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  #31  
Old 10-21-2018, 09:03 PM
Bicyclops Bicyclops is offline
 
Join Date: Oct 2012
Location: LA, California
Posts: 178
Default Back up to the back up

I went with 2 Advanced with 2 ADAHRS and then threw a TruTrak (AFS Pilot) in as the ultimate back up. If the EFIS(s) go down or both (!) ADAHRS go TU, I can still level it up and fly a heading whilst I figure out what's next.

Ed Holyoke

Quote:
Originally Posted by iamtheari View Post
I guess I should have asked for single, dual, or triple... Another thing I am still rolling around in my head is whether to have a backup flight instrument. For example, the Garmin G5 works as a display if the G3X system goes down, and it can also act as a backup ADAHRS for the G3X displays if the main ADAHRS goes down. So the secondary poll here is whether to burn panel real estate on a backup instrument or to have a dual-screen EFIS with dual ADAHRS. A guy can have too many backups at some point.
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  #32  
Old 10-21-2018, 09:06 PM
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rleffler rleffler is offline
 
Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
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Quote:
Originally Posted by iamtheari View Post
I guess I should have asked for single, dual, or triple... Another thing I am still rolling around in my head is whether to have a backup flight instrument. For example, the Garmin G5 works as a display if the G3X system goes down, and it can also act as a backup ADAHRS for the G3X displays if the main ADAHRS goes down. So the secondary poll here is whether to burn panel real estate on a backup instrument or to have a dual-screen EFIS with dual ADAHRS. A guy can have too many backups at some point.
Two EFIS in IMC provides some redundancy, but if one adahrs goes bad, which one is correct. That’s why you need a third device for tie breaker. The G5 serves the tie breaker role very well.

I personally find having a PFD and MFD in front of me, as well as another email 3” EFIS as a tie breaker advantageous. Especially if you want to view charts and plates at the same time.
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  #33  
Old 10-22-2018, 09:57 AM
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maniago maniago is offline
 
Join Date: Aug 2014
Location: Bowie MD
Posts: 694
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I'm in the camp that Bob mentioned above (my panel pic is posted earlier in this thread). I have dual adahars, but wanted a steam horizon to break any tie. When I went to look at new and used ones, the price was a killer so I went with a GRT minix for less - internal GPS, internal adahars, internal BU battery, backup AP, BU engine gauges HSI etc etc in a 3" space - not as small as the G5, but more features. In reality I dont need any of the steam gauges now since those are all on the Mini, but ah well, build the plane you want, not what others say you should....
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MustangII (FoldingWing) "FirewallFwd&sundries": IO360B1E,RSA,C2YR-BF/F7666-2,Superior sump,James; 2xHXr,MiniX,EIS,480,327,240,SL30,Navworx; SteamAlt,AS,VSI
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Last edited by maniago : 10-22-2018 at 10:03 AM.
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