Incident at La Ronge, Saskatchewan


1996-05-14: C-FPGE, a DHC6 was returning to La Ronge with a crew of two when the pilot noted that the elevator control system was stiffer than normal. The crew coordinated their activities with company maintenance personnel and landed safely at La Ronge approximately ten minutes later. Following the occurrence it was determined that a drive gear bearing in one of the autopilot servo motors had worn, causing the drive gear on the auto pilot clutch to seize. The autopilot system had been electrically disconnected prior to this flight while awaiting scheduled maintenance. However, despite this action, there was still a mechanical connection between the autopilot servo motors and the aircraft's main control cables through bridle cables. When the clutch seized, an unusual force was transmitted to the main control cables through the bridle cables. Company maintenance personnel will be raising a service difficulty report (SDR) to Transport Canada on this occurrence.


CADORS Number 1996C0149
Occurrence Type Incident
Reported By
Occurred At 1996-05-14 - 19:19
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Saskatchewan, Canada, North America, Prairie and Northern Region, La Ronge, Saskatchewan
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By
Categories System/component failure or malfunction [non-powerplant]

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration FPGE | Flightaware (Registration) | Flightaware (Tracking) | AvHerald
Foreign Registration
Country of Registration
Occurrence Type Incident
Operator ATHABASKA AIRWAYS LTD. (1235) Commercial
Make  Silhouette image of DEHAVILLAND
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 Flight control systems (ailerons, rudder, rotors, flaps, main, tail)

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