Aeroflot Flight 411
An Aeroflot Ilyushin Il-62M, similar to the accident aircraft
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| Accident summary | |
|---|---|
| Date | 6 July 1982 |
| Summary | Low-altitude stall |
| Site | Mendeleyevo, Moscow Oblast, Soviet Union |
| Passengers | 82 |
| Crew | 8 |
| Fatalities | 90 (all) |
| Injuries (non-fatal) | 0 |
| Survivors | 0 |
| Aircraft type | Ilyushin Il-62M |
| Operator | Aeroflot |
| Registration | СССР-86513 |
| Flight origin | Moscow, Soviet Union |
| Stopover | Dakar, Senegal |
| Destination | Freetown, Sierra Leone |
Aeroflot Flight 411 was an international scheduled flight from Sheremetyevo Airport, Moscow to Freetown, Sierra Leone via Dakar in Senegal. Early on 6 July 1982, the four-engined Ilyushin Il-62 crashed and was destroyed by fire after two engines shut down shortly after take-off. All 90 passengers and crew on board died as a result of the crash.
The accident aircraft was an Ilyushin Il-62M, with registration SSSR-86513. Its first flight was in November 1980 and it had flown slightly more than 4,800 hours prior to the accident. The Il-62's four jet engines are mounted in pairs, on pylons either side of the rear fuselage.
The aircraft took off from Moscow's Sheremetyevo Airport at 12:33am with 82 passengers and 8 crew on board. Within seconds the engine fire warning for No. 1 engine was annunciated. The crew shut down the engine and discharged the engine fire extinguishers. Less than a minute later the engine fire warning for No. 2 engine was also annunciated and the crew shut this engine down as well. The crew turned the aircraft to return to Sheremetyevo Airport but after the second engine shutdown it was only at an altitude of about 160 metres (520 ft) and a speed of 320 kilometres per hour (170 kn). Despite the pilots' efforts to keep it airborne, the aircraft gradually lost height and airspeed until it stalled about 75 metres (246 ft) above the ground. It then crashed in a forested wetland 1.5 kilometres (0.9 mi) east of the town of Mendeleyevo and 11.4 kilometres (7.1 mi) northwest of Sheremetyevo Airport, less than three minutes after takeoff. All but one occupant died in the crash and subsequent fire; the sole survivor, a passenger from Sierra Leone, died on the evening of 8 July.
Post-crash examination of the engines found no pre-crash damage or signs of in-flight fire – the fire warnings were false. The fire warning system was almost completely destroyed by the crash and fire and the reason for the false warnings could not be determined; although there had been nine reported instances of bleed air leaks causing spurious engine fire warnings on Il-62s between 1975 and the date of the crash, this was ruled out as a cause.
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