67E… do we have everything we need?

[ArrowBerry]

Hello Mooney experts, we have a 67E model and are looking at some upgrades for the annual this winter. This is the current panel. You can see I already have one G5 which is installed as the HSI with nav interface. It is connected to the GNX 375.

What I would like to do is put in the second G5 as the attitude indicator, ditch the vacuum system, and possibly add a nav/comm radio. At the same time probably rearrange and redo the panel on the left to accommodate this and make it look cleaner. So our question is, what all do we need to get this all hooked up? We only recently bought the plane so the previous upgrades were not done by us. I presume that since we already have the G5 HSI that we do not need to purchase the GMU 11 Magnetometer and the GAD 29 as the plane should already have this? Does that mean all we need is the G5 attitude unit itself and everything to hook it up and have both units working is already there? 

Also, regarding the radio installation. We’re looking at the GNC 255. Does anyone have an opinion about the 10W vs the 16W? Is that overkill for our machines or worth the extra $800? What would we need to use the 255 as the nav source for our G5’s? Does the existing GAD 29 do this as well or is a second one needed?

And last question, ultimately one day we want to have the GFC500 running all of this. Are all of these things compatible or are we setting ourselves up to have an expensive mismatch and components that won’t talk to each other? 

 

[hammdo]

The pic shows the G5 as an AI.

I just did this - if you don't have the GAD 13B (oat sensor), you'll want that. All you'll need then is just a G5 and have it hooked up!  Got rid of the stand by vac and pump too!
 

I'd get a new panel cut:

Here is mine (panel was already updated)

-Don

[Ragsf15e]

Compatibility is good as the G5 drives the gfc500.  If you decide to cut a new panel, leave room/cutout for the controller and definitely rearrange so you have the standard 6 pack with the PFD over the HSI.  Until you cut a new one, what you have works.

 I have dual G5s, but didn’t opt for the GAD13b as I already had an oat sensor and didn’t want another.  You won’t have wind or tas on the G5s, but you can likely input temp on the -375 and get them.  At least that’s what I do on my 430W.

 

[ArrowBerry]

Thanks for the replies. Sounds like we’re on the right track.

hammdo, you’re correct it is showing the AI in the picture, I usually have it on this page when I’m flying VFR. It can, however, be toggled to display the HSI. 

[carusoam]

It may be really important to know what version of G5 you have… what options it has…

And more importantly what options it doesn’t have…

As we have seen an issue where a pilot thought he had a back-up with a second garmin device… but when it came time to use the back-up…

Something didn’t work…. Resulting in flying in IMC without an attitude indicator…

That takes a lot of planning….  

PP thoughts only, not an avionics guy…

Best regards,

-a-