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The fuel flows through the tubes while the hot engine oil circulates around the outside. "Restrictions in the fuel system between the aircraft fuel tanks and each of the engine HP pumps, resulting in reduced fuel flows, is suspected." Travel classes. The investigation identified the following probable causal factors that led to the fuel flow restrictions: Nevertheless, the AAIB believed its testing showed that fuel flow was restricted on G-YMMM and that frozen water in the jet fuel could have caused the restriction, ruling out alternative hypotheses such as a failure of the aircraft's Because temperatures in flight had not dropped below the 777's designed operating parameters, the The report went on to recommend that the aviation regulators (FAA and EASA) should consider whether other aircraft types and other engines might be affected by the same problem, and to consider changing the certification process to ensure that future aircraft designs would not be susceptible to the newly recognised danger from ice formation in the fuel.The report acknowledged that a redesign of the fuel system would not be practical in the near-term, and suggested two ways to lower the risk of recurrence. There were no fatalities. It is designed to provide two benefits: it warms the fuel to prevent ice reaching other engine components, and simultaneously cools the engine oil.AAIB final report, section 1.6.5.1 (page 12) "Cabin Layout"AAIB final report, section 1.1 (page 4) "Due to the predicted low temperatures, [the crew] briefed that they would monitor the fuel temperature en route. On January 26, 2020, a Sikorsky S-76B helicopter crashed in Calabasas, California, around 30 miles (48 kilometers) northwest of downtow... Inscrivez-vous maintenant (gratuitement) pour des fonctionnalités personnalisées, des alertes de vols, et plus encore! The aircraft came to rest on the All flights in and out of Heathrow were halted for a short time after the accident. The aircraft first flew on 18 May 2001 and was delivered to British Airways on 31 May 2001. Depending on its exact composition, the actual freezing point can be lower than this. It concluded: Join the Club. Search for. One was to use a fuel additive (The Special Bulletin of 18 February, stated that there was "no evidence of a mechanical defect or ingestion of birds or ice", that there was "no evidence of fuel contamination or unusual levels of water content" within the fuel and that the recorded data indicated that there were "no anomalies in the major aircraft systems". The single-aisle jet had flown from Izmir on Turkey’s Aegean coast, authorities said. Indeed, the need to issue In early 2009 Boeing sent an update to aircraft operators, linking the British Airways and Delta Air Lines "uncommanded rollback" incidents, and identifying the problem as specific to the Rolls-Royce engine fuel-oil The enquiries led Boeing to reduce the recommended time that the fuel on 777 aircraft equipped with Rolls-Royce Trent 800-series engines be allowed to remain at temperatures below In November 2009 it was announced that 10 passengers were to sue Boeing over the incident in the On 17 March 1977 a British Airtours Boeing 707 being used for pilot training crashed and caught fire during its take-off roll at Glasgow Prestwick Airport. After a battery of tests, the AAIB had not yet succeeded in reproducing the suspected icing behaviour, and was undertaking further investigation. The senior first officer had 9,000 total flight hours, with 7,000 in Boeing 777 aircraft. "AAIB final report, section 1.18.1.1 (pages 117–118)AAIB final report, section 2.8.5 (page 155) "Ice accumulation during main tank feed"AAIB final report, section 2.8.5 (page 155) "Release of accumulated ice on approach"AAIB final report, section 2.8.5 (page 155) "The fuel flow restriction" You Might Also Like This included creating a mock-up of G-YMMM's fuel delivery system, to which water was added to study its freezing properties. Avios credit … It was the first time in the model's history that a Boeing 777-200ER was written off, and the first hull loss of any Boeing 777.The accident was investigated by the Air Accidents Investigation Branch (AAIB) and a final report was issued in 2010. About the Club. Some inbound flights were delayed, and 24 flights were diverted to On the afternoon of 20 January 2008, two cranes lifted the aircraft onto wheeled platforms and removed it from its resting place.During a press conference the day after the accident, Burkill and Coward were grounded for a month following the crash while they were assessed for All sixteen crew were awarded the BA Safety Medal for their performance during the accident. The medal is British Airways' highest honour.British Airways continues to use the flight 38 designation on its Beijing to Heathrow route,Mechanical engine failure was not regarded as a likely cause given the very low probability of a simultaneous dual In its Special Bulletin of 18 February 2008, the AAIB noted evidence that The AAIB issued a further bulletin on 12 May 2008 which confirmed that the investigation continued to focus on fuel delivery. There were no fatalities. After ruling out fuel freezing or contamination, the investigation then focused on what caused the low pressure at the pump inlets. The report restated a previous Boeing Service Bulletin giving procedural advice that fuel switches should be operated before fire handles. There is no evidence of any anomalous behaviour of any of the aircraft or engine systems that suggests electromagnetic interference. Some small foreign bodies, however, were detected in the fuel tanks, although it was later concluded that these had no bearing on the accident.The Special Bulletin of 12 May 2008 specifically ruled out certain other possible causes, stating: "There is no evidence of a wake vortex encounter, a bird strike or core engine icing. The fuel flows through the tubes while the hot engine oil circulates around the outside. British Airways logo. British Airways Flight 38 (IATA code "BA 38") is a scheduled passenger flight from Beijing Capital International Airport(PEK) in China to London Heathrow Airport(LHR) in the United Kingdom, a 8,100-kilometre (4,400 nmi; 5,000 mi)trip. The report confirmed that the fuel was of good quality and had a freezing point below the coldest temperatures encountered, appearing to rule out fuel freezing as a cause. It went on: "This was not causal to the accident but could have had serious consequences in the event of a fire during the evacuation."