The speed bird hit the ground just short of the runway after an 8,100 kilometre (4,400 nmi; 5,000 mi) flight.
47 people were injured in the accidents but there were no fatalities.
Speculation on the crash
Initially, the cause of the crash raised several issues. The first theory behind it was that both engines failed at the same time. Even though the engines failed to release enough energy for that high- powered landing, the low chances of concurrent dual engine failure led to the ruling out of this theory as a possible cause of the crash by the February Special Bulletin.
The other theory was software or electronic failure that powers the engine. An item in The Guardian newspaper on January 19th 2008 quoted an anonymous source saying that, an automated alarm that was supposed to signal the pilots to dive in the engine power, failed to start.
Electronic system failure of 777 craft was highlighted as the potential cause of the accident. Reports indicated that, an electronic hitch in the automated engine system control might have disturbed the link between manual and computerized controls and the two plane engines. This was also ruled out by the Bulletin.
The other speculation was that there was a fuel starvation state, whereby there was fuel but it could not get to the engines. Debris or water in the tanks might have stopped the engines from their supply hence loss of power.
The cause of the accident
Following the accident, investigations revealed that the crash was caused by ice crystals in the fuel, which clogged the fuel oil heat exchanger (FOHE) of every engine on the plane. This prevented the flow of fuel to the engines in the final move to Heathrow.
Since temperatures in the flight were still at high rates according to the calculated operating limitations, the Air Accidents Investigations Branch (AAIB) advised Boeing and Rolls Royce to take temporary measures on Trent 800 powered 777s. The reason for this precaution was to decrease the risk of ice formation in the tanks that prevent the smooth delivery of fuel.
Boeing mailed an update to the operators of aircraft. This update identified the condition as similar to the Rolls Royce fuel oil engine heat exchangers. Rolls Royce then enlarged a modification to its Fuel Oil Heat Exchanger; the European Aviation Safety Agency (EASA) authorized that all involved airplanes be modified in line with the stipulated modifications not later than January 1st 2011. 777 Boeing crafts that are powered by either GE or Pratt and Whitney engines are exempted from this rule since they are not affected by these problems.
British Airways [http://www.thepointologist.com/readPage.aspx?url=/myIndex.php?p=614] inside investigations
British Airways [http://www.thepointologist.com/readPage.aspx?url=/myIndex.php?p=614] then conducted a search into the scenario. It reported that the flight team worked to avoid a worse result of the crash. They calmed down passengers on board and ensured they followed the safety guidelines. It also found out that the emergency alarm was too quiet for some of the cabin crew to hear.
Real Footage of Plane Crash by worldtalk
Article Source: http://EzineArticles.com/6690703
47 people were injured in the accidents but there were no fatalities.
Speculation on the crash
Initially, the cause of the crash raised several issues. The first theory behind it was that both engines failed at the same time. Even though the engines failed to release enough energy for that high- powered landing, the low chances of concurrent dual engine failure led to the ruling out of this theory as a possible cause of the crash by the February Special Bulletin.
The other theory was software or electronic failure that powers the engine. An item in The Guardian newspaper on January 19th 2008 quoted an anonymous source saying that, an automated alarm that was supposed to signal the pilots to dive in the engine power, failed to start.
Electronic system failure of 777 craft was highlighted as the potential cause of the accident. Reports indicated that, an electronic hitch in the automated engine system control might have disturbed the link between manual and computerized controls and the two plane engines. This was also ruled out by the Bulletin.
The other speculation was that there was a fuel starvation state, whereby there was fuel but it could not get to the engines. Debris or water in the tanks might have stopped the engines from their supply hence loss of power.
The cause of the accident
Following the accident, investigations revealed that the crash was caused by ice crystals in the fuel, which clogged the fuel oil heat exchanger (FOHE) of every engine on the plane. This prevented the flow of fuel to the engines in the final move to Heathrow.
Since temperatures in the flight were still at high rates according to the calculated operating limitations, the Air Accidents Investigations Branch (AAIB) advised Boeing and Rolls Royce to take temporary measures on Trent 800 powered 777s. The reason for this precaution was to decrease the risk of ice formation in the tanks that prevent the smooth delivery of fuel.
Boeing mailed an update to the operators of aircraft. This update identified the condition as similar to the Rolls Royce fuel oil engine heat exchangers. Rolls Royce then enlarged a modification to its Fuel Oil Heat Exchanger; the European Aviation Safety Agency (EASA) authorized that all involved airplanes be modified in line with the stipulated modifications not later than January 1st 2011. 777 Boeing crafts that are powered by either GE or Pratt and Whitney engines are exempted from this rule since they are not affected by these problems.
British Airways [http://www.thepointologist.com/readPage.aspx?url=/myIndex.php?p=614] inside investigations
British Airways [http://www.thepointologist.com/readPage.aspx?url=/myIndex.php?p=614] then conducted a search into the scenario. It reported that the flight team worked to avoid a worse result of the crash. They calmed down passengers on board and ensured they followed the safety guidelines. It also found out that the emergency alarm was too quiet for some of the cabin crew to hear.
Real Footage of Plane Crash by worldtalk
Article Source: http://EzineArticles.com/6690703
