Incident at vicinity of 52N 50W


2014-12-16: A Delta Airlines Airbus A330-300 (DAL32) from Atlanta, GA (KATL) to Amsterdam, The Netherlands (EHAM) at FL360 on an oceanic reroute, reported 52N 50W at 0448Z and indicated 52N 40W as the next position whereas 54N 40W was the expected position. Gander Ocean asked the pilot to confirm 40W and DAL32 verified on course to 54N 40W. Within 5 minutes of the 40W coordinate confirmed, Gander received two additional periodic reports indicating DAL32 was off course. DAL32 was asked again to confirm 40W. Pilot once again confirmed 54N 40W. Within another 5 minutes, Gander Ocean advised DAL32 of another position report error and asked if they were headed to 52N 40W. Pilot indicated they had a NAV error and advised they were turning back to 54N 40W. A loss of longitudinal separation occurred with two other aircraft, one, an Air France Boeing 777 200 (AFR689) from Atlanta (KATL) to Paris, FRA (LFPG) on the adjacent track south of DAL32's cleared track, and one, a Delta Air Lines Boeing 767 400 (DAL5) from New York, NY (KJFK) to London, UK (EGLL) on DAL32's cleared track but joining at 40W after deviation discovered.


CADORS Number 2013A0821
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2013-08-29 - 04:49
Day or Night? Night-time
Fatalities 0
Injuries 0
Aerodrome ID
Aerodrome Name
Geographic Location Gander Oceanic, Atlantic Region, vicinity of 52N 50W
TSB Occurrence Number
TSB Class of Investigation
AOR Number 165586-V1
Reported By NAV CANADA
Categories Navigation Errors,Airprox/TCAS alert/loss of separation/(near) midair collisions

Aircraft Details (3 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
 Silhouette image of Aeroplane
 Silhouette image of Aeroplane
Canadian Registration
Foreign Registration
Country of Registration French Republic the United States of America the United States of America
Occurrence Type Incident Incident Incident
Operator AIR FRANCE (5421) Commercial DELTA AIR LINES, INC. (624) Commercial DELTA AIR LINES, INC. (624) Commercial
Make  Silhouette image of BOEING
 Silhouette image of AIRBUS
 Silhouette image of BOEING
Model 777 200 A330-300 767 400
Year Built
Engine Type Turbo fan Turbo fan Turbo fan
Engine Make
Engine Model
Gear Type Land Land Land
Private No No No
Amateur Built No No No
Flight Number AFR689 DAL32 DAL5
Flight Rule IFR IFR IFR
CARS Subpart 701 701 701
Phase of Flight Cruise Cruise Cruise
Damage No Damage No Damage No Damage
Fatalities 0 0 0
Injuries 0 0 0
Events Conflict - loss of separation Conflict - loss of separation,Navigation error Conflict - loss of separation

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