Incident at 55N 50W


1997-07-11: The B757 was out of Frankfort enroute New York at an altitude of 37,000 ft. At 55N 50W the crew reported that the left generator had failed and they were unable to start the APU at that altitude. The crew indicated that the APU might start at 33,000 ft. Gander ACC advised the B767 of traffic, a Delta Airlines flight at 35,000 ft. two minutes ahead then cleared the B767 to maintain 33,000 ft. There was no risk of collision as separation at the next reporting point had increased to five minutes. The TWA aircraft was travelling at .80 Mach and the Delta at .83 Mach. It is unclear as to whether the B767 used the contingency plan. TSB CLOSED. NAV CAN, will be conducting their own internal investigation.


CADORS Number 1997A0003
Occurrence Type Incident
Reported By Transportation Safety Board of Canada
Occurred At 1997-01-02 - 15:25
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Canada, Gander Oceanic, Atlantic Region, 55N 50W
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By Transportation Safety Board of Canada
Categories System/component failure or malfunction [non-powerplant],Airprox/TCAS alert/loss of separation/(near) midair collisions

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Operator TRANS WORLD AIRLINES, INC. (420) Commercial
Make  Silhouette image of BOEING
Model 767 333
Year Built
Engine Type
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number TWA741
Flight Rule
CARS Subpart
Phase of Flight Cruise
Damage Unknown
Fatalities 0
Injuries 0
Events Conflict - loss of separation,Electrical problem

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