According to my panel builder who already ran the required network cables in my harness, I just pin out the connectors and replace the config module. Otherwise the existing connections and mount holes are reused.The available tube videos for upgrading from G3x to Axis seemed a lot more involved than my easy swap expectations. It looked like there might have been 4-5 owner/shop personnel working on the planes along with 2-3 Garmin staff for install and it took 3-4 days. Even just calling it 40 hours of labor @ $125 per hour would be 5K to pay someone to upgrade. They also seemed to put in dual IFR GPS units without discussing reasons for such.
The upgrade for my other brand PFD was quite simple. Download everything to USB. Unscrew and unplug, replug and re screw, turn on and download all files. Maybe 30 minutes.
Why spend the money for two IFR GPS when it could be so easy to pull out a phone/tablet and run FF or GP as back up?
How little time might it take for a G3x to Axis upgrade?
Why the Axis name and is it related to the Axis boating products used by that one brand of boats?
G3x has been a great product. Ignoring the widgets, is there a way to compare the compute power or processing speed of the two? Perhaps a chart comparing them? What makes this a huge step change as opposed an apple iPhone 16 to 17 upgrade situation? ( I looked at phones yesterday)
Can this be configured to show flap position?
Trim position?
Door not latched annunciator?
I have been informed the GTR20 is compatible even though I do not see it in the LRU list. Good News.Does AXIS work with a GTR20? That is my current Comm 2.
if you are talkinng about midwest panel videos, they did a complete panel, harnesses an accessories REPLACEMENT. I wouldn't call that an upgrade.The available tube videos for upgrading from G3x to Axis seemed a lot more involved than my easy swap expectations. It looked like there might have been 4-5 owner/shop personnel working on the planes along with 2-3 Garmin staff for install and it took 3-4 days. Even just calling it 40 hours of labor @ $125 per hour would be 5K to pay someone to upgrade. They also seemed to put in dual IFR GPS units without discussing reasons for such.
The upgrade for my other brand PFD was quite simple. Download everything to USB. Unscrew and unplug, replug and re screw, turn on and download all files. Maybe 30 minutes.
Why spend the money for two IFR GPS when it could be so easy to pull out a phone/tablet and run FF or GP as back up?
How little time might it take for a G3x to Axis upgrade?
Why the Axis name and is it related to the Axis boating products used by that one brand of boats?
G3x has been a great product. Ignoring the widgets, is there a way to compare the compute power or processing speed of the two? Perhaps a chart comparing them? What makes this a huge step change as opposed an apple iPhone 16 to 17 upgrade situation? ( I looked at phones yesterday)
Can this be configured to show flap position?
Trim position?
Door not latched annunciator?
Seems like but not what available evidence shows.if you are talkinng about midwest panel videos, they did a complete panel, harnesses an accessories REPLACEMENT. I wouldn't call that an upgrade.
they completly removed components like ifr gps, audio panel and com/nav and installed GDU116NCs
If you reuse existing harness and devices, seems like it would be pretty straight forward. In my case I will have to add 3 ethernet connections and repurpose the GDU connector. maybe a 3-4 day work by myself. not bad
If you are referring to the Aviation 101 and Midwest Panel builders, they decided to replace the entire harnesses and remove their radio stacks completely because they put dual IFR GPS/NAV/Com units in and ditched the original gear.. That was a ton of extra work that most will not have to do.The available tube videos for upgrading from G3x to Axis seemed a lot more involved than my easy swap expectations. It looked like there might have been 4-5 owner/shop personnel working on the planes along with 2-3 Garmin staff for install and it took 3-4 days. Even just calling it 40 hours of labor @ $125 per hour would be 5K to pay someone to upgrade. They also seemed to put in dual IFR GPS units without discussing reasons for such.
The upgrade for my other brand PFD was quite simple. Download everything to USB. Unscrew and unplug, replug and re screw, turn on and download all files. Maybe 30 minutes.
Why spend the money for two IFR GPS when it could be so easy to pull out a phone/tablet and run FF or GP as back up?
How little time might it take for a G3x to Axis upgrade?
Why the Axis name and is it related to the Axis boating products used by that one brand of boats?
G3x has been a great product. Ignoring the widgets, is there a way to compare the compute power or processing speed of the two? Perhaps a chart comparing them? What makes this a huge step change as opposed an apple iPhone 16 to 17 upgrade situation? ( I looked at phones yesterday)
Can this be configured to show flap position?
Trim position?
Door not latched annunciator?
It depends on what your definition of “upgrade” is.The available tube videos for upgrading from G3x to Axis seemed a lot more involved than my easy swap expectations. It looked like there might have been 4-5 owner/shop personnel working on the planes along with 2-3 Garmin staff for install and it took 3-4 days. Even just calling it 40 hours of labor @ $125 per hour would be 5K to pay someone to upgrade. They also seemed to put in dual IFR GPS units without discussing reasons for such.
The upgrade for my other brand PFD was quite simple. Download everything to USB. Unscrew and unplug, replug and re screw, turn on and download all files. Maybe 30 minutes.
Why spend the money for two IFR GPS when it could be so easy to pull out a phone/tablet and run FF or GP as back up?
How little time might it take for a G3x to Axis upgrade?
Why the Axis name and is it related to the Axis boating products used by that one brand of boats?
G3x has been a great product. Ignoring the widgets, is there a way to compare the compute power or processing speed of the two? Perhaps a chart comparing them? What makes this a huge step change as opposed an apple iPhone 16 to 17 upgrade situation? ( I looked at phones yesterday)
Can this be configured to show flap position?
Trim position?
Door not latched annunciator?
It depends on what your definition of “upgrade” is.
I have 2 GDUs, a GTN and a GNC.
Upgrading my displays will be trivial. 3 x HSDB and some minor repinning.
Those MWPB videos IMHO are not representative of what most upgraders will do. They were practically new installs - which is not so trivial.
The G5 will enable the autopilot to continue operating in all available modes in the case of the failure of the Primary AXIS display. A GAD 29 would not be relevant to your installation, you have no external IFR Navigator.@g3xpert Mostly from scratch panel upgrade planned for an RV6, looking at redundancy if the AXIS screen goes dark.
Planned equipment:
Single GDU116C w/LRU kit - IFR gps, comm, audio panel
Gtr205x - second comm
G5 for standby ADAHRS
GTX45r -adsb in/out txpdr
GMC507 - a/p ctrl
6ah standby battery
Engine monitoring will stay on existing CGR30
Are these assumptions correct if the GDU116C goes belly up in IMC:
G5 will be fully functional for aircraft control and will still be able to drive A/P? Is Gad29 required/beneficial?
Will gtr205x be available for comms with ATC for step down instructions to VFR wx/declaring an emergency and using iPad GPS functionality to get below min vectoring altitude if fuel is a concern?
Will GTX45r still provide txpdr info to ATC and fail to 7700 in this case? And is there any connectivity from GTX45R to display ads-b traffic and wx on an iPad if the GDU116C has failed?
*also, if I set altimeter on G5 will it crossfill to axis? Gad29 needed for this?
Yes, you can connect the GTR 205 via HSDB and eliminate the CAN connection. The Transponder does not support CAN connections so there is no issue there.In addition to two of the 11" AXIS screens, I plan to have the following HSDB devices: GTN750Xi, GTR205, and GTX45R.
1) Can I eliminate the CAN connection to the radio and transponder? Would there be any benefit to retaining the CAN Bus connections?
2) I was already planning on an HSDB connection between the GTN750Xi and GTX45R. Instead do I now connect all three devices each to two screens, and the two screens to each other? Can the screens handle that many HSDB connections?
The GAD 29 can be used for a backup path to an external IFR Navigator.G3Xpert or anyone that might be in the know. . .
I am already in contact with my shop. I just want to clarify, the Gad29 does not need to be removed? Will act as a redundancy to AXIS. My panel thankfully has probably just the amount of space to slide right in to the 460 cut out. My main concern after that, is the set up. Is there a method for transferring all of the data, set up and features on my current 460 directly to the AXIS or should we expect to start from scratch? Are there any major changes required to harness? If this goes as seamlessly as it sounds like it might, then for those of us fully immersed in the Garmin ecosystem, they seem to have gone above and beyond to make it an easy upgrade.
Anybody want to buy a 460?
View attachment 122631
AXIS cannot act as the control head for a GX Pilot.My RV8 still has a Tru Trak GX Pilot controlled by a non-touch G3x (including GMC305 MCP). Will Axis support this interface?
-Greg
This is exported as a helpful record of configuration of your G3X Touch system that you can send to our support team, should you need assistance from us during any part of the process.Question regarding the upgrade process. The instructions state that one should export the configuration to a file from the G3x Touch before removal, but does not give instructions to import into the new AXIS screen. Is an import an options or will one have to manually reconfigure for example all sensor and other data?
Not at this time.Does AXIS support DME-DME navigation with the GDM450R?
There are database plans formed around the AXIS system, specific to experimental installations, intended to serve the various iterations of the system specifically.On the Garmin mapping page a single price is given for the experimental AXIS mapping bundle.
Can you please confirm that the mapping bundle pricing is the same for the GDU116Bx, GDU116C and GDU116NC ?
With 2 x G3X Touch there is a config module in the PFD connector allowing the System ID to be used by both GDU460.
This allows a single mapping bundle to be purchased and used on both GDU460.
Can you confirm a single mapping bundle is all that is required to be purchased for 2 x AXIS units ?
With a GDU116C (PFD) and GDU116Bx (MFD) I believe you can add a GTR205 remote radio.
If the PFD fails is the remote GTR205 usable ?
Does AXIS support the GCO14 carbon monoxide detector ?
We agree. Each system should be designed with redundancy for critical information in mind.After a quick scanning of all 140 posts, I have not read that anyone is concerned about having all functions needed for flight in one box. I would be very concerned about the lack of redundancy in the system unless I knew more about how it may fail and if it does so gracefully. If you want the redundancy then you can always buy two or buy some individual boxes/instruments.
Just me as a conservative engineer but think it needs to be considered.
HDMIWhat type of video input does the new display support? I'm hoping this was also updated to a new type.
GDU 80Px fits in the same panel cutout as the GDU 470. The installation kit is available now, it is the same kit you would use for a GDU 116Bx.Will the GDU 80Px fit into the same panel cutout as the existing 470? Is the connector kit be available now if the unit itself is not?
With two GDU116C, would I need to buy two DB update plans or just one will work on both?
It is likely that the AXIS system will result in a weight reduction. If you want to send your parts list to us we can help you determine exactly how much. Reach out to us at [email protected].All of this is quite exciting but so far, I haven't seen anything posted discussing the potential change (reduction?) in weight. I know that, for many, weight can be an afterthought when putting together a dream panel but it's something I care deeply about and even a few pounds can make quite a difference in overall decision making. Presumably, all this integration and reduction in overall part count should reduce the system weight, right? But by how much?
A remote controller is an option the team has been investigating.@g3xpert
I know it's early to be starting a wish list, however...
Has there been any thought to adding a keyboard like the GCU 479?
This would be your external COM. If the audio panel fails, it closes a relay that connects to the external COM in the system, assuming it is less likely to have a problem than the COM on the same board as the audio panel which has failed.Question for @g3xpert-
I am trying to understand the fail safe audio in A.1.5.13 of the install manual and the interconnect diagrams. Just want to confirm that in the unlikely event that the internal audio panel fails, the pilot's left headset, mic, and PTT are connected to whatever is wired as AUX1 (whether it is another Axis device or an external COM). Can you confirm? Is there an interconnect diagram I'm missing?
YesDoes AXIS work with a GTR20? That is my current Comm 2.
The available tube videos for upgrading from G3x to Axis seemed a lot more involved than my easy swap expectations. It looked like there might have been 4-5 owner/shop personnel working on the planes along with 2-3 Garmin staff for install and it took 3-4 days. Even just calling it 40 hours of labor @ $125 per hour would be 5K to pay someone to upgrade. They also seemed to put in dual IFR GPS units without discussing reasons for such.
The upgrade for my other brand PFD was quite simple. Download everything to USB. Unscrew and unplug, replug and re screw, turn on and download all files. Maybe 30 minutes.
Why spend the money for two IFR GPS when it could be so easy to pull out a phone/tablet and run FF or GP as back up?
How little time might it take for a G3x to Axis upgrade?
Why the Axis name and is it related to the Axis boating products used by that one brand of boats?
G3x has been a great product. Ignoring the widgets, is there a way to compare the compute power or processing speed of the two? Perhaps a chart comparing them? What makes this a huge step change as opposed an apple iPhone 16 to 17 upgrade situation? ( I looked at phones yesterday)
Can this be configured to show flap position?
Trim position?
Door not latched annunciator?
Why would they do this? It makes no sense and they have not done that before.I asked;
On the Garmin mapping page a single price is given for the experimental AXIS mapping bundle.
Can you please confirm that the mapping bundle pricing is the same for the GDU116Bx, GDU116C and GDU116NC ?
With 2 x G3X Touch there is a config module in the PFD connector allowing the System ID to be used by both GDU460.
This allows a single mapping bundle to be purchased and used on both GDU460.
Can you confirm a single mapping bundle is all that is required to be purchased for 2 x AXIS units (say a GDU116C and a GDU116Bx) ?
g3xpert replied;
There are database plans formed around the AXIS system, specific to experimental installations, intended to serve the various iterations of the system specifically.
Ongoing mapping costs are a significant part of a purchasing decision.
Can you please provide the information requested ?
Not providing this information makes it appear that as you go up in unit features the mapping subscription price also goes up.
It could also be interpreted that Garmin intends to charge mapping bundles per unit rather than the G3X Touch model of per aircraft (up to 6 display units).
Or this:If Claude is correct (and it's not always), then even the minor dimension changes between AXIS and G3X are going to mean that some of the pre-built panels will need redesign. Here's a mockup of Aerosport's 310 panel for RV-10, for example. Good to consider for those building now.
View attachment 122690

No intention of being cryptic. Someone from our sales team will put together an overview of this topic for the group here. I mentioned that in a different response. Apologies.I asked;
On the Garmin mapping page a single price is given for the experimental AXIS mapping bundle.
Can you please confirm that the mapping bundle pricing is the same for the GDU116Bx, GDU116C and GDU116NC ?
With 2 x G3X Touch there is a config module in the PFD connector allowing the System ID to be used by both GDU460.
This allows a single mapping bundle to be purchased and used on both GDU460.
Can you confirm a single mapping bundle is all that is required to be purchased for 2 x AXIS units (say a GDU116C and a GDU116Bx) ?
g3xpert replied;
There are database plans formed around the AXIS system, specific to experimental installations, intended to serve the various iterations of the system specifically.
Ongoing mapping costs are a significant part of a purchasing decision.
Can you please provide the information requested ?
Not providing this information makes it appear that as you go up in unit features the mapping subscription price also goes up.
It could also be interpreted that Garmin intends to charge mapping bundles per unit rather than the G3X Touch model of per aircraft (up to 6 display units).
No need to apologize and thank you for taking the time to respond to all of our questions here. It's very much appreciated!No intention of being cryptic. Someone from our sales team will put together an overview of this topic for the group here. I mentioned that in a different response. Apologies.
Yes this will work the same way it does for a G3X Touch and external IFR navigator.Do I understand the manual correctly that the function of TO/GO still exist with the 116NC in the absence of a GMC 507. Would the A/P still follow the commands from the internal navigator for the missed approach?
I wonder if the same thing happens with the GI 275 ?If Claude is correct (and it's not always), then even the minor dimension changes between AXIS and G3X are going to mean that some of the pre-built panels will need redesign. Here's a mockup of Aerosport's 310 panel for RV-10, for example. Good to consider for those building now.
View attachment 122690
To expand on the display itself, the COM/NAV/Audio Panel functions are a separate board within the display, with its own dedicated power input, separate from the IFR GPS board.
LOL, check the classifieds here.@g3xpert (or anyone)
If the only Garmin component I have in my panel is a GPS175, if I were to connect a G3X 8" portrait to it, how functional would the G3X be?
Thinking that once the AXIS 8" units are available, there will be a lot of G3X units on the market.
No intention of being cryptic. Someone from our sales team will put together an overview of this topic for the group here. I mentioned that in a different response. Apologies.
As mentioned in again another post, database package pricing will be similar to a G3X Touch system with an IFR navigator.
So, I'm just wrapping up a new panel and installed the following HSDB connections for two 116bx displays:As a point of reference, it’s not a hard upgrade from an existing panel.
In a system with dual G3’s, 750xi, gtx45, gdl69a, we installed two 116Bx displays. Original install HSDB was just GTN—>GTX45R and GTN—>GDL69A.
New HSDB is PFD—>GTN750—>GTX45–>MFD—>PFD, with a single leg from GTN—>GDL69A.
Alternatively you could leave the GTX45R as a branch from GTN—>GTX45R as well, and just add HSDB from PFD–>GTN—>MFD—>PFD. Really quite simple.
Add 3 power and ground wires to each GDU connector, replace the configuration module in the PFD and add a config module in the MFD, and start configuring.
We left all other systems in place as we used base units and kept the GTN.
As stated, an easy weekend for first time, much less for second time probably.
Yup looks good. We didn’t bother doing our GTR as we already had existing CAN BUS run to everything, but the HSDB is recommended as the best connection.So, I'm just wrapping up a new panel and installed the following HSDB connections for two 116bx displays:
From my understanding this is what is called out.
GTX45R - GTN
GTX45R - PFD
GTR205R-MFD
PFD-GTN
MFD-GTN
PFD-MFD
That’s interesting power in on J1011, not really sure what that would be used for? Some type of keep alive?Yup looks good. We didn’t bother doing our GTR as we already had existing CAN BUS run to everything, but the HSDB is recommended as the best connection.
On a side note it is recommended to install power to J1011 P3.
It’s for future updates in connectivity but for now just add power to help maintain some memory. Just tie it in with the other power.That’s interesting power in on J1011, not really sure what that would be used for?
I think I saw something referring to update on GTR will require the HSDB (I had the CAN already hooked up but adding HSDB in case it’s needed).
The case does not have provisions to change internals, there’s only plugs for what’s needed. You also can’t buy a F350XL and then upgrade it to a Lariat.Which raises an interesting question wrt upgrade paths:
Is there an intention to supply COM/NAV boards to enable field upgrades of GDU 116 to GDU 116NC?
(it's not unusual in the E/AB world to cost-control by starting with a VFR build and progressively upgrading it to IFR later)
- mark
Well, can you answer my question? My intent would be to acquire a used 8 inch G3X when the similar size of AXIS is available. And I understand that will not be until 2027. Unless I missed something the current offerings of pre owned G3X are only the full size version. Perhaps I should have been more clear.LOL, check the classifieds here.
Thank you, this is great. I would love to have a GMC507 on my panel but unfortunately there is no room for it since I am putting a 8" Portrait in the center stack.Yes this will work the same way it does for a G3X Touch and external IFR navigator.
The difference is there are fewer wires to run in most cases. Only one inout to the sysem is required. That could be the TOGA input on a GMC 507, or a configurable discrete input on a GEA 24, or a GDU 116C/NC, etc. You used to have run a switch to both the G3X Touch system, and the external navigator. GMC 507 is one of many options, but not required.
Greetings VAF community,
We apologize that this fix has been slow in coming. We have the problem identified and addressed. At this point, we are working to ensure that we have enough testing on these and the other features we have been hard at work to bring you! While many of you are experiencing this on a regular basis, we have to ensure that our testing is representative of all environments. As usual, we are working to balance the inevitable complications and priorities.
While we do not have a specific release date to offer, we will keep you posted as things progress. Thank you again for your continued patience.
Thanks,
Justin
Glad we’ve avoided the sad trombone sound for our 305/307s, the Betamaxes of autopilot controllers.Justin -
Thank you for the quick replies. One more question - the GMC507 is listed in the install manual as an AXIS LRU. Does this imply that those of us with GMC307s would have to change to the 507 to be AXIS compatible?
Dave
I'm configuring differently and will have room, but to your point I would love if there was another format of GMC 507 available (like portrait vs landscape). It would let those of us with tight panel real estate like 8s fit more in there.I would love to have a GMC507 on my panel but unfortunately there is no room for it since I am putting a 8" Portrait in the center stack.
The 3D SafeTaxi is really, really cool. A much better way to visualize what’s going on. Kudos to the Garmin folks who dreamed that up.Where I really like the new AXIS display, the two things I really like, is the 3D SafeTaxi and Runway Occupancy Awareness displays. Will this capability be available in the next G3X software update?
The 3D SafeTaxi is really, really cool. A much better way to visualize what’s going on. Kudos to the Garmin folks who dreamed that up.
Does Axis support importing flight plans from ForeFlight? I saw in the user manual that it will import flight plans from Garmin Pilot but no reference to ForeFlight.
I use my G3X to import and send flight plans to the GTN.
Now that's funny right there, I don't care who you are!Glad we’ve avoided the sad trombone sound for our 305/307s, the Betamaxes of autopilot controllers.![]()
A.1.5 Functional Descriptions@g3xpert
In addition to two of the 11" AXIS screens, I plan to have the following HSDB devices: GTN750Xi, GTR205, and GTX45R.
1) Can I eliminate the CAN connection to the radio and transponder? Would there be any benefit to retaining the CAN Bus connections?
2) I was already planning on an HSDB connection between the GTN750Xi and GTX45R. Instead do I now connect all three devices each to two screens, and the two screens to each other?
It looks like each screen can only handle two HSDB connections so I'm wondering how to wire all of this? Do I stick with CAN Bus for one of the devices even though it supports HSDB?
So if I buy two basic screens with only three HSDB connections each, I'm short one connection per screen. How can/should I wire that?A.1.5 Functional Descriptions
A.1.5.1 HSDB (Ethernet)
All displays include three HSDB ports on connector J1012.
GDU 116C and GDU 116NC include an additional HSDB port on connector J1013.