Accident description
Last updated: 28 November 2014
Status:Final
Date:Sunday 14 September 2008
Time:03:15
Type:Boeing 737-505
Operator:Aeroflot-Nord
Registration: VP-BKO
C/n / msn: 25792/2353
First flight: 1992-08-22 (16 years )
Engines: 2 CFMI CFM56-3C1
Crew:Fatalities: 6 / Occupants: 6
Passengers:Fatalities: 82 / Occupants: 82
Total:Fatalities: 88 / Occupants: 88
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:11,5 km (7.2 mls) NE of Perm Airport (PEE) (   Russia) show on map
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Moskva-Sheremetyevo Airport (SVO/UUEE), Russia
Destination airport:Perm Airport (PEE/USPP), Russia
Flightnumber: 821
Narrative:
Flight SU821 took off from Moscow (SVO) on a domestic flight to Perm. Contact with the flight was lost while the airplane was at 3600 feet in "difficult weather conditions", according to Aeroflot officials.
The plane came down on the outskirts of the city, hitting the ground just a few hundred yards from small wooden houses and apartment buildings.
Investigation revealed that the pilot lost spatial orientation during the night-time approach through clouds. This led to a banking of the plane onto its left wing, and its entering into an intensive descent and collision with the ground. The pilot was not familiar with the attitude indicator (ADI) used on Western jets, compared to those of Russian jets. Also, an unspecified amount of alcohol was detected in the pilot's body, and he was overworked.


The probable cause of the aircraft accident was the loss of spatial orientation of the crew, primarily the captain's failure to actively pilot the plane at the final stage of flight, which led to a left-hand bank, entering a steep descent and collision with the ground. The loss of spatial orientation occurred during a night flight, in clouds, with the autopilot disconnected, and automatic thrust control. A factor contributing to the loss of spatial orientation and the inability of its recovery, was the lack of training of the crew in techniques of piloting an aircraft, crew resource management (CRM) and insufficient skills coping with complex aircraft attitudes of aircraft with Attitude Direction Indicators installed on foreign and domestic modern aircraft. This indication differs from the display used on the types of aircraft which the crew previously operated (Tu-134, Antonov 2).

Classification:
Loss of control

Sources:
» RIA Novosti
» AP

Official accident investigation report
investigating agency: Interstate Aviation Committee (IAC / MAK) - Russia
report status: Final
report number: -
report released:29-MAY-2009
duration of investigation:257 days (8.6 months)
download report: Final report - the investigation accident VP-BKO (MAK -)

Photos

photo of Boeing 737-505 B-2591
B-2591 later moved to Russia (Aeroflot-Nord)
Add your photo of this accident or aircraft
 

Video/animation

Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Moskva-Sheremetyevo Airport to Perm Airport as the crow flies is 1137 km (710 miles).

languages: English Franšais Nederlands Deutsch Espanol

Share
Share

Boeing 737-500

  • 4th loss
  • 390 built
  • worst accident
safety profile

 Russia
  • 20th worst accident (at the time)
  • 21st worst accident (currently)
»safety profile