Incident at 8 NM NE of Calgary, AB (Conflict - loss of separation, ATS operating irregularity)


1999-05-03: CDN 960, a B737, departed from Runway 34 at Calgary, and the Departure Controller issued the crew a heading of 090 degrees and clearance to FL 250. It was intended that CDN 960 would pass in front of ACA 270, which was inbound from the north for Runway 28. As the distance between the two a/c closed, the Departure Controller vectored CDN 960 to the right to a heading of 110 degrees and the Arrival Controller vectored ACA 270 left to 110 degrees to parallel CDN 960. Lateral separation was reduced to 2.2 miles and less than 1,000 feet vertical, when 3 miles is the required standard. OPI - ANS and Airspace


CADORS Number 1999C0314
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 1999-05-01 - 13:00
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, 8 NM NE of Calgary, AB
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions,ATM/CNS
Events Conflict - loss of separation,ATS operating irregularity

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