rickseeman Posted December 7, 2022 Report Share Posted December 7, 2022 I had my O in the avionics shop last week for other work and Garmin told him to disable my electric trim (not just pull the circuit breaker) until they come out with a fix for the GFC-500. Hopefully in a few weeks. Quote Link to comment Share on other sites More sharing options...
WaynePierce Posted December 7, 2022 Report Share Posted December 7, 2022 what do you have driving the GFC-500? GI 275? or something else? Quote Link to comment Share on other sites More sharing options...
rickseeman Posted December 7, 2022 Author Report Share Posted December 7, 2022 G5 Quote Link to comment Share on other sites More sharing options...
PT20J Posted December 7, 2022 Report Share Posted December 7, 2022 How many threads are we going to have on this issue? We may set a record! 1 Quote Link to comment Share on other sites More sharing options...
kortopates Posted December 7, 2022 Report Share Posted December 7, 2022 Just now, PT20J said: How many threads are we going to have on this issue? We may set a record! My thoughts exactly! But it will double when the fix comes out..... 1 Quote Link to comment Share on other sites More sharing options...
dzeleski Posted December 7, 2022 Report Share Posted December 7, 2022 2 hours ago, rickseeman said: I had my O in the avionics shop last week for other work and Garmin told him to disable my electric trim (not just pull the circuit breaker) until they come out with a fix for the GFC-500. Hopefully in a few weeks. Why? its not a mandatory SB nor an AD. The runaway only occurs at engagement if it occurs and is stopped by the AP disengagement button. My installer straight up said to do nothing other then monitor the trim during engagement and wait for the software update. 2 Quote Link to comment Share on other sites More sharing options...
rickseeman Posted December 7, 2022 Author Report Share Posted December 7, 2022 That's was my understanding also. I'm a little disappointed. Quote Link to comment Share on other sites More sharing options...
whiskytango Posted December 7, 2022 Report Share Posted December 7, 2022 51 minutes ago, dzeleski said: My installer straight up said to do nothing other then monitor the trim during engagement and wait for the software update. This makes sense. Personally I do not engage the autopilot until I am stable in climb and heading, and on top of any layers. That way if it does any Crazy Ivans on engagement it is not a major distraction to shut it off and manually re-trim with the trim wheel. Quote Link to comment Share on other sites More sharing options...
Greg Ellis Posted December 7, 2022 Report Share Posted December 7, 2022 My avionics shop had a required dealer webinar last week. Apparently, Garmin told them that the fix will be in Q1 of next year, not this year. Don't hold me to that. It is just what I heard from my A&P/IA. They also told my shop that they had to disable the trim. On the service alert it states that "Before further flight one of the following actions must be completed: Disable the GFC500 Autopilot by pulling the circuit braker and placarding it inop or contact a Garmin dealer to disable the pitch trim" My shop says they have to disable the pitch trim according to Garmin. Oh well.... Quote Link to comment Share on other sites More sharing options...
rickseeman Posted December 7, 2022 Author Report Share Posted December 7, 2022 26 minutes ago, Evan said: What did they do to disable it? He told me but I was so mad I didn't follow it. Something about the G5 I think. Quote Link to comment Share on other sites More sharing options...
ZuluZulu Posted December 7, 2022 Report Share Posted December 7, 2022 2 hours ago, PT20J said: How many threads are we going to have on this issue? We may set a record! Everyone who starts another one of these threads should have to donate $20 to MooneySpace! 1 Quote Link to comment Share on other sites More sharing options...
dzeleski Posted December 7, 2022 Report Share Posted December 7, 2022 1 hour ago, rickseeman said: That's was my understanding also. I'm a little disappointed. I would have told them to put it back and not change things that are not mandatory but thats just me. 1 hour ago, Evan said: What did they do to disable it? They disable the trim feature in the setup options. It basically disables the servo. Quote Link to comment Share on other sites More sharing options...
ArtVandelay Posted December 7, 2022 Report Share Posted December 7, 2022 It would be nice if there was an option to annunciate when the auto trim was operating. 1 Quote Link to comment Share on other sites More sharing options...
GeeBee Posted December 7, 2022 Report Share Posted December 7, 2022 I am sure it part of the dealership agreement with Garmin. Quote Link to comment Share on other sites More sharing options...
ilovecornfields Posted December 7, 2022 Report Share Posted December 7, 2022 57 minutes ago, ArtVandelay said: It would be nice if there was an option to annunciate when the auto trim was operating. My KFC225 says “trim in motion” if it has been on for more than a few seconds. Does the Garmin not do this? Quote Link to comment Share on other sites More sharing options...
Niko182 Posted December 7, 2022 Report Share Posted December 7, 2022 4 minutes ago, ilovecornfields said: My KFC225 says “trim in motion” if it has been on for more than a few seconds. Does the Garmin not do this? no Quote Link to comment Share on other sites More sharing options...
Niko182 Posted December 7, 2022 Report Share Posted December 7, 2022 I thought this issue only applied to the experimentals and LSAs Quote Link to comment Share on other sites More sharing options...
Jerry 5TJ Posted December 7, 2022 Report Share Posted December 7, 2022 56 minutes ago, ilovecornfields said: My KFC225 says “trim in motion” if it has been on for more than a few seconds. When the pitch servo in my KFC225 system failed and commanded full nose down trim, the system did calmly annunciate “trim in motion.” But I’d already noticed the significant pitch down, that’s for darn sure. 1 1 Quote Link to comment Share on other sites More sharing options...
PT20J Posted December 8, 2022 Report Share Posted December 8, 2022 2 hours ago, Niko182 said: I thought this issue only applied to the experimentals and LSAs No. Here's the actual document. (Ignore first page). 22109B_Time1670423254608.pdf Quote Link to comment Share on other sites More sharing options...
PT20J Posted December 8, 2022 Report Share Posted December 8, 2022 4 hours ago, ArtVandelay said: It would be nice if there was an option to annunciate when the auto trim was operating. I haven't tried it, but I think that if the trim runs away and creates a mistrim that you will get the TRIM UP or TRIM DOWN indication on the PFD. Quote Link to comment Share on other sites More sharing options...
kortopates Posted December 8, 2022 Report Share Posted December 8, 2022 I haven't tried it, but I think that if the trim runs away and creates a mistrim that you will get the TRIM UP or TRIM DOWN indication on the PFD.Good point. That is normal behavior for 2 axis installations without the electric trim when the AC gets out of trim.Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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