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APU Test button

Old 12th Sep 2021, 23:56
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APU Test button

Any specific procedure should use when we make APU auto shutdown test ...
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Old 13th Sep 2021, 04:32
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Yes. The procedure is don't touch it.

That the maintenance panel!
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Old 13th Sep 2021, 07:48
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Follow the AMM Chapter 26 (Fire Protection) procedure with associated warnings and cautions if you are an engineer. If not, leave it to your engineers unless you have a specific FCOM procedure to use it.

It injects a simulated ASD signal so warnings, functions and indications can be checked by BITE test.

Last edited by Tom Sawyer; 20th Sep 2021 at 02:09.
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Old 13th Sep 2021, 12:00
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Just watch out for the ‘wings fall off’ button. It’s on the same panel. So take your time.
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Old 16th Sep 2021, 14:31
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But it's just so inviting - it's a bit like the Simpson's - "What is your fascination with my forbidden closet of mystery"....must.....push.....button.....
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Old 17th Sep 2021, 12:11
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On the B-727 anytime you did the fire test with the APU running, you did an APU auto shutdown test.
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