Incident at Stephenville NFLD (Aerodrome - visual aids)


1997-02-18: Visibility at Stephenville at 1418Z was 1/2 mile and decreased to 3/8 at 1426Z. Pilot requested lights on level 5 intensity. RVR with lights on intensity 5 was 2000 feet. Aircraft reported final at 1428Z. Lights were inadvertantly reset to level 1 due to radio transmissions. Aircraft advised missed approach at 1436Z. Lights were reset to level 5. When requesting pilot's intentions, lights were again reset to level 1 intensity. It appears that the problem arises with short calls of the form "callup-reply-response". The lighting setup at Stephenville is when level 4 intensity is obtained using the ARCAL, St. John's FSS can switch lights to level 5 intensity. Three further key clicks on the ARCAL will reset the lighting to low, level 1 intensity.


CADORS Number 1997A0086
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1997-02-15 - 14:31
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Newfoundland and Labrador, Canada, North America, Atlantic Region, Stephenville NFLD
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By NAV CANADA
Categories Aerodrome
Events Aerodrome - visual aids

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