Aeroflot flight 1661
Aeroflot flight 1661 | |
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Aeroflot aircraft of the same construction |
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Accident summary | |
Accident type | Collision with an object in the air |
place | 20 km southeast of Toguchin , Soviet Union |
date | April 1, 1970 |
Fatalities | 45 |
Survivors | 0 |
Aircraft | |
Aircraft type | Antonov An-24B |
operator | Aeroflot |
Mark | CCCP-47751 |
Departure airport | Novosibirsk-Tolmachevo Airport |
Stopover | Emelyanovo Airport |
Destination airport | Bratsk airport |
Passengers | 40 |
crew | 5 |
Lists of aviation accidents |
On April 1, 1970, a 3-year-old Antonov An-24 B crashed on the inner-Soviet scheduled flight Aeroflot flight 1661 from Novosibirsk via Krasnoyarsk to Bratsk on the first section, killing all 45 passengers.
Inmates
The crew consisted of a flight captain , a first officer , a flight engineer , a navigator and a flight attendant . There was an ice hockey team among the passengers .
course
The An-24 took off at 3:42 a.m. local time and climbed in a left turn to 1,500 m and continued to climb on the planned course. When the plane reached an altitude of 4,200 m, the reported pilots in the air traffic control . At 3:53 am they received clearance to climb to 6,000 m. When the air traffic controller made radio contact at 4:10 a.m., he received no answer.
The partially burned debris was found in a field 20 km southeast of Toguchin and 142 km east of the departure airport.
Weather
The weather in this area on that day was very cloudy (10 points or an coverage of 8/8), with the clouds having a lower limit of 900 m and an upper limit of 11,000 m.
root cause
The debris of two weather balloons from the weather service and the cockpit were found outside the main wreck. This included the windshields and parts of the aircraft nose that housed the aircraft's radar ; they showed signs of collision with a solid object in the air. Investigators concluded that the aircraft was climbing through the clouds in the nightly darkness at an altitude of 5,400 m into a weather balloon. The pilots lost control and the aircraft went into a dive , in which both wings and the entire tail unit broke off at an altitude of 2,000 m and a speed of 700 km / h . The remainder of the fuselage hit the ground at 4:07 a.m., 25 minutes after take-off, at a horizontal speed of 300 km / h and a vertical speed of 216 km / h.
Similar accidents
On January 21, 1973, another An-24 had an accident under similar circumstances (see Aeroflot flight 6263 ).
swell
- Accident report An-24 CCCP-47751 , Aviation Safety Network (English), accessed July 31, 2019.
- Accident report on airdisaster.ru
- Information about the accident on avia.pro