On 17 January 2008 , a British Airways Boeing 777-236ER , operating as BA038 from Beijing to London , crash-landed at Heathrow after both Trent 800 engines lost power during the aircraft 's final approach . The subsequent investigation found that ice released from the fuel system had accumulated on the fuel-oil heat exchanger , leading to a restriction of fuel flow to the engines . This resulted in Airworthiness Directives mandating the replacement of the heat exchanger . This order was extended to the 500 and 700 series engines after a similar loss of power was observed on one engine of an Airbus A330 in one incident , and both engines in another . The modification involves replacing a face plate with many small protruding tubes with one that is flat
BA038
British Airways Flight 38
Rolls-Royce Trent