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  #1  
Old 04-01-2009, 07:11 PM
TomVal TomVal is offline
 
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Default Compass Correction Card

Is a compass correction card required if you have a whiskey compass installed? I notice many panels do not have the correction card installed.

Thanks,
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  #2  
Old 04-02-2009, 07:05 AM
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Default Yes!

If you have an adjustable whiskey compass, the correction card is required.
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  #3  
Old 04-02-2009, 03:37 PM
TomVal TomVal is offline
 
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Default Correction Card

Quote:
Originally Posted by Mel View Post
If you have an adjustable whiskey compass, the correction card is required.

Thanks...that's what I thought.

Regards
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  #4  
Old 04-02-2009, 03:52 PM
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frankh frankh is offline
 
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Default Whats a compass?

I saw one once in a C152 I think...
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  #5  
Old 04-02-2009, 04:08 PM
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Default

Quote:
Originally Posted by frankh View Post
I saw one once in a C152 I think...
My 1941 T-Craft had one.
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A&P/EAA Tech Counselor/Flight Advisor
Specializing in Amateur-Built and Light-Sport Aircraft
<n168tx(at)flytx.net>
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RV-6 Flying since 1993
175hp O-320
3-Blade Catto (since 2003)
FRIEND of the RV-1
Eagle's Nest Mentor
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  #6  
Old 04-02-2009, 04:26 PM
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Ironflight Ironflight is offline
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Default

Mel congratulated me on a "complete panel" when he did my airworthiness inspection because I actually HAD a Correction card. It wasn't filled out, as I hadn't swung the compass, but he said that wasn't necessary - having the card and holder gave me a gold star!

Hey Mel - I actually filled the card out - about a year later....when I had nothing better to do....

Paul
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  #7  
Old 04-02-2009, 05:19 PM
zzapp zzapp is offline
 
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Location: Riga, Mi.
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Default Does it matter?

I rebuilt my compass and swung it. Spot on east-west, 1 degree deviation north -south. Let's be honest here. Who can hold a heading in one of these things plus or minus 1 degree? Do I still need the card? Yea, I know the answer, It's a hypothetical question.
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  #8  
Old 04-02-2009, 05:48 PM
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Jeff Brenhaug Jeff Brenhaug is offline
 
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Default

Easy to make in Excel and print on a sticky.
Pic attached.

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  #9  
Old 04-03-2009, 01:14 AM
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az_gila az_gila is online now
 
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Question OK Mel...

Quote:
Originally Posted by Mel View Post
If you have an adjustable whiskey compass, the correction card is required.
...which FAR actually requires the card?

I can't find one, even for my certified 77 Tiger.... It doesn't even appear as a required placard in my Maintenance Manual.

The FARs require the compass, but even the TSO for a compass (TSO-C7c)does not call out for a correction card. We have other instruments that have errors, and no correction card on the panel.

NOTE - I am not advocating no card, but with all of the ramp/DAR inspection talk, I can't find the regulatory requirement. Perhaps it's been around for so long, they just forgot to write it in...

NOTE 2 - I just found it for my Tiger, it's buried in the certification requirements of FAR Part 23 (23.1327 and 23.1547)
But part 23 requirements don't apply to Experimental Aircraft, do they?
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  #10  
Old 04-03-2009, 01:46 AM
Pirkka Pirkka is offline
 
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Default Compass correlation card in EFIS?

As this correction card is not needed much anyway but recommended or required here at least, does any EFISes support to write down information there? Ok, next you are going to say that I'll need compass when EFIS is not functioning anymore -- I agree, but correlation of couple degrees is most probably my least concern at that moment.
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