Event Details

Title:Loss of separation, Boeing 737-300, D-ABEK and Gulfstream IV, N77SW
Micro summary:Loss of separation on descent between a Boeing 737 and Gulfstream IV.
Event Time:1999-02-26 at 0830 UTC
File Name:1999-02-26-UK.pdf
Publishing Agency:Aircraft Accident Investigation Board (AAIB)
Publishing Country:United Kingdom
Report number:EW/C99/2/6
Site of event:Near Lambourne VOR
First AirplaneSecond Airplane
Departure:Munich International Airport, Munich, GermanyAtatürk International Airport, Yesilkoy, Turkey
Destination:London Heathrow Airport, London, EnglandFarnborough Airfield, Farnborough, England
Airplane Type(s):Boeing 737-300Gulfstream IV
Flight Phase:DescentDescent
Type of flight:CorporateCorporate
Serious Injuries:00
Other Injuries:00
Executive Summary:This incident involved a loss of separation, in Class A controlled airspace IMC, between a Boeing 737-300 (B737) and a Gulfstream IV (GIV). The B737 was inbound to London Heathrow Airport from Munich and the GIV was inbound to Farnborough Airport from Istanbul. The two aircraft were under the control of different controllers. The loss of separation generated an ACC Short Term Conflict Alert (STCA) and both aircraft received Traffic Alert and Collision Avoidance System (TCAS) Resolution Advisories (RA). Separation was regained after a TCAS manoeuvre by the B737 and a change of heading by the GIV.
Learning Keywords:Operations - Airspace - Air Proximity
Operations - Airspace - Air Traffic Control
Operations - Airspace - TCAS


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