Status:	Definitief
Datum:	22 NOV 1994
Tijd:	22:03 CST
Type:	McDonnell Douglas MD-82
Luchtvaartmaatschappij:	Trans World Airlines - TWA
Registratie:	N954U
Constructienummer:	49426/1399
Bouwjaar:	1988
Aantal vlieguren:	21438
Motoren:	2 Pratt & Whitney JT8D-217A
Bemanning:	slachtoffers: 0 / inzittenden: 8
Passagiers:	slachtoffers: 0 / inzittenden: 132
Totaal:	slachtoffers: 0 / inzittenden: 140
Botsingsslachtoffers:	slachtoffers: 2
Schade:	Groot
Gevolgen:	Repaired
Plaats:	Saint Louis-Lambert International Airport, MO (STL) (Verenigde Staten)
Fase:	Start (TOF)
Soort vlucht:	Binnenlandse lijnvlucht
Vliegveld van vertrek:	Saint Louis-Lambert International Airport, MO (STL/KSTL), Verenigde Staten
Vliegveld van aankomst:	Denver-Stapleton International Airport, CO (DEN/KDEN), Verenigde Staten
Vluchtnummer:	427

Beschrijving:
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 accellerated 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: "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."

Bronnen:
» NTSB/AAR-95/05