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UA 777 door torn off

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UA 777 door torn off

Old 10th Jun 2005, 17:16
  #21 (permalink)  
 
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Thought I remembered an old thread on this topic... seems 777 doors may be relatively easy to tear off, by design...

R1
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Old 12th Jun 2005, 09:24
  #22 (permalink)  
 
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Safety Guy,

Thanks for the input, but no, it's not for that reason!

It's actually to confirm the APU is not running prior to starting the takeoff roll, you see in our NGs, the APU is not allowed to be running during the takeoff!

And as I said, surely they could tell the APU is not running by other means, like maybe: the EGT is decreasing below normal idle reading after a minute has passed since the switch was selected off!!

Cheers, FD
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Old 12th Jun 2005, 10:05
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Safety Guy,
I really don't know where you heard that story but it is absolute rubbish. The apu will burn about 150kgs per hour. If the aircraft was airbourne for 10 hours (which I think is a bit of a stretch) the APU would use about 1.5 tonnes. This would use about half of the typical landing reserves. So maybe we could rephrase the story to make it sound slightly possible......

Aircraft landed at planned destination with less than legal minimums due to APU being left running or....

Aircraft diverted in order to land with legal reserves due to APU left running!!!

Flight Detent, I\'m not sure which NG you fly, but the one I fly is a Boeing 737. In my MEL it states that you must have the APU running for the entire flight if you have an engine generator INOP. Not only that, Boeing recommended to us that we leave the APU running for short sectors as starting/stopping was costing more in maintenance than the few drops of fuel it used on a 45 minute flight.

So you definatly can leave the APU running for takeoff on a Boeing NG. Not intending to be smart....but is there another aircraft referred to as an NG? I never was much of a spotter!
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