Incident at 25 N of Calgary, AB


1997-09-18: NTM 440 was inbound to Calgary from Edmonton City Centre airport, and about 25 miles north, when the pilot reported sparks emanating from one of the propellors. The a/c was vectored for a close approach to Runway 28 and landed without further incident at 0218Z. The pilot was offered the ERS, but declined. The crew were operating the propellor anti-ice system at the time of the incident, and a post-landing inspection of the propellor showed that the electrical lead going to the anti-ice boot had unbonded from the propellor.This resulted in the lead being torn off while power was being applied, which caused the sparking. Further examination also revealed the bonding glue was brittle and did not secure the lead as it should have. The company is replacing the lead and adhesive, and will return the a/c to service when completed.


CADORS Number 1997C0645
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1997-09-18 - 02:04
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, 25 N 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 FTCE | Flightaware (Registration) | Flightaware (Tracking) | AvHerald
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Operator NORTH AMERICAN AIRLINES LTD. (4696) Commercial
Make  Silhouette image of PIPER
Model  Silhouette image of PA31
Year Built 1969
Engine Type Reciprocating
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number NTM 440
Flight Rule
CARS Subpart
Phase of Flight Cruise
Damage Unknown
Fatalities 0
Injuries 0
Events Electrical problem

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