UK Air Accidents Investigation Branch released a Special Bulletin indicating that its investigation into last month’s accident involving a British Airways 777-200 at London Heathrow is centred on the fuel pumps and not the engines. AAIB said examination of both the left and right high-pressure fuel pumps “revealed signs of abnormal cavitation on the pressure-side bearings and the outlet parts” that could indicate either a restriction of the fuel supply or “excessive aeration” of the fuel.