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AV-30 Issue

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John Cormack
Active Member
Joined: 3 years ago
Posts: 12
Topic starter  

Hello all I recently installed an AV-30 in my 108. When I fly slow flight or power off and on stalls the AV-30 topples. I thought it might be a vibration issue but during power off stall with idle power vibration is very low. Really like to get input from anyone that has experience with that unit. 

Thank you. 

John


   
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Carsten H.
(@carl)
Estimable Member
Joined: 4 years ago
Posts: 124
 

I would suspect that your system voltage drops below minimum limits for the AV-30. You might want to temporarily install a voltmeter to monitor idle voltage. If it drops due to other equipment running, anti collision light, avionics, etc - it might point to a weak battery. My 2ç worth.

Carsten 


   
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John Cormack
Active Member
Joined: 3 years ago
Posts: 12
Topic starter  

@carl I will double check that but the av-30 has an internal battery that it is supposed to be able to run on for two hour in case of electrical failure.


   
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Carsten H.
(@carl)
Estimable Member
Joined: 4 years ago
Posts: 124
 

Yes but the internal battery may also have issues. I can't see where slowing to a stall would adversely impact the instrument other than the electrical supply dropping below the AV-30 minimum of 10vdc.

Our electrical systems are somewhat limited. My generator kicks in @ 1400rpm and shows 14.2v. Below that is battery voltage.

Of course it could also be something faulty with one of the sensors that tumbles the AV-30 at low air speeds because it thinks that is what will happen. Good luck and be sure and let us know what you find.

Carsten  


   
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James
(@paxflyergmail-com)
Eminent Member
Joined: 2 years ago
Posts: 29
 

Select system voltage view on the AV-30, easy enough to do.  But you are also looking for 100% internal battery level before flight. If both are good, then something else is wrong and I'm sure these units are still under warrantee. 


   
Carsten H. reacted
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