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Redundant Airspeed with EFIS Question

 
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rbjjr



Joined: 18 Mar 2007
Posts: 36
PostPosted: Sat Dec 27, 2008 2:57 pm    Post subject: Redundant Airspeed with EFIS Question Reply with quote
I have seen many panels with EFIS airspeeds that include a backup steam airspeed as well for redundancy. I'm curious how this setup is plumbed. Do you need two pitot tubes or can you somehow split the pitot pressure tube to feed two instruments?

Thanks

Burke Johnson
CH-750

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gfmjr_20(at)HOTMAIL.COM
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PostPosted: Sun Dec 28, 2008 4:01 am    Post subject: Redundant Airspeed with EFIS Question Reply with quote
Burke--
 I have redundant airspeeds C using dual Dynons C and ended up splitting the pitot and static lines. Works fine

George May
601XL 912s
[quote] Subject: Redundant Airspeed with EFIS Question
From: burkeandsusan(at)verizon.net
Date: Sat C 27 Dec 2008 14:57:38 -0800
To: zenith-list(at)matronics.com

--> Zenith-List message posted by: "rbjjr" <burkeandsusan(at)verizon.net>

I have seen many panels with EFIS airspeeds that include a backup steam airspeed as well for redundancy. I'm curious how this setup is plumbed. Do you need two pitot tubes or can you somehow split the pitot pressure tube to feed two instruments?

Thanks

Burke Johnson
CH-750




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Gig Giacona



Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA
PostPosted: Sun Dec 28, 2008 9:00 am    Post subject: Re: Redundant Airspeed with EFIS Question Reply with quote
The Aircraft Spruce catalog has a drawing showing the plumbing needed to do this.

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W.R. "Gig" Giacona
601XL Under Construction
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