Incident at 5206N 03902W


2015-09-15: After passing 40W, a United Airlines Boeing 757 224 (N17139/ UAL25) from Newark, NJ (KEWR) to Shannon, Ireland (EINN) descended from FL350 to FL347 to resolve a traffic alert and collision avoidance system (TCAS) resolution advisory (RA). Traffic in the vicinity was an Air Canada Boeing 777-333ER (C-FNNW/ ACA864) from Montreal, QC (CYUL) to London, UK (EGLL) at FL360, approximately 5 minutes in trail. ACA864 was queried and reported a continuous smooth ride. No other traffic in the vicinity.


CADORS Number 2015A0821
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2015-09-04 - 03:26
Day or Night? Night-time
Fatalities 0
Injuries 0
Aerodrome ID
Aerodrome Name
Geographic Location Gander Oceanic, Atlantic Region, 5206N 03902W
TSB Occurrence Number
TSB Class of Investigation
AOR Number 192232-V1
Reported By NAV CANADA
Categories Airprox/TCAS alert/loss of separation/(near) midair collisions

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration
Foreign Registration
Country of Registration the United States of America
Occurrence Type Incident
Operator UNITED AIRLINES, INC. (4881) Commercial
Make  Silhouette image of BOEING
Model 757 224
Year Built 2000
Engine Type Turbo fan
Engine Make ROLLS ROYCE - GY
Engine Model RB-211
Gear Type Land
Private No
Amateur Built No
Flight Number UAL25
Flight Rule IFR
CARS Subpart 701
Phase of Flight Cruise
Damage No Damage
Fatalities 0
Injuries 0
Events TCAS alert

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