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Constant siren sound after shutdown?

Printed From: Just Flight Forum
Category: Just Flight Products
Forum Name: PA-28R Arrow/Turbo Arrow III/IV and Warrior II
Forum Description: Discussion area for the PA-28 aircraft (PA-28 Arrow III, Turbo Arrow III/IV and Warrior II)
URL: http://forum.justflight.com/forum_posts.asp?TID=32009
Printed Date: 07 May 2024 at 5:54pm


Topic: Constant siren sound after shutdown?
Posted By: robains
Subject: Constant siren sound after shutdown?
Date Posted: 02 Jan 2018 at 6:37am
In the XP11 version, I have a constant faint siren sound that never goes away even after I completely shutdown the aircraft and turn all power off.  The only way to stop the siren is to switch to a different aircraft (not variant but completely different aircraft).

Cheers, Rob.


Replies:
Posted By: Martyn
Date Posted: 02 Jan 2018 at 10:21am
Hi Rob,

The only siren that I can think of is the ELT which is controlled using the switch to the left of the pilot. It is set to the auto position by default, which triggers the ELT if you exceed 4.6G.

Thanks
Martyn


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Martyn
Just Flight Ltd

Posted By: ThomasAH
Date Posted: 02 Jan 2018 at 11:03am
"faint siren" could be the vacuum pump for the gyro, too.

Edit: Or a rotating beacon?

Posted By: robains
Date Posted: 02 Jan 2018 at 3:29pm
Hi Martyn,

I think that was it, I did exceed 4.6G with a couple of aggressive maneuvers.  But shouldn't that siren be extinguished when the aircraft in completely powered down ... or does the siren run on some other power source?  Also, is there a button/switch to disable it?

Cheers, Rob.

Posted By: Martyn
Date Posted: 02 Jan 2018 at 3:58pm
Hi Rob,

I think it has an independent power source but not 100% certain. You should be able to switch it off using the ELT switch or by reloading the aircraft.

Thanks
Martyn


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Martyn
Just Flight Ltd

Posted By: ThomasAH
Date Posted: 02 Jan 2018 at 5:16pm
I would hope any ELT has an independent power source, because it should continue working after a crash :)


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