Event Details

Title:Near-miss, Boeing 747-436, G-BNLY and Airbus A321, G-MIDF
Micro summary:A low-altitude missed approach by a 747 causes a threat to an A321 ready for takeoff.
Event Time:2000-04-28 at 1405 UTC
File Name:2000-04-28-UK.pdf
Publishing Agency:Aircraft Accident Investigation Board (AAIB)
Publishing Country:United Kingdom
Report number:EW/C2000/4/6
Site of event:Runway 09 Right at London Heathrow
Latitude/Longitude:5128.7' N, 00027.7'W
First AirplaneSecond Airplane
Departure:UnknownLondon Heathrow Airport, London, England
Destination:London Heathrow Airport, London, EnglandUnknown
Airplane Type(s):Boeing 747-436Airbus A321
Flight Phase:LandingTaxi
Operator(s):British AirwaysBMI British Midland Airways
Type of flight:RevenueRevenue
Serious Injuries:UnknownUnknown
Other Injuries:UnknownUnknown
Executive Summary:The incident occurred at London Heathrow Airport when Runway 09 Right (09R) was being used for take off and Runway 09 Left (09L) was being used for landing. At the time, the ATC controller with responsibility for Runway 09R was a mentor who was supervising a trainee. There was also a local procedure whereby aircraft could land on Runway 09R if traffic conditions allowed. A number of aircraft had been given conditional line-up clearance for Runway 09R and an arriving aircraft ('Speedbird Six') was approaching for a landing on Runway 09R.

With one aircraft ('Midland One November Zulu') still on the runway for take off, 'Speedbird Six' was instructed to go-around at a late stage of its approach. During this procedure, the aircraft performing the go-around descended to 118 feet radio height above the runway; the aircraft on the runway for departure had a tail fin height of 38 feet 7 inches.

The investigation revealed the following causal factors:

The ATC mentor allowed the situation to develop to the point where 'Speedbird Six' could not be safely integrated with the departure of 'Midland One November Zulu'.

When this became apparent, the initial actions of the mentor, on taking control of the RTF, were inappropriate.

Three safety recommendations are made during the course of the investigation.
Learning Keywords:Operations - Airspace - Air Proximity
Operations - Airspace - Air Traffic Control


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