Incident at GANDER INTL NL (CYQX) (TCAS alert, Conflict - potential, Conflict - loss of separation, ATM - other)


2003-02-03: At 0325Z an eastbound C135 enroute from Columbus to Geilenkirchen at 53N 50W at Flight Level 320 reported receiving a TCAS RA instructing him to descend at 2000 ft per min. The A/C complied with the RA and descended approximately 1000 ft, then showing no traffic around them, the A/C climbed back to FL320. Subsequent conversation with the pilot confirmed the RA had shown another aircraft at the same altitude, but that the whole process had only taken approximately 1 minute. There was no known traffic at FL320 OR FL330. The descent did however cause a conflict with a Westbound C141 enroute from Frankfurt to Bangor at FL310 routing 55/040 0249Z 52/050 0354Z. This was resolved with the return of the C135 to FL320.


CADORS Number 2003A0066
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2003-02-03 - 03:25
Day or Night?
Fatalities 0
Aerodrome ID CYQX
Aerodrome Name GANDER INTL NL (CYQX)
Geographic Location Newfoundland and Labrador, Canada, North America, Atlantic Region, Gander Oceanic Airspace
TSB Occurrence Number
TSB Class of Investigation
AOR Number 27372
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions,ATM/CNS
Events TCAS alert,Conflict - potential,Conflict - loss of separation,ATM - other

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