Aviation accident of the Yakovlev Jak-40 CCCP-88208 of Aeroflot
| Aviation accident of the Yakovlev Jak-40 CCCP-88208 of Aeroflot | |
|---|---|
 A Yak-40 of the airline |
|
| Accident summary | |
| Accident type | Controlled flight into terrain |
| place | 1.5 km northwest of Ust-Kut Airport , Soviet Union.svg){kind=small}
|
| date | 17th December 1976 |
| Fatalities | 7th |
| Survivors | 0 |
| Aircraft | |
| Aircraft type | Yakovlev Yak-40 |
| operator | Aeroflot |
| Mark | CCCP-88208 |
| Departure airport | Ust-Kut Airport, Soviet Union
|
| Destination airport |
Kirensk Airport , Soviet Union
|
| Passengers | 4th |
| crew | 3 |
| Lists of aviation accidents | |
On December 17, 1976 there was a flight accident of the Yakovlev Jak-40 CCCP-88208 of Aeroflot on a cargo flight from Ust-Kut to Kirensk , with all 7 occupants killed
Airplane and occupants
The aircraft was a less old than a year Yakovlev Yak-40 ( aircraft characteristics : CCCP-88208, factory number : 9631349), with 3 turbofan engines of the type Ivchenko AI-25 was equipped and has been used since August 23, 1976th It completed 327 hours of operation and 348 flight cycles.
The crew consisted of a flight captain , a first officer and a flight engineer . In addition, 2 Aeroflot technicians and 2 cargo attendants flew as passengers.
Weather
At the time of the accident, there was a moonless night with an air temperature of −36 ° C and individual cumulus clouds at a height of 600 m, a wind from a direction of 240 ° (west-southwest) 4–7 m / s and blowing snow with a visibility of 10 km. The on-site pressure was 703.5 mm Hg .
course
The aircraft was loaded with 1.2 t of industrial goods, 2½ hours before the actual take-off. The pilots then hastily prepared for take-off and did not work through the take-off checklist completely. So they set the horizontal stabilizer to −6 ° instead of −3.6 °, the captain set his pressure gauge too high by 10 mm Hg , and the cabin was not heated despite the cold, which was against NTEWS-71.
Thereupon they rolled hastily on the runway at a speed of 30-50 km / h and accelerated at 19:39 local time about 350 m before the actual runway to take off on course 300 ° after they had already worked 10 hours 35 minutes. When the pilots pulled the steering wheel very hard at takeoff, the Jak-40 took off at a speed of 155–160 km / h instead of 185 km / h, also because of the incorrect preparations. The pilots then retracted the flaps at 210–220 km / h, which, according to the flight manual, 20 km / h is not enough, and reduced the pitch angle in order to gain speed. Because of the darkness, they did not recognize the following descent, during which the aircraft was getting faster and faster, especially since the captain was shown an altitude of 100 m too high due to his incorrectly set pressure gauge.
It grazed trees with a pitch angle of −5 ° one minute after take-off, 1500 m from the end of the runway and at a height of 11 m. After another 77 m it fell into the taiga , shattered and caught fire ; the debris was distributed over an area of 300 x 50 m. The first officer was found alive but died hours later in hospital from his injuries.
root cause
The investigators saw the inadequate preparation and the wrong techniques on the part of the pilots at the start as the cause of the accident.
swell
- Aircraft accident data and report CCCP-88208 on the Aviation Safety Network , accessed April 16, 2019.
- Description of the accident on airdisaster.ru , accessed on April 16, 2019
- Description of the accident on avia.pro , accessed on April 16, 2019
Coordinates: 56 ° 30 ′ 36 " N , 105 ° 25 ′ 48" E