Incident at 20 NM N of PRINCE ALBERT (GLASS FIELD) SK (CYPA)
2003-04-04: WEW 731, a HS 748, was cleared down to 7,000 feet awaiting an approach at Prince Albert (YPA) from the north. TW 602, a Cessna 441, was a departure from YPA cleared to 6,000 feet going north. When the target for the departing flight was first seen on radar, it was descending from 6,600 feet. The crew confirmed that they had exceeded the cleared altitude but were returning to 6,000 feet. The ATC separation standard being used was procedural vertical separation until radar coverage could be established and procedural separation was lost when TW 602 climbed above the cleared altitude. When the Controller first observed the departing flight, the two aircraft were approximately 20 NM converging opposite direction. Vertical was re-established when the two aircraft were approximately 15 NM apart and converging.
2003-04-08: UPDATE TSB reported that an ATC operating irregularity occurred approximately 20 nautical miles north of Prince Albert, Saskatchewan. A West Wind Aviation HS 748, C-FQVE, was cleared down to 7,000 feet, anticipating an approach clearance to YPA from the north. A Transwest Airlines Cessna 441, C-GCTA, was cleared on departure to climb to 6,000 feet, flying north from YPA. The two aircraft were approximately 20 nautical miles apart, when the radar target for C-GCTA activated and indicated that C-GCTA was descending from 6,600 feet. The required vertical separation was re-established when C-GCTA reached 6,000 feet, and the two aircraft were approximately 15 nautical miles apart.
|Occurred At||- 00:10|
|Day or Night?|
|TSB Occurrence Number|
|TSB Class of Investigation|
Aircraft Details (2 aircraft)
|Canadian Registration||| Flightaware (Registration) | Flightaware (Tracking) | AvHerald|
|Country of Registration|
|Phase of Flight|