Incident at WINNIPEG / JAMES ARMSTRONG RICHARDSON INTL MB (CYWG) (Conflict - loss of separation, ATS operating irregularity)


2003-04-23: WJA 107, a B737-200, and C-FCNR, a Lear 60, both departing Winnipeg, had been delayed approximately 10 minutes for a medical emergency landing on Runway 31. The Tower Controller departed WJA 107 on Runway 13 and then approximately 1.5 minutes later departed C-FCNR. WJA 107 did not climb as expected and C-FCNR overtook him, resulting in a loss of separation.
2003-04-29: UPDATE TSB reported that the Boeing 737-200, C-GWJE operated by Westjet Airlines as WJA 107 was cleared for takeoff on Runway 13, and a Learjet 60, C-FCNR operated by Canadian National Railway Company, was cleared to position and hold on Runway 13. After WJA 107 took off, C-FCNR was cleared for takeoff. Both aircraft were operating under IFR in VMC, and their departures were expedited due to delays resulting from a landing medevac aircraft. The performance differential between the aircraft was greater than the Controller expected, and the spacing between them decreased to 1.7 NM during the departure. The separation standard in effect for automatic departure release between Winnipeg Tower and Winnipeg Departure was 3 NM. The crew of C-FCNR had visual contact with WJA 107 throughout the departure, and although a loss of separation occurred there was no risk of collision.
2003-04-30: UPDATE ANS and Airspace reported that NAV CANADA will be conducting an OSI into this occurrence.


CADORS Number 2003C0495
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2003-04-22 - 21:12
Day or Night? Day-time
Fatalities 0
Aerodrome ID CYWG
Geographic Location Manitoba, Canada, North America, Prairie and Northern Region, Winnipeg
TSB Occurrence Number A03C0098
TSB Class of Investigation Class 5
AOR Number 28804
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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