Incident at GANDER INTL NL (CYQX) (Conflict - loss of separation, Communication navigation surveillance/air traffic system, ATS operating irregularity, ATM - other)

Summary

2005-11-04: Eastbound AAL56 entering Gander Oceanic Airspace from Santa Maria's Oceanic Airspace was restricted by Gander to cross 4500N at FL380. Santa Maria was unable to issue approrpiate clearance due to communication problems. Flight entered Gander's airspace at FL370 and was traffic with eastbound IBE6252. Santa Maria advised Gander they were unable to issue the clearance at approximately the time the flight passed 4500N. Once AAL56 entered Gander's airspace, the Gander Oceanic controller was able to issue a clearance for the aircraft to climb to FL380. Separation was affected as soon as AAL56 crossed 4500N. The aircraft had 10 minutes longitudinal separation at point where projected routes crossed, instead of the required 15 minutes. TSB Case Closed A05A0147.
2005-11-07: TSB Update: A05A0147: Eastbound AAL56 entering Gander Oceanic Airspace from Santa Maria's Oceanic Airspace was restricted by Gander to cross 4500N at 38,000 ft. Santa Maria was unable to issue appropriate clearance due to communication problems. Santa Maria advised Gander they were unable to issue the clearance at approximately the time the flight passed 4500N 04500W. AAL56 entered Gander's airspace (4500N 4500W) at 37,000 ft and was traffic for eastbound IBE6252. The aircraft had 10 minutes longitudinal separation instead of the required 15 minutes. Once AAL56 entered Gander's airspace, the Gander Oceanic controller was able to issue a clearance for the aircraft to climb to 38,000 ft.

Details


CADORS Number 2005A0773
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2005-11-04 - 06:15
Day or Night? Day-time
Fatalities 0
Injuries 0
Aerodrome ID CYQX
Aerodrome Name GANDER INTL NL (CYQX)
Geographic Location Newfoundland and Labrador, Canada, North America, Atlantic Region, Gander Oceanic
TSB Occurrence Number A05A0147
TSB Class of Investigation Class 5
AOR Number 62312-V1
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions,ATM/CNS
Events Conflict - loss of separation,Communication navigation surveillance/air traffic system,ATS operating irregularity,ATM - other


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