Incident at 50 NM N of The Pas, MB (ATS operating irregularity)


1999-02-11: C-GYQD, a Piper Navajo, departed Grace Lake on an IFR flight plan for Pukatawagan at 1402Z and the pilot was cleared to 8,000 feet. CDN 634, a B737, departed Thompson for Flin Flon at 1410Z, and the crew was cleared to climb to 9,000 feet. At 1424Z, the pilot of C-GYQD was assigned, and subsequently reported established on the 347 degree radial of The Pas VOR. The Sector Controller was planning to use geographical separation using radials for the two a/c, but in calculating his radial assignment to CDN 634, he inadvertently added instead of subtracting, which resulted in a misapplication of the standard when approach clearance was issued to the crew. Radar data analysis did not provide any useful information because the event occurred a considerable distance from the radar source. The incident came to light a couple of hours after it occurred when the pilot of C-GYQD called ACC to question his assigned position relative to the B737. OPI - ANS and Airspace UPDATE ANS and Airspace reported that NavCanada will conduct a Fact Finding Board concerning this occurrence.


CADORS Number 1999C0096
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1999-02-08 - 14:25
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Manitoba, Canada, North America, Prairie and Northern Region, 50 NM N of The Pas, MB
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By NAV CANADA
Categories ATM/CNS
Events ATS operating irregularity

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