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Statuts:Enquête Officielle
Date:mardi 6 avril 1993
Heure:01:10 HST
Type/Sous-type:Silhouette image of generic MD11 model; specific model in this crash may look slightly different
McDonnell Douglas MD-11
Compagnie:China Eastern Airlines
Immatriculation: B-2171
Numéro de série: 48495/461
Année de Fabrication: 1991
Heures de vol:4810
Cycles:1571
Moteurs: 3 Pratt & Whitney PW4460
Equipage:victimes: 0 / à bord: 20
Passagers:victimes: 2 / à bord: 235
Total:victimes: 2 / à bord: 255
Dégats de l'appareil: Mineurs
Conséquences: Repaired
Lieu de l'accident:1760 km (1100 milles) S of Shemya, AK (   Etats-Unis d'Amérique)
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Intern.
Aéroport de départ:Shanghai-Hongqiao Airport (SHA/ZSSS), Chine
Aéroport de destination:Los Angeles International Airport, CA (LAX/KLAX), Etats-Unis d'Amérique
Numéro de vol: 583
Détails:
China Eastern flight 583 had an inadvertent deployment of the leading edge wing slats while in cruise flight. The autopilot disconnected, and the captain was manually controlling the airplane when it progressed through several violent pitch oscillations and lost 5,000 feet of altitude. The captain regained stabilized flight, declared an emergency because of passenger injuries, and diverted to the US Air Force Base, Shemya, Alaska. Two passengers were fatally injured, and 149 passengers and 7 crewmembers received various injuries. The airplane did not receive external structural damage, but the passenger cabin was substantially damaged.

Probable Cause:

PROBABLE CAUSE: "The inadequate design of the flap/slat actuation handle by the Douglas Aircraft Company that allowed the handle to be easily and inadvertently dislodged from the UP/RET position, thereby causing extension of the leading edge slats during cruise flight. The captain's attempt to recover from the slat extension, given the reduced longitudinal stability and the associated light control force characteristics of the MD-11 in cruise flight, led to several violent pitch oscillations.
Contributing to the violence of the pitch oscillations was the lack of specific MD-11 pilot training in recovery from high altitude upsets, and the influence of the stall warning system on the captain's control responses. Contributing to the severity of the injuries was the lack of seat restraint usage by the
occupants."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 204 days (7 months)
Accident number: NTSB/AAR-93/07
Download report: Final report
Language: English

Sources:
» Air Safety Week 1 November 1993 (p. 1-3)
» Air Safety Week 19 April 93 (1,2)
» Air Safety Week 31 May 1993 (p. 1,2)
» Air Safety Week 12 April 1993 (p. 1,2)
» NTSB/AAR-93/07


Opérations de secours

NTSB issued 13 Safety Recommendations

Show all...

Photos

photo of MD-11-B-2171
accident date: 06-04-1993
type: McDonnell Douglas MD-11
registration: B-2171
 

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 Shanghai-Hongqiao Airport et Los Angeles International Airport, CA est de 10376 km (6485 miles).

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.
languages: languages

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