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Last updated: 14 December 2018
Statuts:Enquête Officielle
Date:samedi 9 mai 1987
Heure:11:12
Type/Sous-type:Silhouette image of generic IL62 model; specific model in this crash may look slightly different
Iliouchine Il-62M
Compagnie:LOT Polskie Linie Lotnicze
Immatriculation: SP-LBG
Numéro de série: 3344942
Année de Fabrication: 1983
Heures de vol:6972
Cycles:1752
Moteurs: 4 Soloviev D-30KU
Equipage:victimes: 11 / à bord: 11
Passagers:victimes: 172 / à bord: 172
Total:victimes: 183 / à bord: 183
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:6 km (3.8 milles) SE of Warszawa-Okecie Airport (WAW) (   Pologne)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Intern.
Aéroport de départ:Warszawa-Okecie Airport (WAW/EPWA), Pologne
Aéroport de destination:New York-John F. Kennedy International Airport, NY (JFK/KJFK), Etats-Unis d'Amérique
Numéro de vol:LO5055
Détails:
At 10:18 flight LO5055 took off from Warsaw runway 33 for a flight to New York-JFK. The aircraft headed for the GRU VOR, which it passed at FL265, climbing to FL310. Two minutes later (at 10:41) the no. 2 engine Low Pressure turbine shaft broke loose, followed by the failure of the turbine disc. Debris punctured the aft fuselage, causing a fire in the cargo hold. The elevator control system was severed and the no. 1 engine had to be shut down. The flight crew immediately started an emergency descent to 4000 m. After shutting down both no. 1 and no. 2 engine the crew mistakenly thought the fire was extinguished. They had decided to land at Modlin airport, but still unaware of the fire, changed to Warsaw-Okecie runway 33 because of better rescue equipment there. The flight started a left turn for runway 33 at 11:09 at an altitude of 1450 m and an airspeed of 480 km/h. The crew lost control during the turn and the Il-62 crashed into a forest, 6 km from the runway at an airspeed of 465 km/h and an 11deg. left bank, 12 degrees nose-down.

Probable Cause:

PROBABLE CAUSE: "The cause of the accident was the destruction of engine no.2 resulting in disconnection of the longitudinal control system from the control column, cabin depressurisation, damage to the electric system and fire. At the end stage of flight the fire caused the loss of the aircraft longitudinal control and the impact with the ground after 31 minutes as counted from the beginning of the emergency situation. The destruction of engine no.2 occurred without any signal from the warning/testing system. Under the circumstances the crew members were not able to stop the engine in good time, consequently an emergency situation was created on board the aircraft."

Sources:
» ICAO Adrep Summary 1/88 (#45)
» ICAO Circular 259-AN/153 (1-30)
» Soviet Transports


Photos

photo of Ilyushin Il-62M SP-LBG
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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Warszawa-Okecie Airport et New York-John F. Kennedy International Airport, NY est de 6798 km (4249 miles).
Accident location: Exact; deduced from official accident report.

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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Ilyushin Il-62

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