Turkish Airlines flight 1951

from Wikipedia, the free encyclopedia
Turkish Airlines flight 1951
Turkish Airlines B738 TC-JGE.jpg

The accident machine in August 2006 at Stuttgart Airport
Accident summary
Accident type Controlled flight into terrain
place About 1.5 km north of Schiphol Airport (18R / 36L), not far from the Rottepolderplein junction of the A9 with the A200 west of Zwanenburg
date February 25, 2009
Fatalities 9
Survivors 126
Injured 120
Aircraft
Aircraft type Boeing 737-800
operator Turkish Airlines
Mark TC-JGE
Surname Tekirdağ
Passengers 128
crew 7th
Lists of aviation accidents

On February 25, 2009, a Boeing 737-800 crashed on Turkish Airlines flight 1951 while approaching Schiphol Airport . The accident site is about 1.5 kilometers north of the touchdown point of runway 18R, west of Zwanenburg not far from the Rottepolderplein motorway junction, the connection between the A9 and the A5 . The plane broke in three parts but did not catch fire. The accident left nine dead and 120 injured (86 injuries were reported in the first reports). Since the railway 18R / 36L is called Polderbaan , the accident was nicknamed Polder Crash .

Flight history

The Boeing 737-800 took off from Ataturk Airport in Istanbul at 8:22 a.m. local time (6:22 a.m. UTC) . The landing was planned around 10:40 a.m. local time (9:40 a.m. UTC) at Schiphol Airport in the Netherlands near Amsterdam . During the approach to landing in normal weather conditions, the Boeing crashed with 135 people on board in a field near Haarlemmermeer . The crash site is about 150 meters from the Rijksweg 9 motorway, and the distance to runway 18R is about 1.5 kilometers.

plane

The Boeing 737-8F2 ( registration number : TC-JGE, c / n : 29789) completed its maiden flight on January 24, 2002 and was equipped with two CFM56-7B26 engines. The machine had only undergone its last A-check a few days earlier, on February 19, 2009 . The last C-Check was carried out in October 2008 with a detailed inspection of all systems and the aircraft structure. The plane was named Tekirdağ .

Rescue operations

Rescue units at the wreck
Location of the runways in Schiphol and the crash site (marked with a red star)

The machine broke into three parts after touching down in the field, but did not catch fire. This circumstance made the rescue and recovery operations much easier. Only a few minutes after the accident, the emergency services alerted by eyewitnesses arrived at the scene of the accident. The people were rescued from the rubble using special equipment. However, nine people, five Turkish and four US citizens, did not survive the accident, including three pilots - the flight captain , the first officer and a pilot in training - who were killed by the instrument panel. The injured people were taken to the surrounding hospitals in Amsterdam, Hoofddorp and Haarlem , eleven of them in critical condition.

The Autobahn 9 was closed in both directions between Amstelveen and Alkmaar . Flight operations at Schiphol Airport were temporarily suspended, and arriving aircraft were diverted to Rotterdam Airport , among other places .

Cause of accident

The final report of the investigation commission found that a defective radio altimeter was the trigger for the accident. One of the radio altimeters indicated an altitude of −8 feet on the approach, even though the machine was at an altitude of about 2000 feet (600 meters). The system for the automatic flight control (Autoflight System) therefore assumed that touchdown on the runway was imminent and reduced the engine power. The pilots knew about the incorrect display, but were obviously not aware of the effect on the automatic throttle control ( autothrottle ) and the autopilot . The reduced engine thrust led to a drastic loss of speed. Since the aircraft was too high for an ILS approach, it was necessary to lose altitude quickly anyway; therefore, the pilots only realized 100 seconds later that they had lost too much speed and had to react at full throttle. However, neither the automatic thrust control nor the autopilot were deactivated, so that the throttle control then took the throttle back to idle. The pilots noticed this error six seconds later and gave full throttle again - this time with the autopilot / autothrottle switched off correctly - but too late.

filming

Similar incident

On the Indian Airlines Flight 605 on 14 February 1990 decreased Airbus A320-200 of Indian Airlines because of a false declaration by the autopilot idle before the runway of HAL Bangalore Airport too deep down. On this flight, too, the machine was steered off-road because the pilots recognized the dangerous situation too late and could no longer avert the impact at that time.

Web links

Commons : Turkish Airlines Flight 1951  - Collection of pictures, videos and audio files

Individual evidence

  1. ↑ a b Nine killed as Turkish plane crashes near Amsterdam airport (English) , CNN . February 25, 2009. 
  2. ↑ Turkey plane crashes in Amsterdam BBC, February 25, 2009
  3. ↑ a b Crashed during approach, Boeing 737-800, near Amsterdam Schiphol Airport, 25 February 2009 (see at the beginning of the part “Consideration” and Appendix E) ( en ) Investigation Council for Security (Netherlands) . May 2010. Retrieved March 28, 2019.
  4. ↑ Amsterdam: Nine people die in plane crash. Focus Online, February 25, 2009; accessed February 25, 2009 .
  5. ↑ a b Turkish passenger plane crashes in Amsterdam Spiegel Online, February 25, 2009
  6. ↑ Black Box evaluated after crash landing : 86 injured, Focus Online, February 26, 2009
  7. ↑ SYSTEM FAILURE CASE STUDIES April 2012 Volume 6 Issue 4 - The Poldercrash. In: sma.nasa.gov. NASA , accessed December 5, 2017 .
  8. ↑ Crash in Amsterdam puzzles "Weather conditions were unproblematic", stern.de, February 26, 2009
  9. ↑ Turkish Airlines - media reports about technical defects even before the crash , on austrianwings.info
  10. ↑ Pilots killed by instrument panel Spiegel Online, February 26, 2009
  11. ^ Nine dead in an airplane crash in Amsterdam Reuters, February 25, 2009
  12. ↑ http://www.onderzoeksraad.nl/nl/search?s=turkish+rapport
  13. ↑ http://www.airliners.de/news/artikelseite.php?articleid=17525

Coordinates: 52 ° 22 ′ 39 "  N , 4 ° 42 ′ 50"  E