Incident at WINNIPEG / JAMES ARMSTRONG RICHARDSON INTL MB (CYWG) (Conflict - loss of separation, ATS operating irregularity)


2003-05-07: TGO 988, a Beech King Air 90, was working IFR about 20 NM northwest of Winnipeg while C-FEMA, a Cessna Citation departed Winnipeg for Edmonton. Separation between the two a/c was reduced to 2.5 miles before correcting vectors were issued and the 3 mile standard was re-established. The Departure Controller reportedly misjudged the radar separation due to having recently changed the radar ranges.
2003-05-08: UPDATE TSB reported that an ATC operating irregularity and loss of separation occurred 20 NM northwest of Winnipeg, involving TGO 988, a Transport Canada Beech 90, and C-FEMA, a Government of Manitoba Cessna 550. Transport 988 was doing airwork in the northwest practise area at 6,000 feet. C-FEMA was en route from Winnipeg to Edmonton and was vectored through TGO 988's altitude with 2.25 NM lateral separation, in an area where 3 NM is required. The aircraft were under radar control and there was no risk of collision. ANS and Airspace reported that NAV CANADA will hold an Operational Safety Investigation concerning this occurrence.


CADORS Number 2003C0552
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2003-05-07 - 12:59
Day or Night? Day-time
Fatalities 0
Injuries 0
Aerodrome ID CYWG
Geographic Location Manitoba, Canada, North America, Prairie and Northern Region, 20 NM NW of Winnipeg
TSB Occurrence Number A03C0105
TSB Class of Investigation Class 5
AOR Number 29061
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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