Incident at Approx. 50 miles north of Calgary, AB


1999-08-16: The aircraft had been cleared to 16,000 feet but descended to 15,300. The controller recleared the aircraft to 15,000 feet and descended to 14,700. The controller reminded the pilot the cleared altitude was 15,000 feet and the aicraft climbed to 17,000 feet at which time the pilot informed the controller that they were experiencing computer problems. IFR separation with any other aircraft was never infringed upon. Discussed the events with the Captain after the aircraft had landed who indicated he had reported the difficulties and the aircraft was being checked over before going to Europe. OPI: Maintenance & Manufacturing


CADORS Number 1999C0667
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1999-08-08 - 02:34
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Approx. 50 miles north of Calgary, AB
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 Canada
Occurrence Type Incident
Operator AIR CANADA (5262) Commercial
Make  Silhouette image of AIRBUS
Model A340
Year Built
Engine Type
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number ACA850
Flight Rule
CARS Subpart
Phase of Flight Cruise
Damage Unknown
Fatalities 0
Injuries 0
Events Flight control systems (ailerons, rudder, rotors, flaps, main, tail)

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