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  #1  
Old 02-22-2017, 08:59 AM
AlaskaRV AlaskaRV is offline
 
Join Date: Sep 2016
Location: Seattle
Posts: 32
Default Garmin G3X ahars hard failure

Just replaced GSU 25 because of hard failure, no oat,altitude or airspeed. Unit is only 9 months old. Flew one flight with no issues and encountered another hard failure on second flight taxi out. Any one else having issues with G3X ? They will replace part but no labor, any ideas?
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  #2  
Old 02-22-2017, 09:06 AM
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bhester bhester is offline
 
Join Date: Jan 2005
Location: Hopkinsville, KY
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Default GSU25

Quote:
Originally Posted by AlaskaRV View Post
Just replaced GSU 25 because of hard failure, no oat,altitude or airspeed. Unit is only 9 months old. Flew one flight with no issues and encountered another hard failure on second flight taxi out. Any one else having issues with G3X ? They will replace part but no labor, any ideas?
Been flying mine over 2 years and no problems with it. Should be an easy swap out, two connectors and 3 pitot/static lines.
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  #3  
Old 02-22-2017, 09:09 AM
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Brantel Brantel is offline
 
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Have you worked with TeamX to troubleshoot? I assume not since you are asking for ideas here on the forum.

If you have, advice is to follow their suggestions.

If not, contact g3xpert@garmin.com and they will take care of you.

Not heard of any GSU25 failures that were not explainable.

As for labor to replace, this is a super easy task as long as access to the unit is good. You will have to go back thru the calibration process called out in the manuals.
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Last edited by Brantel : 02-22-2017 at 06:45 PM.
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  #4  
Old 02-22-2017, 01:02 PM
bkthomps bkthomps is offline
 
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Location: Destin
Posts: 1,543
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i had a servo failure (GSA28), don't assume the equipment is faultless/bulletproof

traditional thought would have been that this is an experimental airplane and it has to be a wiring issue, but a quick RMA swap got me back up and running, glad I did not start rewiring things
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  #5  
Old 02-22-2017, 02:54 PM
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Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
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Quote:
Originally Posted by AlaskaRV View Post
Just replaced GSU 25 because of hard failure, no oat,altitude or airspeed. Unit is only 9 months old. Flew one flight with no issues and encountered another hard failure on second flight taxi out. Any one else having issues with G3X ? They will replace part but no labor, any ideas?
Not sure if you're saying you had 2 failures but thats the way I read it, if so I would double check the installation as its highly unlikly that you would have 2 ADAHRS failures. Good possibility its an install issue. I've installed a pretty fair number of these as well as have dual units on my own aircraft with 0 issues.
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EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
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Authorized Garmin G3X Dealer/Installer
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  #6  
Old 02-22-2017, 05:57 PM
maus92 maus92 is offline
 
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Location: Annapolis MD
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I've never had a problem with any of my G3X hardware (that wasn't caused by me )
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  #7  
Old 02-22-2017, 11:48 PM
AlaskaRV AlaskaRV is offline
 
Join Date: Sep 2016
Location: Seattle
Posts: 32
Default Garmin g3x

I have talked to Tim at Garmin, my avionics tech with over 40 years experience can't figure it out, Garmin is sending out another gsu25 because they believe this is the problem, Thanks
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  #8  
Old 03-17-2017, 11:16 PM
guims guims is offline
 
Join Date: Feb 2014
Location: Johannesburg
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Default G3X ahars failure

Yesterday after takeoff in my RV10 the AP kicked out due to loss of gps on the internal gps. I then had a dual ahars failure. The system then started to realign in flight. With no sucess. I landed immediately and tried to fault find with my avionics guy. Took off again and had gps working intermittently. Returned home. Am highly concerned about this and the dual ahars failure. Have emailed garmin. Eagerly awaiting their feedback.
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  #9  
Old 03-17-2017, 11:42 PM
F1R F1R is offline
 
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How many flight hours on your ship? How many flight hours with the G3X
What GPS navigator are you using? GTN 650?, 430W? And perhaps most importantly what age is the Ant. for the navigator GPS? There have been SB's issued for cerain age and serial # antenna in the past. There have been a few reports over the years of a single faulty GPS ant. making every GPS on the AC useless.

Usually when the faulty unit is shut off, the remaining good ones come back to normal. Also IIRC one or two cases of coax routing too close to a com line that takes out the GPS when the PTT makes a Tx and energizes the com ant. cable.

Some brilliant soul might assemble a section of common trouble shooting threads from past lessons learned and printed on this forum. One for common GPS faults, Alternator issues, etc. It might save the manufacturers and builders a lot of telephone and email time.
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  #10  
Old 03-18-2017, 06:20 AM
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Walt Walt is offline
 
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Quote:
Originally Posted by guims View Post
Yesterday after takeoff in my RV10 the AP kicked out due to loss of gps on the internal gps. I then had a dual ahars failure. The system then started to realign in flight. With no sucess. I landed immediately and tried to fault find with my avionics guy. Took off again and had gps working intermittently. Returned home. Am highly concerned about this and the dual ahars failure. Have emailed garmin. Eagerly awaiting their feedback.
First, I find it highly unusual that we have 2 first time posters with supposedly unexplainable simultaneous dual G3X failures.

Second, in a properly installed system with dual screens and dual ADAHRS (each screen has a built n GPS receiver and back up data lines to each ADAHRS) the chances of this happening to both systems simultaneously seems almost impossible unless perhaps you got hit by an EMP pulse!
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EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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