Incident at Gander Oceanic (Conflict - potential, Conflict - loss of separation, Communication navigation surveillance/air traffic system)

Summary

2005-07-15: AJM001 Airbus 340-300 enroute from Montego Bay (MKJS) to London (EGLL). Estimate passed to Gander via New York. Gander approved the flight at 35,000 ft. (aircraft routing NY to AZ to QX to PK) DAL127 Boeing 767-300 enroute from Madrid (LEMD) to New York (KJFK). Estimate received by Prestwick to Gander at 33,000 ft. Due to HF communication problems, the non availability of other forms of communications(i.e. SATPHONE, CPDLC) or aircraft relays, New York and Santa Maria were unable to amend AJM001's altitude from 33,000 to 35,000. Prestwick was also unable to amend DAL127 altitude due to the same communication difficulties. The result was less than the minimum longitudinal oceanic separation between the aircraft prior to vertical separation being achieved. TSB Case Closed

Details


CADORS Number 2005A0470
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2005-07-14 - 12:03
Day or Night? Day-time
Fatalities 0
Injuries 0
Aerodrome ID
Aerodrome Name
Geographic Location Gander Oceanic, Atlantic Region, Gander Oceanic
TSB Occurrence Number A05A0088
TSB Class of Investigation Class 5
AOR Number 58253-V1
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions,ATM/CNS
Events Conflict - potential,Conflict - loss of separation,Communication navigation surveillance/air traffic system


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