Incident at ISLAND LAKE MB (CYIV) (Conflict - loss of separation, ATS operating irregularity)


2001-05-24: WSG 701, a Pilatus PC-12 was enroute from Island Lake to Winnipeg and the pilot was requesting FL 240. WSG 701 departed Island Lake and was cleared through FSS to maintain FL 220 and to contact Winnipeg ACC passing 18,000 feet. PAG 203, a Metro II, was enroute from Winnipeg to Gods Narrows and was northbound at FL 190. The North Low Controller recognized the confliction and requested that FSS turn WSG 701 over to the center frequency early. PAG 203 was cleared to FL 210 and when WSG 701 called climbing through FL 180 on centre frequency, the clearance was amended to FL 180. The preliminary investigation indicates that a loss of separation occurred when WSG 701 climbed through 18,000 with PAG 203 opposite direction and not reported out of FL 200. WSG 701 reported level FL 180 and PAG 203 reported through FL 203 with 43 DME opposite direction. The preliminary investigation is ongoing.
2001-05-28: UPDATE ANS and Airspace reported that NAV CANADA will hold a Fact Finding Board.
2001-06-06: UPDATE TSB reported that the Pilatus PC-12 operated by Wasaya Airways as flight WSG 701, had departed Island Lake for Winnipeg on an IFR flight plan, and was initially climbing in uncontrolled airspace below FL 180 without a clearance. At 1002 CDT, the Winnipeg ACC North Low Sector Controller relayed the IFR clearance through the Winnipeg FSS to WSG 701 to maintain FL 220 with an instruction to contact the Winnipeg center when climbing through FL 180. The Fairchild SA-226-TC operated by Perimeter Airlines as flight PAG 203, was northbound IFR from Winnipeg to God's Lake Narrows at FL 190, also under control of the North Low Controller. A clearance was issued to WSG 701 for FL 220. At 1007, PAG 203 was cleared to climb to FL 210. Seconds later, WSG 701 called the North Low Controller and reported climbing through FL 180. The Controller immediately instructed WSG 701 to maintain FL 180, and at 1010, WSG 701 reported level at FL 180 at 33 DME south of Island Lake. Ten seconds later, PAG 203 reported climbing through FL 203 at 76 DME south of Island Lake. The standard in effect was 10 minutes longitudinal or 1,000 feet vertical separation. A separation plan was not in effect before the Controller established contact with WSG 701; safety was not assured and a loss of separation occurred.


CADORS Number 2001C0514
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2001-05-23 - 15:08
Day or Night? Day-time
Fatalities 0
Aerodrome ID CYIV
Aerodrome Name ISLAND LAKE MB (CYIV)
Geographic Location Manitoba, Canada, North America, Prairie and Northern Region, 20 NM SW of Island Lake
TSB Occurrence Number A01C0094
TSB Class of Investigation Class 5
AOR Number 15390
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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