Incident at EDMONTON CITY CENTRE / BLATCHFORD AB (CYXD) (Conflict - loss of separation)


2001-03-07: UPDATE TSB reported that PE 56 was cleared to descend to 8,000 feet on an altimeter setting of 29.38 inbound to Edmonton City Centre Airport. SN 107 was departing City Centre Airport and had been cleared to climb to 7,000 feet. Both crews had their respective traffic visually. The co-pilot of PE 56 noticed that separation with SN 107 appeared marginal, and cross-checked the right hand altimeter, which indicated descent through 7,500 feet. A climb was initiated, and it was noted that the CaptainĀ“s altimeter had been set to 30.38. PE 56 corrected back to 8,000 feet just after SN 107 reported visual passage. No evasive action was taken by either aircraft. Separation was reduced to 400 feet vertically and 1/4 mile laterally where 1,000 feet vertical or 3 miles lateral separation was required.
2001-03-01: The pilot of PE 56, a Pilatus PC-12 inbound to City Centre Airport on an IFR flight from Grande Prairie, was cleared to descend to 8,000 feet. Traffic was SN 107, another PC-12 IFR outbound from City Centre to Rainbow Lake and cleared to 7,000 feet. The two aircraft passed each other with 400 feet vertical and 1/4 mile lateral separation because the inbound pilot had an incorrect altimeter setting. The actual altimeter setting was 29.38 and pilot had it set to 30.08. No evasive action was taken by either aircraft and both had been given traffic earlier because they would pass each other. The outbound aircraft reported visual with the inbound well back of passing but the inbound did not mention having visual with the outbound. The separation standard for this area is either 1,000 feet vertical or 3 miles lateral. TSB will be contacting the operator.


CADORS Number 2001C0204
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2001-03-01 - 01:30
Day or Night? Day-time
Fatalities 0
Aerodrome ID CYXD
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Edmonton
TSB Occurrence Number A01W0047
TSB Class of Investigation Class 5
AOR Number 14186
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions
Events Conflict - loss of separation

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