July 14, 2005

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

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

November 6, 2003

Incident at HALIFAX / STANFIELD INTL NS (CYHZ)

DAL127 a Boeing 767 from Barajas to Kennedy diverted to Halifax due to a medical emergency. An ambulance was requested. The aircraft landed at 1859Z.

May 8, 1999

Incident at Gander Oceanic Area

DAL127 B767 declared medical emergency, diverted to St. John's and landed at 1846Z. NIL TSB