Incident at 350 NM NE of Winnipeg, MB


1999-03-02: BAW 283, a B747, was enroute from Heathrow to Los Angeles and was about 350 miles northeast of Winnipeg when the crew informed ACC of multiple electrical failures on board. The failures were described as non-threatening but the crew indicated that they were going to divert to Winnipeg. Approximately 20 minutes later, the crew advised that they had decided to continue to destination. OPI - System Safety UPDATE TSB reported that the crew observed a circuit breaker pop, followed by multiple EICAS warnings and status messages. On company engineering advice, the circuit breaker was re-set, but it immediately popped again. The Captain planned a precautionary diversion to Winnipeg, but about 45 minutes later with engineering advice, the breaker was re-set again and this time it remained set. The EICAS warning messages disappeared, so the Captain elected to continue to destination. After arrival in Los Angeles, circuit breaker # 8839 was replaced and two breakers, K1 and K6 were interchanged to resolve the problem.


CADORS Number 1999C0133
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1999-02-25 - 19:10
Day or Night? Day-time
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Manitoba, Canada, North America, Prairie and Northern Region, 350 NM NE of Winnipeg, MB
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By NAV CANADA
Categories System/component failure or malfunction [non-powerplant]

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration
Foreign Registration
Country of Registration the United Kingdom of Great Britain and Northern Ireland
Occurrence Type Incident
Operator Commercial
Make  Silhouette image of BOEING
Model 747 436
Year Built
Engine Type Turbo fan
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number BAW 283
Flight Rule
CARS Subpart
Phase of Flight Cruise
Damage Unknown
Fatalities 0
Injuries 0
Events Electrical problem

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