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^^lol!^^
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Again, if there is a breaker on the fuel pump and the pump is over loaded, it will trip. That trip should occur well before you reach the point of wire damage. But we are also have to be running a pump on an EMPTY TANK. And whatever has to have done what it needed to cause a spark. And the tank had to be above 160F for the vapors to occur that will cause an explosion. If any one of those things didn't happen. No boom. |
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Where are you getting the flash point from? The few sources I see say it is 100F for Jet-A or kerosene.
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Plus, the aircondtioner packs were directly under the center wing tank.
They get very, very hot while on the ground and taxiing. And it was a hot summer evening. |
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Here is a link to the JP-5 MSDS http://www.hess.com/ehs/msds/9942JetFuelJP5.pdf |
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Take a look at the top of the wiki
Jet fuel - Wikipedia, the free encyclopedia 100F was the old standard. Look at the upper right hand side in the yellow box. JP-5 is fairly standard stuff, but Mil-Spec. |
Lets say the "damaged wiring" was a breakdown of the insulation that allowed a spark.
Measuring the performance of wiring insulation in situ is actually fairly easy. All you need is a hi-pot tester. This applies several thousand volts to a conductor with a very low current. The current is so low that no damage is done, certainly not to big honking fuel pumps. When the high voltage is applied you can then measure leakage current with is a direct indicator of the health of the insulation. So why wouldn't the investigators go and measure a sample of the many aircraft of similar age, type etc and report back. e.g. 1 in 10 of the aircraft have questionable wiring and will be grounded until they can be repaired. Just requiring pilots to leave a min level of fuel in the tank seems a bit weak for a corrective action. |
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To continue my thought further...
with all the aircraft out there with this fuel supply configuration, and all the delays on hot days and allowing for human error managing the pumps and the possibility of faulty switches and sensors exacerbating the situation surely another a/c would have experienced similar conditions and suffered the same fate. Faulty wiring that was not repaired but simply mitigated by changing an SOP seems a little too convenient and a little too successful. |
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This incident led to a lot more than a simple fuel minimum. This was the event that triggered an airworthiness directive requiring grounding the fleet and verification of the wiring prior to dispatch. That was the immediate action, the long term action was removal from service of that style of wiring for that application, and a complete revamp of the disign requirements of fuel tank wiring for all aircraft. Many years later I routinely do testing on aircraft fuel systems that are driven directly by this incident, on many types of aircraft.
Lessons in aviation tend to be expensive, and are rarely disregarded. |
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"On July 17, 2008, the Secretary of Transportation visited the facility and announced a final rule designed to prevent more accidents caused by explosions in fuel tanks. The NTSB first recommended such a rule just five months after the Flight 800 accident and thirty-three years after a similar recommendation issued by the Civil Aeronautics Board Bureau of Safety on December 17, 1963, nine days after the crash of Pan Am Flight 214.[135] In 2009, Boeing advised the FAA that its new Boeing 787 Dreamliner could not meet the new safety standards. The FAA proposed to relax the safeguards for preventing sparks inside the fuel tank, calling them "impractical".[136]" |
Tonight on C2C-AM for anyone who's interested:
Investigating TWA 800 - Shows - Coast to Coast AM Former police officer specializing in accident investigation, James Sanders was married to a TWA flight attendant when TWA flight 800 went down in 1996. He started his own investigation and later was indicted for the crime of receiving residue from the accident and having it tested. He'll discuss his journey looking for the truth behind what happened. Find a local station carrying the show here... some have streaming audio: Radio Stations - Coast to Coast AM |
C to C AM?
Those nuts all believe in 'Chemtrails', rusty 'tools and gears' lying around on the surface of Mars, and other nonesense. That show is for entertainment only. Zero facts. Except for the the weekend guys sometimes, but never on weeknights. |
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"Zero facts"...not true. I'm guessing you haven't listened all that much. Sure, they sometimes have some fruit loops on there who talk to their houseplants, and I tune out when they're on, but there's plenty of guests (weeknights and weekends) that are credible. Tonight's guest... I kinda doubt he's in the fruit loop category, so I'm gonna check it out. |
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This just keeps getting better (worse). |
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