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Last updated: 22 January 2021
Statuts:Enquête Officielle
Date:mardi 22 novembre 1994
Heure:22:03
Type/Sous-type:Silhouette image of generic MD82 model; specific model in this crash may look slightly different
McDonnell Douglas DC-9-82 (MD-82)
Compagnie:Trans World Airlines - TWA
Immatriculation: N954U
Numéro de série: 49426/1399
Année de Fabrication: 1988
Heures de vol:21438
Moteurs: 2 Pratt & Whitney JT8D-217A
Equipage:victimes: 0 / à bord: 8
Passagers:victimes: 0 / à bord: 132
Total:victimes: 0 / à bord: 140
Victime de la collision:victimes: 2
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Saint Louis-Lambert International Airport, MO (STL) (   Etats-Unis d'Amérique)
Phase de vol: Au décollage (TOF)
Nature:Transport de Passagers Nat.
Aéroport de départ:Saint Louis-Lambert International Airport, MO (STL/KSTL), Etats-Unis d'Amérique
Aéroport de destination:Denver-Stapleton International Airport, CO (DEN/KDEN), Etats-Unis d'Amérique
Numéro de vol:TW427
Détails:
TWA flight 427 collided with a Cessna 441, N441KM, at the intersection of runway 30R and taxiway Romeo, at the Lambert-St. Louis Airport. The MD-82 was taking off for Denver and had accelerated through 80 knots when the collision occurred. The MD-82 sustained substantial damage during the collision. The Cessna 441, operated by Superior Aviation, was destroyed. The pilot and the passenger were killed.

Probable Cause:

PROBABLE CAUSE: "The Cessna 441 pilot’s mistaken belief that his assigned departure runway was runway 30R, which resulted in his undetected entrance onto runway 30R, which was being used by the MD-82 for its departure. Contributing to the accident was the lack of Automatic Terminal Information Service and other air traffic control (ATC) information regarding the occasional use of runway 31 for departure. The installation and utilization of Airport Surface Detection Equipment (ASDE-3) and particularly ASDE-3 enhanced with the Airport Movement Area Safety System (AMASS), could have prevented this accident."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 281 days (9 months)
Accident number: NTSB/AAR-95/05
Download report: Final report

Sources:
» NTSB/AAR-95/05


Opérations de secours

NTSB issued 12 Safety Recommendations

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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 Saint Louis-Lambert International Airport, MO et Denver-Stapleton International Airport, CO est de 1245 km (778 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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