Grumman G-73
Grumman G-73 Mallard | |
---|---|
Type: | twin-engine amphibious aircraft |
Design country: | |
Manufacturer: | |
First flight: |
April 30, 1946 |
Commissioning: |
1946 |
Production time: |
until 1951 |
Number of pieces: |
59 |
The Grumman G-73 Mallard ( German Mallard ) is a twin-engine amphibious aircraft of the US American manufacturer Grumman .
history
The pattern is based on the smaller Goose and Widgeon types and took off on its maiden flight on April 30, 1946 . The shoulder decker has a nose wheel retractable landing gear . The engines are installed above and in front of the wing to protect them from splashing water. The boat hull was designed in two stages; Additional tanks can be attached to the wing tips. Between 1946 and 1951, a total of 59 copies were produced, most of which were used as business and private aircraft with appropriate saloon facilities. Only a few served as a commercial aircraft, for example at Chalk's Ocean Airways .
A number of these machines are still in use today. In 2001, 32 copies were still registered in the USA. The radial engines were common in these machines since the early 1970s by Pratt & Whitney Canada PT-6-34 - Turboprop -Triebwerke with 551 kW power and modern Hartzell replaced propellers. The first conversions were carried out by Frakes Aviation, with the first machine taking off on its maiden flight in 1969 and receiving its approval in October 1970. These machines are known as the Turbo Mallard or G-73T . The seating was changed so that there is room for 17 passengers. The largest operator with four machines of this type was Chalk's Ocean Airways until it lost its flight license on September 30, 2007.
operator
Civil operator
Military users
Incidents
- On August 3, 1955, a Pacific Western Airlines Mallard ( aircraft registration number CF-IOA ) disappeared between Kemano and Kitimat ( British Columbia ). The search was stopped after a month. Three years later, on July 23, 1958, the wreck was found at an altitude of around 1,500 meters near Kemano. All 5 occupants, two pilots and three passengers, were killed.
- On 20 December 2005 Mallard of Chalk's Ocean Airways due to inadequate maintenance and lack of supervision fell by the FAA after the demolition of a wing on the way to the Bahamas near Miami Beach from (see also Chalk's-Ocean Airways Flight 101 ) .
- On January 26, 2017 at 5:03 p.m. local time, a Mallard with the aircraft registration VH-CQA crashed into the Swan River from a low altitude and from a steep curve during a demonstration for the Australian National Day ( Australia Day ) in Perth . Two people were killed in the accident.
Technical specifications
Parameter | Data |
---|---|
crew | 2 |
Passengers | 10 |
length | 14.70 m |
span | 20.30 m |
height | 5.72 m |
Wing area | ? m² |
Empty mass | 3969 kg |
Max. Takeoff mass | 6350 kg |
Cruising speed | 291 km / h |
Top speed | 364 km / h |
Service ceiling | 7500 m |
Range | 2070 km |
Engines | 2 × radial engines Pratt & Whitney R-1340 with 410 kW (557 PS), or modernized with 2 × turboprop engines Pratt & Whitney Canada PT6 A-34 with 450 kW (612 PS) each |
Comparable types
literature
- Thruelsen, Richard. The Grumman Story . New York: Praeger Publishers, Inc., 1976. ISBN 0-275-54260-2 .
- Winchester, Jim, ed. "Grumman Goose / Mallard." Biplanes, Triplanes and Seaplanes (The Aviation Factfile) . Rochester, Kent, UK: Grange Books plc, 2004. ISBN 1-84013-641-3 .
See also
Web links
- New York Times article about Chalk's accident
- Aircraft Maintenance Technology article about Chalk's accident
- NTSB preliminary report on Chalk's accident DCA06MA010 of 19 December 2005
- Picture of a Chalk's Mallard in Miami in 1996
- History of Chalk's Ocean Airways at answers.com
Individual evidence
- ↑ FliegerRevue November 2010, p. 68, Grumman G-73T Tubo Mallard
- ^ Accident report Grumman Mallard CF-IOA , Aviation Safety Network (English), accessed on February 4, 2020.
- ↑ Air-Britain Archive: Casualty compendium part 64 (English), March 1997, pp. 97/25.