The U.K. Air Accidents Investigation Branch (AAIB) has published an Interim Report on the Accident to Boeing 777-236ER, G-YMMM at London Heathrow Airport on 17 January 2008, better known as the BA038 crash. As I mentioned before, aviation accident investigations are time-consuming. 8 months after the crash they are not finished yet, but they have an idea what the cause might have been. Their summary:
»The investigation has shown that the fuel flow to both engines was restricted; most probably due to ice within the fuel feed system. The ice is likely to have formed from water that occurred naturally in the fuel whilst the aircraft operated for a long period, with low fuel flows, in an unusually cold environment; although, G-YMMM was operated within the certified operational envelope at all times. (…)«
The report goes on discussing the issue and warns that other types of aircraft may be affected as well.