Partial interruption to the fuel flow still appears to be in the frame as a potential cause of the British Airways Boeing 777 crash-landing at London Heathrow airport on 17 January, according to a just-issued UK Air Accident Investigation Branch special bulletin (AAIB).

The Agency is careful not to state it as a cause, but concludes the interim report by saying that “a comprehensive examination and analysis is to be conducted of the entire aircraft and engine fuel system, including the modelling of fuel flows and taking account of the environmental and aerodynamic effects”.

The aircraft was descending through 720ft (220m) on final approach with the runway in sight when autothrottle, and then the crew, demanded an increase in thrust, but they only got a temporary response, following w

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