Difference in Garmin autopilots

  • Kent Dellenbusch
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3 days 6 hours ago #3727 by Kent Dellenbusch
Replied by Kent Dellenbusch on topic Difference in Garmin autopilots
Let me ask.

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  • Ed Fogle
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3 days 6 hours ago #3726 by Ed Fogle
Replied by Ed Fogle on topic Difference in Garmin autopilots
Thanks so much Mikayla. That’s good info. I still wonder why they are working on an interface between the 600 and Aspens but not the 500 which is approved for my aircraft and much less expensive.

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3 days 15 hours ago #3724 by Kent Dellenbusch
Replied by Kent Dellenbusch on topic Difference in Garmin autopilots
Hi Ed. I have received a reply from Mikayla at GARMIN. I hope this helps.
Hi Kent,

I apologize for the delay on getting back to you about this. I have included a detailed description below of the autopilots. Feel free to post what you would like on the forum to answer this question.

Engineering Differences:

The GFC 500 and GFC 600 use different mode controllers – the GFC 500 uses the GMC 507, whereas the GFC 600 uses the GMC 605 which has a built-in annunciator panel
The GFC 500 uses the GSA 28 autopilot servo, whereas the GFC 600 uses the larger GSA 87 servo since the GFC 600 is intended for heavier aircraft
The GFC 500 relies on a Garmin AHRS source from the G3X Touch, G5, or GI 275 whereas the GFC 600 can use AHRS information from a non-Garmin. The full list of compatible third-party attitude and heading sources can be found here à static.garmin.com/pumac/190-01488-00_h.pdf#page=14
The GFC 500 uses the Garmin AHRS source as the annunciator panel for the autopilot, whereas the GFC 600 sometimes needs to use an external autopilot annunciator panel for legality reasons (if the GMC 605 is placed out of primary view of the pilot)

To answer the other questions from the forum post directly:

There is not one autopilot that is superior to the other – they both have the same features and functionality
If trying to decide between the GFC 500 and the GFC 600 autopilot for your airplane, your airplane likely falls under the GFC 500 or GFC 600 STC, but not both. Only the Cessna 182 and Beechcraft A36 Bonanza are approved for BOTH autopilots – all other aircraft models are only approved for the GFC 500 OR the GFC 600, but not both.

For future requests like this, I am the one to handle editorial content/questions like this whereas Sydney manages paid content! I’m always happy to help! Let me know if you need anything else.

Thanks,
Mikayla

Mikayla Minnick
Public Relations Specialist
Garmin International

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2 weeks 1 day ago #3708 by STEVE ELLS
Replied by STEVE ELLS on topic Difference in Garmin autopilots
Hi Ed,
I do not know the differences.
I suggest you contact an avionics installed you trust.

Sorry,
Ste e

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  • Ed Fogle
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2 weeks 2 days ago #3705 by Ed Fogle
Difference in Garmin autopilots was created by Ed Fogle
I had assumed the Garmin G-600 autopilot was just an upgrade to the G-500. I’ve read they are entirely different design wise. Can anyone tell me the engineering differences and is one superior to the other? How do they compare capability wise?

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