Incidents and accidents
As of August 2012, the 777 has been in eight aviation occurrences,[182] including two hull-loss accidents,[183] and two hijackings, with no fatalities among the passengers or crew.[184] The only fatality involving the twinjet occurred in a refueling fire at Denver International Airport on September 5, 2001, during which a ground worker sustained fatal burns.[185] The aircraft, operated by British Airways, suffered fire damage to the lower wing panels and engine housing; it was later repaired and put back into service.[185][186]
The type's first hull-loss occurred on January 17, 2008, when British Airways Flight 38, a 777-200ER with Rolls-Royce Trent 895 engines flying from Beijing to London, crash-landed approximately 1,000 feet (300 m) short of Heathrow Airport's runway 27L and slid onto the runway'sthreshold. There were 47 injuries and no fatalities. The impact damaged the landing gear, wing roots, and engines, and the aircraft was written off.[187][188] Upon investigation, the accident was blamed on ice crystals from the fuel system clogging the fuel-oil heat exchanger (FOHE).[181]Air accident investigators called for this component on the Trent 800 series engine to be redesigned in 2009.[189] Redesigned fuel oil heat exchangers were installed in British Airways' 777s by October 2009.[190]
Two other minor momentary losses of thrust with Trent 895 engines occurred in February and November 2008.[191][192] The National Transportation Safety Board (NTSB) investigators concluded that, just as on BA38, the loss of power was caused by ice in the fuel clogging the fuel-oil heat exchanger. As a result, the heat exchanger was redesigned.[181]
The type's second hull-loss occurred on July 29, 2011, when an EgyptAir 777-200ER registered as SU-GBP suffered a cockpit fire while parked at the gate at Cairo International Airport.[193] The plane was successfully evacuated with no injuries,[193] and airport fire teams extinguished the fire.[194] The aircraft sustained structural, heat, and smoke damage, and was written off.[193][194] Investigators focused on a possible electrical fault with a supply hose in the cockpit crew oxygen system.[193]
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