Incident at Edmonton, AB


1997-12-18: LifeGuard was on a medevac flight from Salt Lake City to Red Deer, and on descent, the crew reported that they were having a problem with elevator control. They requested clearance to Edmonton (YEG), and when the a/c was descending from 9,000 feet to 5,000 feet about 10 miles south of YEG, the crew reported that the problem had been resolved. The a/c then flew to it's original destination. OPI - System Safety UPDATE The problem arose when the crew disconnected the autopilot on the descent. When the a/c descended to a lower altitude, the crew found that they could then move the elevator, although with some difficulty. Examination of the a/c on the ground revealed a half cup of water in the clutch mechanism at the bottom of the pitch trim servo. The operator believes that the water froze at altitude and jammed the elevator control system. The source of the water has not been determined. The water was drained and the a/c put back into service.


CADORS Number 1997C0846
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1997-12-13 - 01:00
Day or Night? Night-time
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Edmonton, 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 the United States of America
Occurrence Type Incident
Operator Commercial
Make  Silhouette image of LEARJET
Model 25B
Year Built
Engine Type Turbo fan
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number
Flight Rule
CARS Subpart
Phase of Flight Descent
Damage Unknown
Fatalities 0
Injuries 0
Events Flight control systems (ailerons, rudder, rotors, flaps, main, tail)

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