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09-30-2012, 09:22 AM
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Join Date: Dec 2010
Location: Doncaster England
Posts: 57
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Intermittent GPS failure on GNS430
Has anyone had an intermittent GPS failure on GNS430 ?
I have an intermittent loss of GPS signal? . I can fly for days without any problems then for no apparent reason the gps will go off for a while before coming back on.
I flew to London Yesterday,the gps was inoperative for 50 minutes of the hour it took to fly there.
On the way back it was fine ? I haven?t replaced anything yet, my guess is to replace the coax and antenna any suggestionsare appreciated
RV-7
Antenna location underneath the upper cowling
Thanks
Mark
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09-30-2012, 07:21 PM
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Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,330
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Mark, yes, seems to be an elusive problem though... There is at least one other long thread about this, search for 430 and gps and I'll bet you find it.
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Alex Peterson
RV6A N66AP 1700+ hours
KADC, Wadena, MN
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10-01-2012, 03:37 AM
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Join Date: Dec 2010
Location: Doncaster England
Posts: 57
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thanks Alex i will have a look
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10-01-2012, 08:03 AM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 211
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GPS 430
I have a Garmin 420. Before I upgraded it to a 420W, I would occasionally get a lost of GPS signal for the display, first time it happened was on the way into Sun 'n Fun way back then. Turned out to be the BNC cable/antenna connection under the cowl. Cleaned up the copper tip and worked fine. After the 420W upgrade with its screw in fitting and different antenna, I have had no problems.
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Stu McCurdy (Falcon)
RV-8, 78TX, Flying
Formation Flying, Inc (FFI)
Falcon Flight
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10-01-2012, 08:08 AM
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Join Date: Mar 2009
Location: Rochester NY
Posts: 669
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Plus 1
BNC connectors - find the appropriately rated technician to do a "certified" disconnect & reconnect.
Dan
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RV7A (N7101) - Flying 10/2008
CFI- SE/ME/Inst
A&P
KC2ZEL
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10-01-2012, 09:03 AM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Long story on my issue with a 430W here.
Keep in mind mine was a 430W which uses a different antenna than the 430.
So far so good on the final fix which was a new antenna. Had no issues since. Fingers crossed that it stays that way.
Garmin and Stein were very helpful getting me to this point. |
10-01-2012, 06:53 PM
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Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,330
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Brantel, check back when you have about a year on it without problems. I've had mine go almost that long without a failure, then three in two months, etc.. I hope the antenna fixes yours for good, but...
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Alex Peterson
RV6A N66AP 1700+ hours
KADC, Wadena, MN
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10-01-2012, 09:10 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by AlexPeterson
Brantel, check back when you have about a year on it without problems. I've had mine go almost that long without a failure, then three in two months, etc.. I hope the antenna fixes yours for good, but...
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Fingers crossed... |
10-02-2012, 01:12 PM
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Join Date: Feb 2007
Location: tyndall,sd
Posts: 20
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Mark, I had the same issue you are. Taking a few minutes with an ohmmeter checking the continuity of the of the coax while wiggling the center contacts of the BNCs might be worth the time. I found my issue this way. Cheap and quick fix.
Joe
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10-02-2012, 05:18 PM
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Join Date: Dec 2010
Location: Doncaster England
Posts: 57
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Thanks Guys for the help here, As my connectors are crimped on i will start with a new coax and connectors. Cheap fix would be great; I would rather buy AVGAS than spend on an antenna 
Cheers
Mark |
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