Event Details

Title:AIRPROX, Airbus A330 C-GGWD, Airbus A340 TC-JDN
Micro summary:Proximity incident between this Airbus A340 and A330.
Event Time:2000-10-02 at 1422 UTC
File Name:2000-10-02-UK.pdf
Publishing Agency:Aircraft Accident Investigation Board (AAIB)
Publishing Country:United Kingdom
Report number:EW/C2000/10/2
Site of event:North Atlantic Track E
Latitude/Longitude:58°28.4'N 016°46.1'W
First AirplaneSecond Airplane
Departure:LondonAtatürk International Airport, Yesilkoy, Turkey
Destination:OttawaJohn F. Kennedy International Airport, New York, USA
Airplane Type(s):Airbus A330Airbus A340
Flight Phase:CruiseCruise
Operator(s):Canada 3000Turkish Airlines
Type of flight:RevenueRevenue
Serious Injuries:00
Other Injuries:00
Executive Summary:The A340 was en-route from Istanbul to New York and the A330 was en-route from London to Ottawa. Both aircraft were assigned to North Atlantic (NAT) Track E with an entry point into Oceanic Airspace of 58°North 10°West and a next reporting point of 59°N 20°W. Both aircraft were cleared by the Scottish Oceanic Area Control Centre to cruise at Mach 0.82 with the A340 at Flight Level (FL) 360 and the A330 1,000 feet above at FL 370. The vertical separation distance of 1000 feet was in accordance with RVSM (Reduced Vertical Separation Minima) used by approved aircraft within NAT MNPS (Minimum Navigation Performance Specification) Airspace. The objective of RVSM is to reduce the vertical separation of aircraft flying between FL 290 and FL 410, inclusive, from the previous 2,000 feet to 1,000 feet, in order to improve fuel efficiency and increase traffic capacity. At the time of the incident each aircraft was using SELCAL (Selective Calling) but on different HF radio frequencies. They were beyond radar coverage but both crews were monitoring the common VHF radio frequency used for air to air messages. Both aircraft had a limiting speed at their respective flight levels of 0.86 Mach.
Learning Keywords:Operations - Airspace - Air Proximity
Operations - Airspace - Air Traffic Control
Operations - Airspace - TCAS


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