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12-11-2008, 12:18 PM
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Join Date: Feb 2008
Location: Taylorsville, GA
Posts: 748
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Compass
Is a compass required for airworthiness certification?
The FARs require a "magnetic direction indicator." The Dynon EFIS box has that. Is a seperate / conventional compass still required?
VFR only - obviously.
__________________
Jeff Rhodes - Taylorsville, GA
RV-9, 7 - going fast
BC-12D - going slow
jrhodes@v1salesmgt.com
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12-11-2008, 12:42 PM
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Join Date: Oct 2007
Location: Jackson, MS
Posts: 1,262
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Day or Night?
Quote:
Originally Posted by JDRhodes
Is a compass required for airworthiness certification?
The FARs require a "magnetic direction indicator." The Dynon EFIS box has that. Is a seperate / conventional compass still required?
VFR only - obviously.
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Day VFR - Not Required
Night VFR - Required
http://www.rainierultralightengines....quirements.pdf
Personally, I would like to have a backup whiskey compass.
I also use it to set my DG.
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Webb Willmott
Jackson, MS
N32WW
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12-11-2008, 12:51 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Like Webb says, for day VFR it is not required. For night the Dynon meets the requirement in 91.205.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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12-11-2008, 01:23 PM
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Join Date: Jul 2006
Location: Corvallis Oregon
Posts: 3,547
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Hmm..Not so sure
I never found anything other than a "magnetic direction indicator"..even for IFR..
Am I wrong here..i never did fit a compass.
Frank
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12-11-2008, 01:28 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Nope, you're not wrong.
Quote:
Originally Posted by frankh
I never found anything other than a "magnetic direction indicator"..even for IFR..
Am I wrong here..i never did fit a compass.
Frank
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The Dynon meets the requirement for IFR. There are some inspectors that question this, but it meets the definition in the regs.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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12-11-2008, 01:57 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Mel is correct on all counts. (No surprise there!)
For my inspection I Velcro'ed a compass to the glair shield and then removed it after the guy left, just so I wouldn't have any issues. Good thing as the guy had never seen a homebuilt with a glass screen before. Go figure.
For the backup thing, I figure the Garmin 496, with its internal battery will get me home should the Dynon D100 with its internal battery goes Tango Uniform.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
Last edited by N941WR : 12-11-2008 at 03:24 PM.
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12-11-2008, 03:02 PM
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Join Date: Feb 2008
Location: Taylorsville, GA
Posts: 748
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yeah, We've got a Garmin in there too - Doesn't everybody? Both it and the Dynon point north automatically.
Thanks for the help! Ask and ye shall receive.
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Jeff Rhodes - Taylorsville, GA
RV-9, 7 - going fast
BC-12D - going slow
jrhodes@v1salesmgt.com
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12-11-2008, 03:11 PM
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Join Date: Apr 2005
Location: KSLC
Posts: 4,021
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Quote:
Originally Posted by JDRhodes
yeah, We've got a Garmin in there too - Doesn't everybody? Both it and the Dynon point north automatically.
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I suppose I like redundancy. A Garmin 696 on the left, magnetic compass in the middle, and Lowrance 600C on the right. No Dynon....yet 
L.Adamson --- RV6A |
12-11-2008, 04:07 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Garmins don't have a compass.
They tell you the direction the aircraft is traveling, but not which way it is pointing.
From a practical stand point they are great, but technically they are not a "magnetic direction indicator".
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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12-11-2008, 04:11 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Quote:
Originally Posted by N941WR
For my inspection I Velcro'ed a compass to the glair shield
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When I built my Moni motorglider, the kit came with flight instruments. The included compass was a $1.99 unit from WalMart on a suction cup. It met the regs!
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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