Accident
Last updated: 24 April 2014
Status:
Datum:vrijdag 20 oktober 1989
Tijd:02:32
Type:Silhouette image of generic IL76 model; specific model in this crash may look slightly different
Ilyushin 76TD
Luchtvaartmaatschappij:Aeroflot, Central Region Civil Aviation Directorate
Registratie: CCCP-76466
Constructienummer: 0023440153
Bouwjaar: 1982
Aantal vlieguren:2053
Aantal vluchten:2193
Bemanning:slachtoffers: 10 / inzittenden: 10
Passagiers:slachtoffers: 15 / inzittenden: 15
Totaal:slachtoffers: 25 / inzittenden: 25
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:nabij Leninakan Airport (LWN) (   ArmeniŽ) show on map
Fase: Nadering (APR)
Soort vlucht:Vracht
Vliegveld van vertrek:Ulyanovsk-Vostochny Airport (ULY/UWLW), Rusland
Vliegveld van aankomst:Leninakan Airport (LWN), ArmeniŽ
Beschrijving:
The Ilyushin 76 cargo plane departed Ulyanovsk on a training/cargo flight to Leninakan. The aircraft carried a cargo of 37200 kg. Approaching Leninakan the flight was cleared to descend to 3300 metres. During the descent the approach controller reported the airport pressure being 637 mm Hg. After issuing a further clearance down to 1100 metres, the controller corrected the airport pressure to 637 mm Hg. Erroneously the crew programmed their barometric altimeters using 736 instead of 636 mm Hg, causing a difference in altitude indication of about 1100 metres. Descent was continued at a vertical speed of 10 m/sec. At a height of 270 metres the GPWS alarm began to sound and continued to 19 seconds. Then the flight engineer suddenly informed the captain of the mistake, but no corrective action was taken. Ten seconds later the aircraft struck terrain and crashed.

PROBABLE CAUSE:
- error by the crew in programming both barometric altimeters using the 736 mm Hg pressure instead of the actual 636 mm Hg causing a descent below MDA;
- failure to use the radio altimeters, which deprived the crew of additional information about their descent below MDA;
- failure of the crew to respond to the recommendation by the flight engineer to climb;
Factors were:
- the fact that it was the instructor captain's first flight into Leninakan and the student pilot's (in the right hand seat) first flight on an Il-76;
- insufficient crew resource management;
- insufficient training of pilots regarding the actions to be taken in case of a GPWS warning

Bronnen:
» Soviet Transports
» ICAO Adrep Summary 5/89 (#50)


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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Ulyanovsk-Vostochny Airport en Leninakan Airport bedraagt 1550 km (969 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Networkís opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Ilyushin 76

  • 18e ongeval
  • 938+ built
  • 4e zwaarste ongeval (toen het plaatsvond)
  • 7e zwaarste ongeval (op dit moment)
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 ArmeniŽ
  • 2e zwaarste ongeval (toen het plaatsvond)
  • 4e zwaarste ongeval (op dit moment)
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