in World War II) |
| CHAN | Channel | Channel (radio; Nav device) |
| CHAPI | Chase Helicopter Approach Path Indicator | |
| CHAYKA | Russian terrestrial radio navigation system | Russian radio navigation system, works similar to LORAN-C (no abbreviation) |
| CHD | Child | Child (3rd to 12th year of age) |
| CHDO | Carrier Certificate-Holding District Offices | District office for licensed airlines |
| CHG | Change; Changes; Modification Message | Change, change notification; Aircraft change |
| CHGR | Charger | |
| CHIRP | Confidential Human Factor Incident Reporting Program | (Great Britain) |
| CHK | check | check, check |
| CHL | Chain Home Low | Part of the Dowding System (British radar air defense in World War II) |
| CHML | Childs Meal (Catering Code) | Children's meal - see: airplane meal |
| CHPL | Commercial Helicopter Pilot License | Commercial pilot license (helicopter); Professional helicopter driver license |
| CHR | Chronograph | Clock with stop function |
| CHRC | Criminal History Records Check | ( Flight safety ) |
| CHRGR | Charger | |
| CHRT | Chart | Map (map) |
| CHT | Cylinder Head Temperature | Cylinder head temperature |
| CI | Cost Index | Cost index |
| CI | Cirrus | Cirrus clouds ; Spring clouds - a type of cloud at very high altitudes (weather key for METAR and TAF ) |
| CIC | Cabin interphone controller | ( Boeing ) |
| CIDIN | Common ICAO Data Interchange Network | |
| CID | Controlled Impact Demonstration | |
| CIDS | Cabin Intercommunication Data System | ( Airbus 380 ) |
| CIDS | Cabin Intercom Distribution System | |
| CIFP | Cancel IFR flight plan | |
| CIG | Ceiling | Main cloud base (USA) - otherwise CEIL - (coverage over 3/8) (weather code for METAR and TAF ) |
| CIGAR | A reminder for the pre-takeoff checklist in general aviation: 1. Controls (free rudder), 2. Instruments (check), 3. Gas (tank selector switch, mixture, fuel pump), 4. Attitude (trim to start position), 5. Run-up (magnetic check, check carburetor heating) | |
| CIH | Cabin Interphone Handset | ( Boeing ) |
| CIP | Russian registration | |
| CIP | Current icing potential | Aviation weather forecast - see: Aviation weather |
| CIRCL | Circling | circle, circle |
| CIS | Cabin Interphone System | ( Boeing ) |
| CIT | Compressor Inlet Temperature | Compressor inlet temperature ( engine ) |
| CIT | (City) Near Large Towns | In metropolitan areas (weather code for METAR and TAF ) |
| CIV | Civil | Civil |
| CJ | Corporate jetliner | Airbus A319 CJ - business jet based on the Airbus A319 |
| CK | Check | control |
| CKPT | cockpit | |
| CKT | Circuit | Cycle |
| CL; C / L | Center Line | Center line - on the runway (RWY CL) or on the taxiway (TWY CL) |
| CL | Center of Lift | Center of lift |
| CL | Class (Cargo Code) | Classification |
| CL | Coefficient of Lift | Lift coefficient ( polar ) (also referred to as C a ) |
| CL | Close | conclude |
| CL | Climb | Climb |
| CL | Compass locator | often located at the OM (outer marker) or MM (middle marker) |
| C / L | Check list | Checklist (aviation) |
| C L | Coefficient of Lift | Lift coefficient ( polar ) (also referred to as C a ) |
| C Lmax | maximum coefficient of lift | Maximum lift coefficient (see: Polare ) |
| C Lα | Lift Curve Slope | Slope of the curve for the lift coefficient (see: Polars ) |
| CLA | Clearance Acknowledgment Downlink Message | |
| CLA | Clear Type of Ice Formation | |
| CLA / GPI | Centerline of Amplification and Glide Path Intercept (Reflector) | |
| CLB | Climb | rise, climb |
| CLBR | Calibration | calibration |
| CLC | Course Line Computer | |
| CLCP | Central Lateral Control Package | Control unit on the B-747 - controls the ailerons |
| CLD | Clouds | Clouds (weather key for METAR and TAF ) |
| CLG | Ceiling | Main cloud base - also CEIL - (coverage over 3/8) (weather code for METAR and TAF ) |
| CLG | Calling | |
| CLNC | Clearance | release |
| CLNC DEL | Clearance delivery | Approval; Radio frequency for approval |
| CLNG | Cooling | cooling |
| CLO | Counter Low Observable | Directed against radar detection |
| CLR | Clear; Cleared; Clearance | Approved; released after; Release (example: taxi CLR); Clear |
| CLR | Clearance delivery | Approval takes place |
| CLR | Clearance delivery | Approval takes place |
| CLR | Clear | Delete (one button on the Control and Display Unit ) |
| CLRD | Cleared | Approved |
| CLRNC | Clearance | release |
| CLS | Class | class |
| CLS | Cabin Light System | ( Boeing ) |
| CLSD | Closed | Closed |
| CLT | Calculated Landing Time | Estimated landing time |
| CLX | Oceanic Clearance Uplink Message | |
| CM | Centimeter | centimeter |
| C m | Coefficient of Pitching Moment | |
| C m0 | Coefficient of Pitching Moment at Zero Lift | (Zero lift axis) |
| CM1 | Cockpit Member Number 1, Commander |
Flight captain |
| CM2 | Cockpit Member Number 2, co-pilot |
First Officer |
| CM3 | Cockpit Member Number 3 | Flight engineer |
| cm | climb and maintain | Climb and maintain altitude - ATC instructions from air traffic control |
| CMB | Climb | climb |
| CMC | Central Maintenance Computer | ( Boeing ) |
| CMCF | Central Maintenance Computer Function | ( Boeing ) |
| CMCS | Central Maintenance Computer System | ( Boeing 747 ) |
| CMD | Command | Command (e.g. lettering on the three on / off switches of the three autopilots - Boeing 747 ) |
| CMF | Component Maintenance Flight | (Military) |
| CMM | Component Maintenance Manuals | |
| CMNPS | Canadian Minimum Navigation Performance Specification | Minimum navigation equipment for the CMNPS airspace |
| CMO | Certificate Management Office | |
| CMP | Code management plan | Air traffic control code management plan for the transponder codes |
| CMPL | Completion, completed, complete | Termination, terminated, complete |
| CMPTR | computer | computer |
| CMR | Certification Maintenance Requirements | |
| CMR | Combat Mission Ready | |
| CMS | Clean maneuvering speed | |
| CMS | Cabin Management System | ( Boeing 747 , Boeing 777 ) |
| CMS | Central Maintenance System | ( Boeing 747 ) |
| CMSD | Commissioned | |
| CMU | Central Management Unit | ( Boeing ) |
| CN | Compass North | N direction indicated by the magnetic compass |
| C / N | Construction number | Construction number |
| C / N | COM / NAV | Radiotelephone / navigation device |
| CNDU | Control and Display Navigation Unit | |
| CNL | Cancel; Canceled | cancel; painted |
| CNL | Flight plan cancellation message; FPL cancellation | Flight plan cancellation report; Flight plan cancellation notification; Flight plan cancellation |
| CNS | Communications | |
| CNS | Communications, Navigation and Surveillance / Air Traffic Management | |
| CNS / ATM | Communications, Navigation and Surveillance / Air Traffic Management | (largely) free routing (according to FANS-1) |
| CNTR | center | (Flight control) center |
| CNTRLD | Controlled | controlled |
| CNTRLN | Centerline | Center line (of runway ) |
| CNX | Canceled | canceled, canceled |
| CO | Country | country |
| CO | county | Common; district |
| CO | Copilot | Copilot (see pilot ) |
| CO | Company | company |
| COAT | Corrected Outside Air temperature | Corrected outside temperature (OAT) - displayed outside temperature corrected according to the table, since this displayed value is too high for a jet in flight due to the heating caused by the compression of the incoming air |
| COB | Confirmed off block | |
| COC | Combat Operations Center | |
| C of A | Certificate of Airworthiness | Certificate of Airworthiness |
| COFP | Common Operational Flight Program | General flight control program |
| C of R | Certificate of Registration | |
| COG | Center of Gravity | main emphasis |
| COM | Communications | Radio receivers and transmitters, telecommunications |
| COMAT | Company material | In-house mail - is taken with the regular flights from the headquarters to the branches at the individual airports |
| COMIL | ATS Coordination Center for Military Airspace Utilization | |
| COML | Commercial | commercially |
| COMLO | Compass locator | |
| COMM | Communication | Communication (radio) |
| COMP | Compatibility Group (Cargo Code) | Compatibility group |
| COMP | Compressor | compressor |
| COMPLAN | Communications Planning | |
| COMPT | Compartment | Compartment, section |
| COMSEC | Communications Security | |
| COMSN | Commission | Commission |
| CON | Control | Control; Air traffic control department (e.g. approach control) |
| CON | Concrete | concrete |
| CON | Continuous | continued; ongoing |
| CONC | Concrete | concrete |
| CONC | Concerning | concerning |
| COND | Condition | Condition, condition; AIR COND = air conditioning |
| CONDS | Conditions | States (e.g. CONDS CONTIG BYD 2100Z) |
| CONFIG | Configuration | configuration |
| CONN | Connection | connection |
| CONS | Continuous | continuous (weather code for METAR and TAF ) |
| CONSOL ; CONSOLAN | Radio navigation system (LW) | |
| CONST | Construction; Constructed | Construction, being built, under construction |
| CONT | Control | control |
| CONT | Contingency Fuel | Reserve fuel |
| CONT | Continuous; Continue; Continued | Continue; continued; ongoing (e.g. MAX CONT TRUST) |
| CONTIG | Continuing | continued (e.g. CONDS CONTIG BYD 2100Z) |
| CONUS | Continental USA, Contiguous USA |
|
| CONVL | Conventional | usually |
| COOR | Coordinates | Coordinates, position data |
| COORD | Coordinates | Coordinates, position data |
| COP | Change over point | Point above which the frequency must be changed between two radio navigation systems; Changeover point (for radio beacons) - the frequency change usually takes place halfway between two radio navigation systems; the change over point is only noted separately on cards if it is not exactly in the middle; After the change over point, directional guidance is provided by the radio navigation system ahead |
| COP | Combat Operating Procedures | |
| COPTER | Helicopter | helicopter |
| COR | Correct; Corrected; Correction | Correct, corrected, corrected |
| CORR | Correction | correction |
| CORR | Corridor | corridor |
| COSA | Coordinating and Scheduling Agency | |
| COSPAS-SARSAT | Russian Search and Rescue Satellite Aided Tracking System |
International, satellite-based search and rescue system (Russia, Canada, France, USA ...) for the detection and localization of emergency beacons (EPIRBS) that are activated on ships, in aircraft, from land vehicles and / or by individuals (COSPAS = Russian: Kosmitscheskaja Sistema Poiska Avarinich Sudow - cosmic system for searching for damaged means of transport [ships]; also: Международная спутниковая система поиска и спасания - international satellite-based search and rescue system - SARSAT) |
| CO RTE | Company route | |
| COT | at the Coast | In the coastal area (weather key for METAR and TAF ) |
| COTS | Commercial off-the-shelf | Conventional components, assemblies, spare parts |
| COV | Cover, covered, covering | Ceiling, covered, covering (weather key for METAR and TAF ) |
| CP | Control panel | Control panel |
| CP | Command Post | Command center |
| CP | Critical point | Critical point |
| CP | Center of Pressure | Pressure point (point at which the sum of all pressure forces creates a force or a moment) |
| CPA | Closest point of approach | Point of closest approximation, term from TCAS |
| CPC | Cessna Pilot Center | Flight school licensed by Cessna |
| CPC | Cabin Pressure Controller | see: pressurized cabin , air conditioning (aircraft) |
| CPCS | Cabin Pressure Control System | see: pressurized cabin , air conditioning (aircraft) |
| CPDLC | Controller pilot data link communication | Written data connection between air traffic controllers and pilots (reduces communication problems and communication errors in air traffic), see also VHF data radio and Aeronautical Telecommunications Network |
| CPI | Crew Performance Indicator | |
| CPL | Commercial pilot license | Commercial pilot license; Professional pilot license |
| CPL | Current Flight Plan Message | Message regarding the current flight plan |
| CPL | Cabin Preparation List | Checklist for the cabin crew to prepare passengers for an emergency landing or ditching (assuming sufficient time) |
| CPLD | Coupled | connected, coupled - e.g. B. NAV CPLD is a mode on the autopilot |
| CPM | Container / Pallet Distrib. Msg. | Information about containers on board and their loading position |
| CPR | Compressor Pressure Ratio | (Engine) |
| CPT | Cockpit procedure trainer; Cockpit Procedure Training |
Cockpit procedural trainer; Cockpit procedure training (see: Flight simulation ) |
| CPT | Calculated Parking Time | |
| CPT | Captain | Captain (see: pilot ) |
| CPT | Clearance - Pre-Taxi Procedure | Clearance (e.g. take-off clearance, landing clearance, overflight permit) - see: Air traffic control |
| CPTR | Copter; Helicopter | helicopter |
| CR | Change request | Change request |
| CR | Class rating | Class eligibility |
| CR | Creek | Brook |
| CR | Cruise | Cruise flight, level flight |
| CR | Crashed | crashed, had an accident |
| C / R | Crew rest area | Rest area for the crew - separate temperature control for the air conditioning (aircraft) |
| CRA | Crew rest area | Crew rest area |
| CRAD | Canadian Radar | |
| CRAF | Civil Reserve Air Fleet | |
| CRAM | Conditional Route Availability Message | |
| CRC | Crew rest compartment | Crew rest compartment |
| CRes | Corrosion Resistant | |
| CRF | Crew rest facilities | (Usually as a relaxation area for pilots and flight attendants on the plane bunk referred; bunk bed = loft bed or bunk bed) |
| CRG | Cargo | Air freight |
| CRI | Class Rating Instructor | |
| CRI | Certification Review Item | EASA approval regulation |
| CRJ | Bombardier Canadair Regional Jet | |
| CRM |
Crew resource management ; Cockpit Resource Management |
effective work as a crew |
| CRM / K | Crew Resource Management for Cabin Crew | |
| CROD | Constant rate of descent | (Synonym for: Constant Descent Approach Procedure) |
| CRP | Compulsory Reporting Point | Mandatory reporting point (see: control zone ) |
| CRP | Carbon Reinforced Plastic | |
| CRPA | Controlled Reception Pattern Antenna | |
| CRS | Course | Course ; Flight course |
| CRS | Certificate of Release to Service | Airworthiness certificate after maintenance work |
| CRS | Certified Repair Station (FAA) | Certified shipyard (FAA) |
| CRS | Check-in reservation | Seat reservation when checking in |
| CRS | Computer reservation system | Computer ticket issuance |
| CRT | Cathode Ray Tube | Cathode ray tube (display type) |
| CRTSY | Courtesy | Kindness (e.g. courtesy car - free car rental or free overnight stay - for private pilots at remote airports in the USA - so that the customer comes back) |
| CRW | Canard rotor wing | Duck-style rotor aircraft |
| CRZ | Cruise | Cruise flight, level flight |
| CS; C / S | Call sign | Callsign |
| CS | Certification Specifications | Certification specifications (aviation regulations and certification provisions of the European Aviation Authority EASA ; CS replace JAR regulations for new registrations (example: CS-25 replaces JAR-25); European aviation guidelines; European aviation requirements ) |
| CS | Cirrostratus | Cirrostratus clouds (weather key for METAR and TAF ) |
| CS | Control switch | Control switch |
| C / S | Color scheme | |
| CSAR | Combat Search and Rescue | Military air rescue in combat |
| CSCU | Cargo Smoke Control Unit | |
| CSD | Constant Speed Drive | Each engine has an alternating current generator (AC); the Constant Speed Drive Unit (or a similar device - VSCF - Variable Speed Constant Frequency; IDG - Integrated Drive Generator) establishes the connection between the engine and the generator; this drive unit has its own oil system (independent of the engine oil system) for cooling and lubrication; (eg "illumination of the number two generator CSD low oil pressure warning light" then the pilot has to disconnect the generator CSD from the engine - it cannot be "re-engaged" in flight - similar to a coupling with a predetermined breaking point); Since the engine is operated at different speeds (power settings) (take-off, climb, cruise, descent, landing) the CSD is required as a gearbox to drive the generator at a constant speed |
| CSDS | Cargo Smoke Detector System | ( Boeing 777 ) |
| CSEU | Control System Electronics Unit | ( Boeing 747 ) |
| CSFF | Cold soaked fuel frost; Upper Wing Surface Non-environmental icing |
Icing on the upper side of the wing from cold fuel (visible after landing or when sinking into warmer and more humid air masses) |
| CSI | Critical Safety Item | |
| CSLV | Cycles Since Last Shop Visit | Work cycles since the last visit to the workshop (e.g. engine) |
| CSM | Cartographic Specification Manual | |
| CSM | Cabin System Module | ( Boeing ) |
| CSM | Chopped Strand Mat | Glass fiber mat (for glass fiber reinforced plastic ) |
| CSM / G | Constant speed motor / generator | see: Ram Air Turbine |
| CSMU | Cabin System Management Unit or Crash-Survivable Memory Unit | ( Boeing )
see: Flight recorder Crash-Survivable Memory Unit |
| CSN | Cycles Since New | Operating cycles run through since the new condition (e.g. for engines - start-up-run-shutdown) |
| CSO | Cycles Since Overhaul | Total operating time since maintenance (e.g. for engines) |
| CSS | Cabin Service Supervisor | Purser; Cabin chief |
| CST | Central Standard Time | (OFF) UTC + 9.5 hours ( time zone ) |
| CsT | Centi- Stokes | Viscosity index |
| CS / T | Combines station / tower | |
| CSTMS | Customs | inch |
| CSTR | Constraint | Restriction, compulsion |
| CSU | Constant speed unit | Control unit for the constant speed propeller ( variable pitch propeller ) - compensates for changes in speed by changing the angle of attack of the propeller blades |
| CSV | Comma Separated Value | File format for the evaluation of aircraft accidents using a block box ( flight recorder ) - the data read out is processed in CSV format at the NTSB, for example. |
| CT | Control tower | Control tower |
| CT | Compass track | Compass Course (also called CC - Compass Course - commonly used) |
| CTA | Control Area | Control zone; Control district |
| CTA | Calculated Time Of Arrival | Estimated time of arrival |
| CTA | Controlled Time Of Arrival | |
| CTAF | Common Traffic Advisory Frequency | (Unusual German translation: general flight information frequency) |
| CTAI | Cowl Thermal Ani-Ice | ( Aircraft de-icing ) |
| CTALT | Controlled Altitude | |
| CTAM | Climb to and maintain | rise and maintain |
| CTAS | Center TRACON Automation System | |
| CTC | Contact | call; connect to ... |
| CTC | Cabin temperature controller | ( Boeing ) |
| CTCSS | Continuous Tone Coded Subaudio Squelch | Selective call system |
| CTGY | Category | category |
| CTL | Control | Control, supervision |
| CTL PNL | Control panel | Control panel |
| CTN | Caution | Attention; warning |
| CTOL | Collision during take-off or landing | Collision with obstacles during take-off and landing |
| CTOL | Conventional Take-Off and Landing | Conventional takeoff and landing |
| CTOT | Calculated Take Off Time | Calculated departure time; Departure time slot (slot) maximum minus 5 minutes to plus 10 minutes deviation |
| CTOT | Constant Torque On Take-off | |
| CTR | center | Air traffic control that is responsible for the entire airspace of an FIR that is not controlled by approach control (APP) or the tower (TWR). |
| CTR | center | center (e.g. CDU - step-by-step display of the saved flight plan in MAp mode on the navigation display) |
| CTR | Control Area | Control zone (air traffic control) -controlled airspace is used to protect IFR traffic at airports ( airspace structure ) |
| CTRD | Certified Tower Radar Display | |
| CTRL | Control | Control, regulation |
| CTU | Cabin Telecommunication Unit | ( Boeing 737 -700, -800, -900, Boeing 757 ) |
| CTVS | Cockpit Television Sensor | ( General Dynamics F-16 ) |
| CU | Control unit | Control unit |
| CU | Cumulus | Cumulus clouds - cumulus clouds (weather key for METAR and TAF ) |
| CUF | Cumuliform | Cumulus cloud-like - like cumulus clouds (weather key for METAR and TAF ) |
| CUST | Customs | inch |
| CV | Control Valve, Shutoff Valve | Control valve, shut-off valve |
| CV | Diversion (Cargo Code) | detour |
| CVFDR | Combined Voice and Flight Data Recorder | Flight recorder |
| CVFP | Charted Visual Flight Procedure | (USA) Map view of a visual approach procedure - for each specific runway; at some airfields with a control tower, due to special features of the environment, for noise protection reasons, for safety reasons or to increase the effectiveness of air traffic control; CVFP was developed primarily for turboprop aircraft; represents outstanding landscape features, course and recommended heights |
| CVFR | Controlled Visual Flight Rules | Controlled visual flight |
| CVR | Cockpit voice recorder | Voice recorder (black box) |
| CVSM | Conventional Vertical Separation Minimum | |
| CW; C / W | Continuous wave | unmodulated signal; undamped wave; Continuous tone - at the NDB signal |
| CW | Carrier Wave | Carrier wave |
| CW | Clockwise | Clockwise ( direction of rotation ) |
| CW | Complied With | |
| CW | Continuous wave | unmodulated wave |
| C&W | Caution and Warning | |
| C W | Coefficient of drag | Drag ( drag coefficient ) - also known as C D , or C X denotes |
| CWA | Center Weather Advisory | |
| CWS | Control wheel steering | Control mode of the autopilot (a sub-mode of the autopilot), where the pilot determines direction and altitude via the stick force |
| CWS P | Control wheel steering (pitch) | Control mode of the autopilot (pitch mode), whereby the pilot determines the altitude via the stick force |
| CWS R | Control Wheel Steering (Roll) | Control mode of the autopilot (roll mode), with the pilot using the stick force to determine the direction |
| CWT | Central Wing Tank | Central wing tank (fuel) |
| CWY | Clearway | Open space |
| C X | Coefficient of drag | Drag ( drag coefficient ) - also known as C D or C W denotes |
| CXX | Cancellation | Cancellation of the flight |
| CY | Company | company |
| CY | Calendar Year | Calendar year |
| CYN | Canyon | Gorge-like incised valley or rift system |
| CZ | Caution zone | Danger zone |
| CZ | Control Zone | Control zone |
| CZI | Core Zone Inspection | (Engine) |
to the beginning of the letter - C
D.
(to the next letter - E) ... (to the beginning of the list)
( DA , DB , DC , DD , DE , DF , DG , DH , DI , DK , DL , DM , DN , DO , DP , DR , DS , DT , DU , DV , DW , DZ )
| D. | delta | Int. Spelling Alphabet ( ICAO Alphabet ) |
| D. | Danger area (followed by identification) | Hazardous area (followed by a more detailed description) |
| D. | Class-D airspace | Class D airspace ( airspace structure ) |
| D. | Distance | Distance (e.g. D10 = distance 10 NM) |
| D. | Day | Day |
| D. | Category D Aircraft | In the landing configuration the approach speed (1.3 x V S ) is 141 - 165 kt |
| D. | Delta - Difficult | GAFOR weather code for: ground visibility more than 5 km (and / or) main cloud base above 1000 ft |
| D. | Business Class special tariff (Lufthansa and Star Alliance booking code ) - see: Booking class | |
| D. | Decreasing | Decreasing - only as an addition after the runway visibility range - RVR - Runway Visual Range |
| D. | Drag | Resistance, air resistance |
| D 0 | Zero lift drag | |
| d | Difference | Course deposit on the side |
| d | Thickness of Flexible Pavement | Thickness of the flexible ceiling ( runway ) - replaced by Pavement Classification Number (PCN) |
| THERE | Decision Altitude | Decision height (for the final approach) (at height above sea level - MSL). It essentially depends on the Obstacle Clearance Altitude - OCA - (see also Decision Height - DH). Shortly before the runway (usually at a height of 200 ft AGL - with ILS CAT I), the pilot has to decide whether a landing is possible (visibility, attitude, etc.) or whether he can abort the landing and use the missed approach procedure. initiates; Reference for the initiation of the missed approach procedure for the CAT I ILS approach; is z. B. on the MD-80 on the altimeter. |
| THERE | Density Altitude | Density height |
| THERE | Drift angle | Drift angle |
| THERE | Deutsche Airbus (part of Airbus Industries) - Deutsche Airbus was founded in 1990. It belongs 100% to Messerschmitt-Bölkow-Blohm (MBB) and includes the entire civilian part, while MBB has the military production. | |
| THERE | Digital to analog | Digital to analog ( digital-to-analog converter - DAU) |
| DAA | Delivery at Aircraft | Procedure for hand baggage handling on commercial aircraft with limited space in the cabin |
| DABS / ATARS | Discrete Address Beacon System / Automatic Traffic Advisory and Resolution Service |
Radio beacon with direct address for automatic traffic recommendations |
| DABS | Daily Airspace Bulletin Switzerland | Replacement for the KOSIF |
| DAC | Digital audio control | |
| DACT | Dissimilar Air Combat Training | |
| DADC | Digital Air Data Computer | |
| DAR | Digital AIDS recorder | |
| DAeC | German Aero Club | |
| DAFIF | Digital Aeronautical Flight Information File | File (database) with global navigation data (updated every 28 days - or more frequently) |
| DA (H) | Decision Altitude (Height) | Decision height |
| DAIR | Direct Altitude And Identity Readout | |
| DALR | Dry Diabatic Lapse Rate | see: Atmospheric temperature gradient |
| DAP | Departure and Approach Procedures | Departure and approach cards |
| DAR | Designated Airworthiness Representative | |
| DARC | Direct Access Radar Channel | (ATC) |
| THE | Delay assignment | |
| THE | Density airspeed | Density speed |
| THE | Designated Alteration Station | Authorized company for modifications |
| THE A | German Aerospace Airbus GmbH | |
| D-ATIS | Digital Automatic Terminal Information Service | |
| DATR | Digital audio tape reproducer | |
| DAU | Digital-to-analog converter (DAC) | Digital-to-analog converter |
| DAVVL | German Bird Strike Committee - GBSC | German Committee for the Prevention of Bird Strikes in Air Traffic ; see: bird strike |
| DAW | Digital-to-analog converter (DAC) | Digital-to-analog converter |
| DAYLT | Daylight | daylight |
| dB | Decibel | Decibel (unit) |
| DB | (Russian) Дальний Бомбардировщик, Dalnij Bombardirowschtschik, Long Range Bomber |
Long-range bombers - e.g. B. Bolkhovitinov DB-A , Yermolayev Jer-2 , Petlyakov Pe-8 |
| DBML | Diabetic Meal (Catering Code) | Diabetic food - see: airplane food |
| DB-NfL | Database news for air drivers | |
| DBR | Damaged beyond (economical) repair | |
| DBW | Distance Between Waypoints | Distance between waypoints |
| DC | Direct Current | Direct current |
| DC | Doors closed | Doors of the plane closed |
| DCA | Department of Civil Aviation | |
| DCAC | Define and Control Airplane Configuration | A system for the comprehensive improvement of business processes (used by Boeing ) |
| DCAC / MRM | Define and Control Airplane Configuration / Manufacturing Resource Management | A system for the comprehensive improvement of business processes (used by Boeing ) |
| DCADIZ | Washington Air Defense Identification Zone | Washington DC Military Air Defense Zone |
| DCAS | Digital Controlled Audio System | |
| DCGF | Data conversion gateway function | ( Boeing ) |
| DCIR | DC isolation relay | |
| DCKG | docking | dock (park) |
| DCL | Departure clearance | Start release |
| DCM | Deadhead crew member | Personnel without official duties on board |
| DCMF | Data communication management function | ( Boeing ) |
| DCMS | Data Communication Management System | ( Boeing ) |
| DCMSD | Decommissioned | Decommissioned |
| DCN | Diplomatic Clearance Number | Number of diplomatic released |
| DCRZ | Descend to and cruise | |
| DCS | Departure control system | |
| DCT | Direct; Direct To | (Release) directly after (location) |
| DCU | Data Concentration Unit | Data processing unit |
| DCV | Directional Control Valve | Control valve for the flow direction |
| DD | Day | Day (two-digit format: 01, 02, ..., 31) |
| DD | Drift down | |
| D / D | Direct Descent | |
| D&D | Distress and Diversion | Emergencies and diversions (Distress and Diversion Frequency - 212.5 MHz; Distress and Diversion controller - ATC) |
| DDG | Dispatch Deviations Guide | |
| DDI | Digital display (screen) | |
| DDM | Difference in Depth of Modulation | |
| DDPG | Dispatch Deviations Procedures Guide | |
| GDR | Digital data recorder | |
| DDRMI | Digital Distance Radio Magnetic Indicator | |
| DEC | December | December |
| DEC | Decrease | lose weight, decrease |
| DECCA | Decca | Decca navigation system |
| DECEL | Decelerate, Decelerated | slow down, slow down |
| DECMSND | Decommissioned | shut down |
| DECOM | Decommission | Decommissioning |
| DECTRA | Hyperbola navigation method | |
| DED | Dedicated | |
| DEE | Data terminal equipment | |
| DEEC | Digital electronic engine control | Automatic thrust control |
| DEFCS | Digital Electronic Flight Control System | |
| DEG | Degrees | Degree (e.g. DegF - ° F; DegC - ° C) |
| DEGC | Degrees Celsius | Degrees Celsius (° C) |
| DEL | Delivery; Clearance delivery | Release (initiation of releases); separate airport frequency of air traffic control, on which only releases of the flight route are given before take-off |
| DEL | Delete | Clear |
| DELAG | German Airship Transport Corporation | Deutsche Luftschifffahrts-Aktiengesellschaft (the first airline) |
| Delte-ISA | Current temperature deviation from the International Standard Atmosphere (ISA) | |
| DEM | Demand | Need, demand |
| THE OLD | Density Altitude | Density height |
| DENEG | Fog Dispersal Operations | Measures to dissolve fog (weather key for METAR and TAF ) |
| DEP | Departure; Depart | Start ; Depart; Departure; separate frequency of air traffic control, on which only the radio traffic for the departure is processed; also: DP |
| DEP | Departure message | Departure notification |
| DEP | Depressurize | Loss of pressure, lowering of pressure |
| DEPA | Deportee Accompanied | Escorted deportee |
| DEP CON | Departure control | Departure control (air traffic control department); also: DPC |
| DEPO | Deportee | Deported |
| DEPR | Depressurize | Release pressure (remove pressure) |
| DEPT | Departure; Depart | Begin; Depart; departure |
| DEPT | Department | Department |
| DEPU | Deportee Unaccompanied | Unaccompanied deportee |
| OF THE | Departure end of runway | Departure side of the runway |
| OF THE | Designated Engineering Representative | |
| OF | Descent; Descending To | sink, sink up |
| DESA | Douglas El Segundo Airfoil | |
| DESALT | Desired altitude | |
| DESC | Descendt | descent |
| DEST | Destination | Destination, destination |
| DET | Detent | Lock, locked (e.g. spoiler lever in DET position) |
| DET | Detection | Proof, detection (e.g. fire protection det & warn - fire protection detection and warning) |
| DET | Detector | sensor |
| DETRESFA | Distress phase | Emergency level |
| DEU | Display electronic unit | ( Boeing 737 NG) The Common Display System (CDS - see further explanations there) consists of 6 LCD flat screens (LC Display Unit - DU) in the cockpit and two Display Electronic Units (DEU); the DEUs control the display units; the Deus collect, process and display the data - via analog and digital displays; each of the two DEUs can serve as a completely independent source of flight information (for the pilot and co-pilot); Normally the DEU on the left outputs its data on the two screens (DU) of the captain and the upper screen above the center console (upper-center display), the DEU on the right outputs its data on the two DUs of the copilot and the lower screen above the center console (lower-center display) off; should a DEU fail, the system can automatically switch all 6 DUs to the remaining DEU; The pilots can also switch to the other DEU manually (if they suspect an error that was not detected by the system) |
| DEV | Deviation (navigation) | Compass deflection due to disturbances within the aircraft (the values can be found in the deviation table on the magnetic compass) |
| DEWIZ | Distant Early Warning Identification Zone | On the coastal waters of Alaska and Canada |
| DF; D / F | Direction finding ; Direction Finder | Direction finder; Determination of direction from the airfield by means of bearing of the radio transmitter |
| DFA | Delayed flap approach | |
| DFDAC | Digital Flight Data Acquisition Card | ( Boeing ) |
| DFDAF | Digital Flight Data Acquisition Function | ( Boeing ) |
| DFDAU | Digital Flight Data Acquisition Unit, Digital Flight Data Annunciation Unit |
(e.g. DFDAU ARINC 429 broadcast database) |
| DFDR | Digital flight data recorder | Digital flight data recorder ( flight recorder ) |
| DF FIX | Direction Finding Fix | Geographic position of the aircraft determined by radio direction finding |
| DFGS | Digital Flight Guidance System | ( McDonnell Douglas MD-80 ) Integrated computer system to control the flight attitude in all three planes, speed, stability, thrust and navigation |
| D-FIS | Data Link Flight Information Service | |
| DFL | German research institute for aviation | |
| DFL | Dry Film Lubricant | Dry film lubricant |
| DFNP | German radio navigation plan | |
| DFS | German Air Navigation Services | Deutsche Flugsicherung GmbH |
| DFV | German Airline Dispatchers Association - GALDA | German flight dispatcher association - flight dispatcher |
| DFVLR | German Aerospace Center | German Aerospace Research Center = German Aerospace Center (DLR) |
| DG | Directional gyro; Heading Indicator |
Course gyro (shows the current heading in the HSI ) |
| DGAC | Direction Générale de l'Aviation Civile | French regulator for civil aviation |
| DGAC Esp | Dirección General de Aviación Civil | Spanish regulator for civil aviation |
| DGAC Chile | Directión General de Aeronáutica Civil - Chile | Chilean Authority for Civil Aviation |
| DGLR | German Aerospace Society | German Aerospace Society - Lilienthal-Oberth e. V. , Bonn |
| D-GNSS | Differential Global Navigation Satellite System | |
| DGPS | Differential Global Positioning System | Differential GPS ; System for very precise location determination |
| DGR | Dangerous Goods Regulations (Cargo Code) | Dangerous goods regulations |
| DH | Decision Height | Decision height above the runway threshold (on final approach); Decision height above ground (compare also Decision Altitude - DA); the height above the touchdown point which, in the case of a CAT II ILS approach, serves as a reference when deciding to initiate the missed approach procedure |
| DH | Dead head | Dead head flight ; Empty flight |
| DHC | German Helicopter Club | |
| DHF | Dead head flight; Positioning flight |
Dead head flight ; Empty flight |
| DHMI | Turkish air traffic control | |
| DHOV | Depart from hover | |
| DHV | German Hang Glider Association | |
| DIAS | Differential GNSS Instrument Approach System | |
| DIF | Diffuse | diffuse, radiating (weather code for METAR and TAF ) |
| DIFF | Difference, differential | difference |
| DILC | Diving lamp in cabin | Diving torch in hand luggage |
| DILH | Diving lamp in hold | Diving torch in checked baggage |
| Dip | Kink depth | see horizon # horizon in nautical science, chin line |
| DIPB | Diplomatic Baggage | Diplomatic baggage |
| TO YOU | Director | Job position for air traffic controllers ; the director receives the aircraft from approach control ( APPROACH ) and then brings them safely to the ILS (course and glide path); he also relieves the approach controller of the work in heavy air traffic |
| TO YOU | Direct | directly |
| DIR / INTC | Direct / Intercept course | a page in the flight management computer |
| DIS | Distance | distance |
| DISC | Disconnect | separate |
| DISCH | Discharge | empty (mostly fire extinguishing system) |
| DISCONT | Discontinued | interrupted |
| DISP | Dispatch | |
| DISPL | Displaced | offset |
| DISPL | Display | display |
| DIST | Distance | distance |
| DIV | Diversion | Alternative flight to the alternate airport |
| DIV | divert; diverting | evade - to the alternate airport |
| DK | deck | |
| DL | delta | |
| D / L | Datalink | Data Connection |
| DLA | Delay; Delayed | Delay, delayed |
| DLA | Delay message | Delay notification |
| DLBA | Douglas Long Beach Airfoil | |
| DLC | Direct lift control | Fly-by-wire enables a change in lift by means of a combined HR and flap deflection without changing the pitch angle |
| DLC | Delayed clearance | |
| DLD | Demonstrated Landing Distance | |
| DLI | Dead Load Index | (on the loadsheet) |
| DLIP | Data link interface protocol | |
| DLIR | Downward Looking Infrared (sensor) | Infrared sensor looking downwards (see also: FLIR - Forward Looking Infrared - infrared sensor looking in the direction of flight; SLIR - Sideways Looking Infrared - infrared sensor looking to the side) |
| DLK | Datalink | Telex communication air-to-ground |
| DLODS | Duct Leak Overheat Detection System | ( Boeing 777 ) |
| DLQ | Deck Landing Qualification | Suitability for airborne flight operations |
| DLP | Data Link Processor | |
| DLR | German Aerospace Center | German Aerospace Center |
| DLS | Data load system | |
| DLY | Daily | Every day |
| DM | Disconnected mode | |
| DM | Descent and Maintain | sink (to ...) and then hold altitude (e.g. D / M FL 120) |
| DMAN | Departure manager | Departure manager |
| DMC | Display management computer | Receives signals from the VOR receiver and shows them on the navigation display |
| DME | Distance measuring equipment | Distance measuring device by measuring the transit time of query and response signals from a DME system; Distance to ILS or VOR; the DME is part of the NAV receiver. |
| DMEG | DME collocated with glide slope | |
| DMEL | DME collocated with localizer | |
| DME / P | Precision DME | Precision DME |
| DMEV | DME collocated with VOR | |
| DME (Y) | TACAN compatible DME | DME compatible with TACAN |
| DMG | German Meteorological Society ( DMG website ) | |
| DML | Distributed mode loudspeakers | |
| DMLS | Doppler Microwave Landing System | Doppler microwave landing system |
| DMM | Data memory module | ( Boeing ) |
| DMOD | Distance modification | see: Traffic Alert and Collision Avoidance System |
| DMtCs | Disqualifying Mental Conditions | (according to FAR 67.207 Mental) |
| DMU | Data Management Unit | |
| DN | Down | downward |
| DNA | Does Not Apply | not applicable; does not apply |
| DNG | Danger; Dangerous | Danger; dangerous |
| DNG | Downgraders | Passenger placed in a lower seat class |
| DNL | Day-night sound level | Noise measurement at the airport - measured over 24 hours - with special weighting of night noise between 10:00 pm and 7:00 am (10 dB "penalty") - environmental noise (excluding aviation) is around 50–55 dB - the 65 dB noise curve is drawn on an airport map - there should be no residential buildings within this area - see: Air traffic (ecological impact) |
| DNTKFX | Down track fix | Down-track fix feature of the flight management system - draws a line or close to the course line - should be used if no airport is shown on the map of the navigation display during cruise - so you always know where to land in an emergency; On the Boeing 767 , the Down Track Fix mode (feature) generates a 400 NM long dashed green line - this is usually long enough to determine the distance from the fix (Fix - is a selected point - any prominent point - mostly along the planned course - or here in the direction of the emergency landing airport) up to the magenta line (??? what is meant by this ???) - in the event of a course deviation, you can easily recognize the original course |
| DNWND | Downwind | Counter approach (section of the traffic pattern ) |
| DO | Director of Flight Operations | Director of Flight Operations (a management position in airlines and corporate aviation; he sets the company procedures for the flight crew; he is responsible for the safe and efficient operation of the company's aircraft) |
| DOC | Document | document |
| DOC | Direct operating costs | direct operating costs |
| DOD | Department of Defense (USA) | United States Department of Defense |
| DOF | Date Of Flight | Date of flight; Day of departure |
| DOF | Degree of Freedom | Degree of freedom - for example on the full flight simulator ( flight simulator ) |
| DOHC | Double overhead camshaft | Double overhead camshaft |
| DOI | Dry Operating Index | Factor-normalized moment in the loading planning of commercial aircraft |
| DOM | Dry Operating Mass | Operating empty weight of an aircraft comprising the actual aircraft empty weight plus weight of crew including crew baggage, catering, magazines, etc. and drinking water |
| DOM | Domestic | Domestic (domestic flight) |
| DOP | Position Dilution of Precision | Statistical accuracy specification of the GPS device |
| DOP | Doppler radar ( precipitation radar ) | |
| DOT | Department Of Transportation (USA) | United States Department of Transportation |
| DOTS | Dynamic Ocean Track System | |
| DOW | Dry operating weight | Operating empty mass; Use empty weight; operational base weight |
| DP | Dew Point | Dew point (weather key for METAR and TAF ) |
| DP | Departure Procedure | Departure procedure (e.g. SID - Standard Instrument Procedure) |
| DP | de-icing pads | De-icing areas (at the airport) |
| DPCR | Departure Procedure | Departure procedure |
| DPCU | Digital Passenger Control Unit | ( Boeing ) |
| DPE | Unit Load Device (ULD) | IATA ID code for a specific type of air cargo container - LD2 catering container - see: Airplane food |
| DPI | Departure planning information | estimated departure times |
| DPP | Decision point procedure | Decision point procedure; Reclearance (a procedure for recalculating fuel consumption during the flight - at the decision point) |
| DPT | Depth | depth |
| DQF | Unit Load Device (ULD) | IATA ID code for a specific type of air cargo container - LD8 container |
| DR | Dead reckoning | Dead reckoning , pairing |
| DR | Drifting; low drifting | impulsive; shifting (weather code for METAR and TAF ) |
| DR | Door | Door (e.g. OIL DR - Oil Cooler Door - adjustable opening for the oil cooling; CABIN DR UNSAFE - outer door not closed - display on the annunciator panel) |
| DR | Drain | |
| DRES | Real-time and embedded system | Distributed systems that work in real time (this is how the many computers in large aircraft work together) ( real-time system ) |
| DRF | German air rescue service | |
| DRG | During | while |
| DRM | Dispatch resource management | |
| DRPFF | Dropoff | Drop (parachute jump) ( parachute jumping ) |
| DRSN | Drifting snow | Snow sweeping |
| DRVSM | Domestic Reduced Vertical Separation Minimums | (UNITED STATES); see: RVSM |
| DS | Dust storm | Dust storm (weather key for METAR and TAF ) |
| DSB | Double side band | Double sideband (radio) - see: Sideband |
| DSCH | Discharge | empty (fire extinguisher) |
| DSCNT | Descend | Sink |
| DSF | Display system function | ( Boeing ) |
| DSMA | Douglas Santa Monica Airfoil | |
| DSO | Defensive System Officer | Crew member of a fighter aircraft who is responsible for the defense systems of the aircraft - e.g. B. at the Rockwell B-1 ( weapons system officer ) |
| DSP | Display select panel | ( Boeing ) |
| DSPLCD THR | Displaced threshold | Relocated runway threshold |
| DSR | Display system replacement | |
| DST | Daylight Saving Time | Summertime |
| DSTNG | Dusting | Spray insert (spray aircraft) - see: Agricultural aircraft |
| DSTRS | Dusters | Spray planes |
| DT | Daylight Saving Time | Summertime |
| DT | Displaced threshold | Relocated runway threshold |
| DTAM | Descend To and Maintain | Sink to (altitude) and (then altitude) maintain |
| DTAS | Digital Terminal Automation System | |
| DTCH | Ditch | Water landing (???); Crash into water (???) |
| DTED | Digital Terrain Elevation Data | |
| DTG | Date Time Group | Date-time number group (weather code for METAR and TAF ) |
| DTG | Distance To Go | Distance remaining (to waypoint or destination) |
| DTOP | Dual threshold operation | Two-threshold operation - see HALS / DTOP |
| DTK | Desired track | |
| DTRT | Deteriorate, deteriorating | worsening, worsening |
| DTW | Dual tandem wheels | Double wheel tandem |
| YOU | Display unit | Display panel |
| YOU | Widespread Dust | Visibility impairment due to extensive haze - is not reported for views over 3000 m (weather code for METAR and TAF ) |
| DUAT | Direct user access terminal | An information system from the FAA for independent weather briefing; accessible to the pilot via the Internet; to submit or change a flight plan; for weather information - with data from the NWS and FAA |
| DUATS | Direct User Access Terminal System | see: DUAT |
| DUC | Dense Upper Clouds | dense altitude clouds (weather key for METAR and TAF ) |
| DULF | German Ultralight Flight Association V. | |
| MAJOR | Duration; During | Duration (weather key for METAR and TAF ) |
| DURC | During the climb | During the climb |
| DURD | During Descent | During the descent |
| DVFli | Service regulations for the flying personnel of Lufthansa | |
| DVFR | Defense Visual Flight Rules | |
| DVO | Implementing regulation | |
| DVOR | Doppler VOR | VHF rotary radio beacon utilizing the Doppler effect |
| DVORTAC | Doppler VOR and TACAN | Combination of DVOR and TCAN system |
| DVRSN | Diversion | Diversion (e.g. due to weather) |
| DW | Dual wheels | Double wheel |
| DWNDRFT | Downdraft | Downward wind movement |
| DWNHLL | Downhill | downhill |
| DWD | German Meteorological Service | German Weather Service |
| Double room | Dropping zone | Drop zone |
| Double room | Drizzle | Drizzle (= drizzle) (Weather key to METAR and TAF ) |
to the beginning of the letter - D ... (to the beginning of the list) ... (to the next letter - E)