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Stall warner issue

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roddyeuropa(at)aol.com
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Posted: Tue Jul 24, 2018 10:02 pm Post subject: Stall warner issue

I have had an issue recently with my stall warner. It came on intermittently in flight, at 100 knots +, and when changing altitude. Cause: partially blocked tube, (probably by an insect?). Then a few days later the airfield reported strange noise (stall warner sounder...) coming from my aircraft, while parked one evening. Same issue, port blocked again, and change in pressure on the other port on the switch (in this case I think a rise in ambient air pressure)  triggered the pressure switch. Both cleared by blowing through with an portable tyre inflator. 

I now have a simple stall warner port cover - a luggage strap that goes round the wing and covers the stall warner hole on the leading edge.

Roddy Kesterton

G-IKRK

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John Wighton

Joined: 18 May 2010
Posts: 241

Posted: Tue Jul 24, 2018 11:38 pm Post subject: Re: Stall warner issue

I use a luggage strap with a rubber tube over the end which tensions a Remove Before Flight flag. The flag has a pin which slides into the stall warning hole in the LE. Makes it highly unlikely to forget it as it locks the ailerons as well. 



Roddy’s plane is parked outside in a large expanse of grass, hence is more likely to have insect infestation.

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John Wighton
Europa XS trigear G-IPOD

Paul M 383

Joined: 19 Mar 2012
Posts: 97
Location: United Kingdom

Posted: Wed Jul 25, 2018 6:09 am Post subject: Stall warner issue

I used a small split pin covered in heat shrink - insert split pin into hole and attach a small key ring holding a Remove Before Flight flag (free key fob from Jeppesen (other free key fobs are available...))



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graeme bird

Joined: 15 Jul 2010
Posts: 434

Posted: Mon Aug 27, 2018 12:37 am Post subject: Re: Stall warner issue

Thanks for posting this; Iv'e just started to have a similar problem; turn the ignition on and it's beeping. Good idea to blow it out.

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Graeme Bird
kit4 (Wagstaff) TBD
Kit3 G-CLXU (Gregory) mono 914 xs Woodcomp
Kit2 G-PATS - (kesterton) Mono Classic 912 warpdrive
Kit 1 G-UMPY - Mono Classic/XS 912S, Woodcomp G(@)gdbmk.co.uk

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