Incident at 51n/50w


1996-06-29: ACA840 was on a flight from Toronto to Manchester when the crew reported a possible oil leak in the right engine. The quantity indicator showed a decrease in oil pressure and at one point started to fluctuate by about 3 to 4 litres. The indication then stabilized at 10 litres (23 litre capacity). The aircraft was diverted to St John's as a precaution where it landed safely, no assistance required. Maintenance topped up the oil tank with 6 litres of oil and verified that there weren't any leaks present. The oil consumption rate was also within limits so the aircraft was returned to service. Maintenance reported that there has been a number of faulty quantity indicating probes on this model aircraft and that the probe on C-GAVA would be replaced upon return to base. TSB closed.


CADORS Number 1996A0701
Occurrence Type Incident
Reported By
Occurred At 1996-06-29 - 04:59
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Canada, Gander Oceanic, Atlantic Region, 51n/50w
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By
Categories System/component failure or malfunction [powerplant]

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration GAVA | Flightaware (Registration) | Flightaware (Tracking) | AvHerald
Foreign Registration
Country of Registration
Occurrence Type Incident
Operator AIR CANADA (5262) Commercial
Make  Silhouette image of BOEING
Model 767
Year Built
Engine Type
Engine Make
Engine Model
Gear Type
Private No
Amateur Built No
Flight Number
Flight Rule
CARS Subpart
Phase of Flight Unknown
Damage Unknown
Fatalities 0
Injuries 0
Events Engine oil problem

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