Narrative: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: "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."
Official accident investigation report
|investigating agency: ||National Transport Safety Bureau (NTSB) - United States of America |
|report status: ||Final|
|report number: ||NTSB/AAR-95/05|
|report released:||30 August 1995|
|duration of investigation: ||281 days (9 months)|
|download report: ||
Follow-up / safety actions
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not
display the exact flight path.
Distance from Saint Louis-Lambert International Airport, MO to Denver-Stapleton International Airport, CO as the crow flies is 1245 km (778 miles).