shawnd

Agree with @Pinecone check your HSDB settings; the database updates without FliteCharts are quick. FliteCharts itself isn't bad compared to Terrain database. But you only need to update that once in a blue moon.

One benefit I’ve really appreciated about the FS510 is the ability to update software on the go. When flying to remote locations, I can update the software at my hotel using just my flight iPads, then apply the update to the aircraft without needing a laptop, SD card adapter, or SD cards. The GTN can be updated while the airplane is powered on and the engine is running—just be sure to find a safe location away from passersby and lean out the engine. I use both an iPad Pro and an iPad Mini. Since the Pro has significantly better battery life, I use it for software updates while my flight iPad handles its regular duties.

On the GSB-15 issue: Gotta love my installer—Garmin's "switch to Dongle because the GSB-15 is finicky" response bothered him enough at 4 AM that he remembered some tips and went back to the airplane before delivery to double-check something. Sure enough, one of the crimp pins in the 6-pin terminal had broken off. However, due to the design, the wire remained neatly in place, making it appear intact at a glance or with a light tug. But if you pulled each wire individually, wire #2 would come loose. Apparently, this happens frequently. So if your GSB-15 data stops working, check that each wire and crimp pin is still properly connected.

Regarding the questions above - some points from my installation: The GMU is connected to the PFD per STC via HSDB. I believe you also have a GMU-44. If the PFD were to fail, the GMU is no longer part of the system and the standby will lose heading information. You will have to fall back on the magnetic compass. In G3X systems, they are connected via CAN bus so the standby is still able to communicate with the GMU to retrieve heading information. If you still have whiskey compass, should upgrade to the card compass or a PFD failure may lead you to emptying out the compass contents... The GI-275 standby could have its non ADI pages enabled but I believe it's not allowed per STC. In addition to point (2), the standby EIS pages can be activated as well to have 2 screens showing EIS data, but your GI-275 that is configured with the GEA-24 or GEA-110 is the primary. If that is shut down, EIS data won't be available on the standby's EIS page. With the latest greatest software versions, appropriate databases can be synced across all devices - I have tested with Concierge for the G500, GI275, GTN750 and GTN 650 using FlightStream 510 in the GTN 750. Once you have your system IDs, you go to fly.garmin.com and set up your devices for the aircraft and purchase the database subscription. I would leave the standby as is for safety and reduction of complexity. One of the local instructors recommended using the GTNs for navigation only and the G500 MFD for information reference. In my setup, I am planning on keeping the GTN 750 as the moving map with flight plan, 650 for textual navigation information and the G500 MFD for traffic/terrain/chart/etc. Although I am still finding Foreflight to be better at viewing charts than any instrument on the panel.

@gabez I'm really sorry you're going through this. It's frustrating to see. Have you tried refilling this side with 100LL? I'm curious if it's also leaking, possibly due to seal damage from the G100UL.

I did a run a while back, my first attempt: it was between 9.8 and 10.6. Since then there has been an IRAN so need to redo things - may or may not affect it. Definitely need to figure out a way to be smoother with turning the knobs.

Anyone know if there has been any recent update on UL100E? Any success with engine testing? Don't see anyone chiming in on it recently. Reference: https://aviationweek.com/business-aviation/aircraft-propulsion/avgas-developer-drop-fuel-100ll-not-possible

I just hope they survive so I can install GAMI injectors. Still in the ToDo column on my shopping list

In the M20K there is a small bulb above the O2 gauge inside the pilot side interior panel. That's 35 above in the IPC. 36 is the cutout if I am not mistaken.

I am now on the order queue with 2 different sources, not sure if any will pan out before July but hoping for the best. One sourcing from Boeing has already stated Jan 2026 "but may come in sooner".

@KER Tell the owner to sign up on MooneySpace if he isn't already

Despite the luke warm response, this is promising in my opinion. At least they are aware and working on something. We now know that they didn't release the AD and moved on to better things.

Correct. But to fly you don't need GP to use the EIS. It has a feature which can stream EIS data to GP while flying. But you can't access that immediately. It is sent up to the Garmin cloud for processing and then made available at a later date. If you didn't have GP, you can use the EIS instrument as is and then use the dongle to download EIS data for upload to your service of choice. GSB-15 is supposed to work, but apparently new updates are breaking it. It's annoying but I am falling back to what works and having him install the dongle in the slot beside the vacuum indicator since my electric standby has been removed.

The installer updated the software on the 275 and the GSB-15 wasn't able to pull configuration data for him anymore. When Garmin tech support was engaged, they cited GSBs can be finicky and to install the dongle. Dongle worked first time. I am going to diagnose this later - more urgent thing is to get flying again.

Yeah, the EIS data should be available for download via USB either through GSB-15 (apparently a finicky thing) and the USB dongle. I have two years of GP subscription available so I guess I am going to use it for what it's worth. GP already crashed on me during a recent taxi test... I have ForeFlight available and is still my primary EFB.

One reply I got: The only option would be to obtain an AMOC, or Alternative Method Of Compliance. I'm not sure if anyone is working on this. Anyone know what's required to get one of these? Could we perhaps motivate Mooney to help create one?

Looking good! I sincerely hope you have a better time once they pull the panel off and start working on the wire bundles. That's when the mysteries begin to pop up :-)

Agree with @PT20J, I rather have the funds go towards them working on the panel. They do provide connection schematics as required which is sufficient. But as others have said, technical folks want to go the extra mile and build out the full schematics for (1) better understanding their airplane (2) easier troubleshooting when the time comes (3) reduce cost on labor for future upgrades by not having to spend time guessing what goes where.

In the same boat. @Marc_B @MarcJohnson what are you guys doing?

Welcome aboard!

I am told Aviall stock is on backorder with expected availability January 2026!

Another update from the shop. Brings tears to my eyes … This was what it looked like before: Apologies in advance if I upload my panel pic in every post like @Pinecone

Yep, it’s now Feb 13. Maybe they wanted to wait to make it a Valentine’s Day present

Fresh from the shop -

They powered on a few things and is going through some initial setup. I promised to drive over with beer to motivate him some more Hopefully will have it back soon - then time for IFR and get ready for the trip in Sept.