The Air Accidents Investigation Branch (AAIB) Interim Report on the 17 January 2008 BA 777-200ER crash at London Heathrow Airport is out. You'll recall this is the incident where both aircraft engines failed to deliver commanded thrust.
Probable cause is found by the AAIB to be water ice in the fuel delivery system. Three recommendations are made (paraphrased):
2008-047: The FAA and the EASA, in conjunction with Boeing and Rolls-Royce, should introduce interim measures to reduce the risk of water ice causing a restriction in fuel feed systems.
2008-048: The FAA and EASA should consider the implication of the AAIB findings on other airframe/engine combinations.
2008-049: The FAA and the EASA should review the current certification requirements to ensure tolerance to a buildup and release of ice in the fuel feed system.
The
AAIB Interim Report is available for download as a pdf. It makes interesting reading if you want more information about the findings or details about how 777 fuel systems work.