pilots reported fuel shortage 45-50 minutes before avianca 707 crash : aviation: investigators say all of jet’s engines were dead before it hit the ground. the condition of the fan blades is a key clue.

by:Sinowon     2020-01-11
Investigators said Saturday that the worried pilots, 45 to 50 minutes before the plane crashed, first informed air traffic controllers that their Avianca jet was running low on fuel, all four engines stopped. 73 people were killed on board.
Radio talk and later radio information-
Plus stories from survivors and witnesses, plus more and more technical evidence ---
The theory that Columbia Airlines\'s Boeing 707 did not have enough fuel to land was strongly supported.
Lee Dickinson, a member of the National Transportation Safety Board, said air controllers on the Atlantic Coast ordered the aircraft to maintain a 89-minute flight mode due to bad weather.
He said that NTSB investigators were trying to determine whether there was any detention ordered after the first radio message of concern to the crew about low fuel levels was sent out.
Members of the NTSB collect new information by listening to air traffic control tapes and researching radar tapes that are longer than cockpit voice recorders, which are recovered from debris.
Dickinson told a late man: \"about 45 to 50 minutes before the accident, the advertising fuel line was checked and communicated with air traffic controllers on low fuel . \"
Saturday evening press conference
The pilots reported, he said, \"they are worried about low fuel levels.
Dickinson also said investigators had managed to inspect some of the aircraft\'s fuel lines. “The No.
\"The fuel line is in good condition,\" he said . \"
\"We did turn it on to see if there was fuel on the production line. There was not.
\"Ad investigators have also significantly reduced the amount of jet fuel on the aircraft, down from about 10,000 pounds to 1,100 to 1,200 pounds--
Only about 150 gallons.
Due to heavy rain and heavy air traffic, the plane was approved to land at JFK International Airport in New York after a stay of 89 minutes.
But as the plane sank too fast, the crew suspended the landing and a warning system repeatedly ordered: \"Pull up! Pull Up!
Federal officials said that when the plane was preparing for a second landing, the pilots again reported that they were running out of fuel or lack of fuel.
The crew then told flight controllers that the plane had lost two engines.
Dickinson said late Saturday that the death toll had climbed to 73 and 66 bodies had been confirmed.
He said there were 86 survivors, some of whom were still in critical condition.
He said there were 159 people on board, two fewer than the number he reported on Friday.
Investigators also confirmed on Saturday that four engines were not working when the plane crashed.
The failure of the fourth engine was confirmed after being dug out of the mud.
The check shows that the fan blades are not damaged, just like the other three engines.
If the blades turn all the way, they will certainly be damaged by debris when the plane hits, officials said.
\"We found some pieces in these engines, some trees, some limbs, some trunks,\" Dickinson said . \".
\"But the fan blades are not damaged, which shows us that the engine is not rotating.
\"If there is a rotation, there will be no wood trunk in these engines.
There will be debris.
You will see the marking and damage of the fan blades which you cannot see.
\"When the plane hit the hillside, it was taken off the deck of the tree top and the ranch --
Style home in this wealthy Long Island community.
Two residents inside were not injured.
All day on Saturday, anxious people looking for relatives continued to go to the hospital and morgue in Nassau County forensic office, where many found the dead.
A family came out of the morgue and tearfully told other relatives in Bogota, Colombia, that their brothers had not survived the accident.
Some airline pilots said that when the aircraft\'s fuel is very low and is climbing after landing failure, the fuel may flow out of the engine, causing the engine to stall.
Investigators also investigated the possibility of aircraft fuel.
The measuring instrument is not accurate.
Barry Shif, a senior captain of a large airline, told The Times that even if the instrument was wrong, the flight engineer should track the amount of fuel through other calculations.
\"There is no excuse at all for running out of fuel,\" he said . \".
\"Even if there is a problem with these meters, it is the responsibility of the flight engineer to track and carry out a continuous calculation of the amount of fuel. . . .
\"It\'s hard to imagine any situation that would explain how the pilot would run out of fuel without carelessness.
In order to be legal, you must have enough fuel to take from your starting point to your destination, thus missing a way to go from there to your other destination, and then have additional reserve fuel on it.
It\'s usually 45 minutes (worth of fuel).
\"It can be imagined that you may use more fuel than expected due to strong winds and you may start to consume some reserve fuel.
It is then the captain\'s responsibility to land somewhere near the destination for additional fuel.
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