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Accident
Last updated: 24 October 2017
Statuts:Enquête Officielle
Date:lundi 12 septembre 1988
Heure:13:50
Type/Sous-type:Silhouette image of generic DC10 model; specific model in this crash may look slightly different
McDonnell Douglas DC-10-10
Compagnie:United Airlines
Immatriculation: N1830U
Numéro de série: 46629/208
Année de Fabrication: 1975
Heures de vol:37265
Moteurs: 3 General Electric CF6-6D
Equipage:victimes: 0 / à bord: 10
Passagers:victimes: 0 / à bord: 197
Total:victimes: 0 / à bord: 207
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Denver-Stapleton International Airport, CO (DEN) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Nat.
Aéroport de départ:Chicago-O'Hare International Airport, IL (ORD/KORD), Etats-Unis d'Amérique
Aéroport de destination:Denver-Stapleton International Airport, CO (DEN/KDEN), Etats-Unis d'Amérique
Détails:
A McDonnell Douglas DC-10-10 operated by United Airlines, suffered a landing accident at Denver-Stapleton Airport, CO.
As the captain was deploying reversers during landing, reversers no. 2 and 3 unlocked and deployed, but reverser no. 1 was binding and only moved to the unlocked position. The captain was not warned of this condition, though the second officer should have monitored the illumination of the reverser lights. The captain said he reached to check the no. 1 lever. At about that time, the aircraft yawed right. Despite immediate action by the captain, directional control of the aircraft was lost due to yawing caused by the inoperative thrust reverser. The aircraft continued off the runway, crossed two taxiways and the nose gear collapsed.
After stopping, evacuation was ordered. Evacuation slides deployed normally, but with the aircraft on its nose, use of slides at doors 4L & 4R was discontinued due to excessive vertical angle of slides.
Investigation revealed that after touchdown, engine no. 1 accelerated with forward thrust as no. 2 and 3 engines provided reverse thrust. At about the same time, the aircraft's nose lifted off the runway to a 4 degree attitude and the aircraft went off the runway.

Probable Cause:

Probable cause:
monitoring..inadequate..flight engineer
thrust reverser,cockpit control..bent
thrust reverser,cockpit control..binding(mechanical)
reversers..improper use of..pilot in command
directional control..not maintained..pilot in command
thrust reverser..inoperative

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 10 months
Accident number: DEN88MA203
Download report: Summary report

Sources:
» NTSB


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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 Chicago-O'Hare International Airport, IL et Denver-Stapleton International Airport, CO est de 1436 km (897 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.
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