Incident at HALIFAX / STANFIELD INTL NS (CYHZ) (Conflict - loss of separation)

Summary

2001-08-10: ARN 791 Climbed to 12000 Feet ( or 12200, depending on which Altimeter QM or HZ was being used ) MAL 8062 was given descent clearance to 13000 feet .(and descended to 12700 or 12800 depending again as to which altimeter was being used ). Spacing decreased to 1.5 miles and 700 feet in airspace requiring either 3 miles or 1000ft. TSB Assessing .
2001-08-20: TSB Update August 10, 2001. A01A0097: The IFR Morningstar Express (C-GBWH - a Boeing 727 on descent from Moncton to Halifax, had been cleared to descend to 13,000 feet. The aircraft descended to 13,000, and the crew called level. The aircraft subsequently dipped below 13,000 and conflicted with an opposite direction IFR Dash 8 aircraft, activating TCAS alerts on the aircraft. Spacing was decreased to 1.5 miles laterally and 700 feet vertically in airspace where either 3 miles or 1000 feet is required.

Details


CADORS Number 2001A0496
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2001-08-09 - 16:20
Day or Night? Day-time
Fatalities 0
Injuries
Aerodrome ID CYHZ
Aerodrome Name HALIFAX / STANFIELD INTL NS (CYHZ)
Geographic Location Nova Scotia, Canada, North America, Atlantic Region, Halifax International Airport
TSB Occurrence Number A01A0097
TSB Class of Investigation Class 5
AOR Number 16988
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions
Events Conflict - loss of separation


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