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lewblok

Audible alarm sitting at gate

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In doing a short turnaround and sitting at the gate while GSX ground services are preparing the aircraft for the next flight, there is an audible alarm that has no indicator light  and cannot figure out what it is for.  Engines are shut down, APU is running and park brake is on, but still this sound will not shut off.  Hope someone can help me fix this obnoxious problem.  I know I have probably done something wrong, but cannot figure it out.  Thanks

 

Lewis Block

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Is the APU on the busses?  The IRUs have an audible alarm when they are running on DC power only.

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In doing a short turnaround and sitting at the gate while GSX ground services are preparing the aircraft for the next flight, there is an audible alarm that has no indicator light and cannot figure out what it is for. Engines are shut down, APU is running and park brake is on, but still this sound will not shut off. Hope someone can help me fix this obnoxious problem. I know I have probably done something wrong, but cannot figure it out. Thanks

 

Hi, Lewis,

 

Sounds (pun intended) similar to this:

 

http://www.avsim.com/topic/473154-external-alarm/#entry3282036

 

Mike

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