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GPS failure |
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AviJake 
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Joined: 26 Mar 2009 Location: Lincoln MA Status: Offline Points: 2815 |
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 Posted: 26 May 2015 at 5:21pm |
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Page 4-46 of the Pilot Guide defines the possible GPS states.
If on the ground and the system has not acquired a GPS lock within 3 minutes, you will receive a yellow "GPS Fault - No Position" CAS message. See page 6-5 of the Pilot Guide. If in the air and GPS is lost, you will receive a yellow "GPS Fault - Dead Reckoning" CAS message. See page 6-5 of the Pilot Guide. Or, as you note, you can look at the AUX page, SYS-GPS Status for detailed satellite lock information.
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Steve Jacobson
sjacobson@avidyne.com |
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chflyer
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Joined: 24 Jan 2013 Location: LSZK Status: Offline Points: 1022 |
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Posted: 27 May 2015 at 2:21am |
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Thanks Steve. So a yellow GPS indication without active flight plan leg is fine as long as there is no CAS message.
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Vince
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AviJake
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Joined: 26 Mar 2009 Location: Lincoln MA Status: Offline Points: 2815 |
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Posted: 27 May 2015 at 8:15am |
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Correct.
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Steve Jacobson
sjacobson@avidyne.com |
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cajungene
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Joined: 16 Apr 2015 Location: Virginia Status: Offline Points: 17 |
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Posted: 31 May 2015 at 4:35pm |
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I had multiple failures on 5/26/15. I've downloaded th logs and sent them to techsupport@avidyne.com. Is that sufficient or should I send them to a particular tech?
Gene |
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AviSimpson
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Joined: 31 Mar 2015 Location: Lincoln, MA Status: Offline Points: 765 |
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Posted: 01 Jun 2015 at 4:19pm |
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That email address is the best one to send logs to.
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Simpson Bennett
Avidyne Corporation Product Manager |
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scott
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Joined: 21 Aug 2013 Location: Danville, CA Status: Offline Points: 76 |
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Posted: 13 Jul 2015 at 11:06am |
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Just curious, for the people that were having GPS problems before 10.1 - have those problems been resolved? Did 10.1 fix the GPS lock problem?
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DavidBunin
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Joined: 20 May 2015 Location: Rockwall, TX Status: Offline Points: 742 |
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Posted: 13 Jul 2015 at 11:20am |
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I have almost ten hours flying behind version 10.1 now, and not a single GPS problem. That said, I only flew a few hours with version 10.0.3.0 and I never noticed a GPS problem then either.
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brou0040
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Joined: 13 Dec 2012 Location: KIYK Status: Offline Points: 720 |
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Posted: 13 Jul 2015 at 1:02pm |
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I haven't had any recent GPS issues. |
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teeth6
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Joined: 10 Mar 2014 Status: Offline Points: 741 |
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Posted: 13 Jul 2015 at 1:10pm |
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Mine has been fine also. No more GPS issues at all.
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ksdoc
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Joined: 20 Nov 2014 Location: Arizona Status: Offline Points: 46 |
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Posted: 14 Jul 2015 at 9:59am |
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Nope, didn't fix it for mine.
After leaving the shop, 5 minutes into flight home the GPS signal failed again! I just returned from vacation and during both legs, the signal dropped once. It lasted a few seconds and then reacquired. I had to reset the Aspen back to GPSS and SV, otherwise no significant issues. It has not had the same problem during initial startup as it did before, so there is a plus. So, having installed the unit back in October, I have not had one flight where the unit did not fail at some point during the flight! And I'm on my third replacement unit. Avidyne thinks they finally understand the problem and plan to send me a new 540 next week, so we'll see. I guess I'm one of the 'lucky ones'! :)
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kansasdoc
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VDH
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Joined: 08 Aug 2015 Location: Australia Status: Offline Points: 1 |
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Posted: 16 Oct 2019 at 12:16pm |
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I have a serious problem with my IFD540 where it consistently takes a very long time to acquire satellites. It takes between 10 and 30 minutes for the unit to acquire satellites and the unit reports a "GPS Fault. No Position". During this time the transponder does not transmit an ADSB-out signal. It also occasionally drops out for 30-60 secs while in cruise. I recently had the latest software update but it made no difference to this issue. I had my avionics shop download the logs a week ago and submit them to Avidyne. The download took an excessively long time - like a couple of hours. Despite having had them for more than a week, my avionics shop has had no response despite following up multiple times. Avidyne - what is going on??? The aircraft is essentially unairworthy (at least for IFR) with this fault. It is unreasonable not to even have a response after this length of time.
Edited by AviSteve - 19 Sep 2023 at 1:19pm |
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Mooney 20J
Mount Beauty, Australia |
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AviBryan
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Joined: 15 Feb 2018 Status: Offline Points: 8 |
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Posted: 16 Oct 2019 at 12:33pm |
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Hi VDH, I'm sorry you're seeing this issue. Have you reached out to Pilotsupport@avidyne.com or called our support line? I'm just trying to understand what you mean about not getting a reply in so long as this is the only post I see from you on this thread. My apologies if I'm overlooking the information but would you please email me at bkahl@avidyne.com with your contact information and Copy pilotsupport@avidyne.com. We will get you taken care of!
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