Incident at Calgary, AB (Weather - visibility, Electrical problem)


1999-03-11: The local weather in Calgary on the evening of March 10 was very poor with visibilities from 1/8 to 1/4 of a mile in freezing fog, and single runway operations meant reduced flow rates. Beginning at 0411Z, several power bumps caused the runway lights to fail and the trouble was traced to a City of Calgary substation which affected a portion of the city. Power was not interrupted long enough to activate the airport backup diesel generator, so as a precaution, an electrician was dispatched to force the runway lights onto diesel power until the substation problem was resolved. There were no missed approaches due to the runway lights being unavailable. OPI - System Safety


CADORS Number 1999C0172
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1999-03-10 - 04:11
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Calgary, AB
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By NAV CANADA
Categories System/component failure or malfunction [non-powerplant],Other
Events Weather - visibility,Electrical problem

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