Incident
at 15NM NW REGINA INTL SK (CYQR)
(ATS operating irregularity)
UPDATE: TSB Report#A17C0137: C-GEWJ, a Boeing 737-600 aircraft operated by WestJet, was conducting flight WJA269 from Regina Intl, SK (CYQR) to Calgary Intl, AB (CYYC). 156119, a Harvard II aircraft operated by the Department of National Defence, was conducting training flight CBRA43 from Moose Jaw/Air Vice Marshal C.M. McEwen, SK (CYMJ) to Yorkton Municipal, SK (CYQV) and return to CYMJ. During the departure from CYQR, WJA269 was instructed to climb to FL280 on a converging heading with CBRA43 who was level at FL150. ATC instructed WJA269 to climb to FL140 until clear of the conflicting traffic. A loss of separation occurred when the distance was reduced to 2.8 nautical miles laterally, where 5 nautical miles is required.
A loss of separation occurred when a WestJet Boeing 737-600 (WJA269) on a flight from Regina, SK (CYQR) to Calgary, AB (CYYC) was instructed to climb to FL280 while on a converging heading with a Government of Canada, Department of National Defence Raytheon CT-156 (TEX2) (CBRA43) on a flight from Moose Jaw, SK (CYMJ) and landing at Moose Jaw, SK (CYMJ) level at 15 000 feet.