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Noise after turning ON battery? Printed From: Just Flight Forum Category: Just Flight Products Forum Name: 737 Professional Forum Description: Discussion area for 737 Professional URL: http://forum.justflight.com/forum_posts.asp?TID=21463 Printed Date: 20 Apr 2024 at 3:10am Topic: Noise after turning ON battery? Posted By: Joelpacheco Subject: Noise after turning ON battery? Date Posted: 14 Sep 2013 at 11:46pm Please, does anybody know what is that noise after turning ON battery from dark and cold? Sounds like a pump running but all systems seem to be OFF. That noise remains during the whole flight and is annoying. It only goes away by turning the battery OFF. Thanks Replies: Posted By: Joelpacheco Date Posted: 15 Sep 2013 at 8:16am I found out the noise is the "avionics buzz". I guess it does exist in the actual plane, but it is too loud for my taste so I moved that sound file out.

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