New Garmin panel coming!

[PT20J]

On 1/3/2022 at 9:13 PM, Ragsf15e said:

So with this in mind, can you connect Bluetooth from the GTX345 directly to your foreflight or audio panel and get the full traffic calls again?

I experimented. The GTX is already paired with the iPad and I don’t get any audio from the GTX on the iPad. The GTX and PMA450B won’t pair — probably because GTX doesn’t output audio over Bluetooth. So I’m pretty sure the GTX traffic voice is a hardwire audio connection only. 

Garmin support agreed to submit an enhancement request to Team X engineering to have G3X annunciate traffic range, bearing, and altitude.

Skip

[larryb]

So in that rats nest of wiring I see an avionics cooling duct hose. A few weeks ago somebody posted here that they needed a new avionics cooling fan. A responder posted something along the lines of "You still have one of those? Modern avionics don't need/use a cooling fan."  GTN's and the Aspen's that I have all have their own fans and don't rely on a central fan. That made me think about my own panel upgrade. Sure enough, I still had the noisy central avionics cooling fan and all of the hoses were stuffed here and there but didn't actually connect to anything. I thought my shop did a really good job and I have no complaints, but apparently they missed this one. After it was finally removed the first time I turned on the master things were so quiet I thought the panel was broken.

[carusoam]

Some E-gear are easier to unknowingly accidentally engage than others…

 

Mine is so easy to goof up… it gets its own step in the check list… 

if an electronics tech were to remove the seats for better work space…

There is a likelihood that latch is no longer secure in my plane…

-a-

[ArtVandelay]

So in that rats nest of wiring I see an avionics cooling duct hose. A few weeks ago somebody posted here that they needed a new avionics cooling fan. A responder posted something along the lines of "You still have one of those? Modern avionics don't need/use a cooling fan."  GTN's and the Aspen's that I have all have their own fans and don't rely on a central fan. That made me think about my own panel upgrade. Sure enough, I still had the noisy central avionics cooling fan and all of the hoses were stuffed here and there but didn't actually connect to anything. I thought my shop did a really good job and I have no complaints, but apparently they missed this one. After it was finally removed the first time I turned on the master things were so quiet I thought the panel was broken.

My J has two hose attachments to the right side air vent, so no fan needed as fresh air gets piped in. I capped 1, but have 1 feeding air to the back of my left stack.

[rbp]

10 hours ago, larryb said:

Modern avionics don't need/use a cooling fan

good point. i will have them look at them

[rbp]

On 1/3/2022 at 8:48 PM, PT20J said:

assume you are aware that the GI 275 will be a standby instrument only with no connection to the G3X, GFC 500 or navigators and requires it’s own GPS antenna. If so, and that’s what you want, great. But if not, realize that the G5 is a better choice as the G3X can use the G5 ADAHRS should the GSU 25D fail and the G5 can drive the GFC 500 should the G3X fail.

After a long discussion and a fair bit of research, I am switching to the G5.

the GI-275 is definitely a more capable instrument, with a brighter screen and a faster processor.

But in a G3X configuration, it ONLY acts as a single-page ADI, with no lateral or vertical guidance. None of the other 8 pages of information are available.  (works as a full instrument with the G500)

[PT20J]

3 hours ago, rbp said:

After a long discussion and a fair bit of research, I am switching to the G5.

the GI-275 is definitely a more capable instrument, with a brighter screen and a faster processor.

But in a G3X configuration, it ONLY acts as a single-page ADI, with no lateral or vertical guidance. None of the other 8 pages of information are available.  (works as a full instrument with the G500)

It's unfortunate that Garmin doesn't explain this better. A lot of details are hidden in the installation manual (including the supplement for a specific aircraft) which is not available except to Garmin dealers. 

[PT20J]

While I was having my system installed, I began to ponder how I would know that everything was working properly and configured the way I expected. So I made a couple of checklists -- one for ground and one airborne. These are specific to my installation (G3X/ G5/ GFC 500/ PMA450B/ GTN 650Xi/ GNC 255/ GTX 345) and now that I know more I would change some things, but perhaps this will provide a starting point should you decided to do something similar.

Skip

G3X Ground Check.xlsx

G3X Flight Check.xlsx

[rbp]

Thanks I’m updating this checklist we made in 99! 
 

 

[hais]

On 1/5/2022 at 9:41 AM, rbp said:

i thought a lot about this. I'd rather have 2 x IFR GPSes and 1 NAV, rather than 1 IFR GPS and 2 NAV.  The likelihood of a GPS signal outage and a simultaneous VOR/ILS receiver outage is quite low.  

EDIT:
if the 750 fails, I have an IFR GPS in the 355.
if the 355 fails, I have the IFR GPS/NAV in the 750.
if there's a GPS  signal outage, i have fly ILS/VOR approaches in the 355
if there's an ILS outage, i can fly an LPV approach

the only time I'm screwed is if the 750 fails while there's a GPS outage.  I'll take those odds.

This is my reasoning as well. The one question I have is whether there’s a software issue that would fail 750’s ILS/VOR capability because of GPS failure mode that isn’t isolated. Has anyone experienced GPS outage and were able to proceed with VOR navigation on their 750/650?

[rbp]

9 hours ago, hais said:

This is my reasoning as well. The one question I have is whether there’s a software issue that would fail 750’s ILS/VOR capability because of GPS failure mode that isn’t isolated. Has anyone experienced GPS outage and were able to proceed with VOR navigation on their 750/650?

I plan for a single failure by having a backup. I don't plan for double failures bc there are just too many possibilities. if the GPS signal fails, I fall back to the terrestrial signals

[LANCECASPER]

9 hours ago, hais said:

This is my reasoning as well. The one question I have is whether there’s a software issue that would fail 750’s ILS/VOR capability because of GPS failure mode that isn’t isolated. Has anyone experienced GPS outage and were able to proceed with VOR navigation on their 750/650?

Sometimes one bad GPS antenna sends enough interference to take out the other one, but powering down the bad one should take care of it. Either way the nav antenna or software that deals with VOR/ILS shouldn't be affected. 

[rbp]

19 hours ago, PT20J said:

While I was having my system installed, I began to ponder how I would know that everything was working properly and configured the way I expected. So I made a couple of checklists -- one for ground and one airborne. These are specific to my installation (G3X/ G5/ GFC 500/ PMA450B/ GTN 650Xi/ GNC 255/ GTX 345) and now that I know more I would change some things, but perhaps this will provide a starting point should you decided to do something similar.

Skip

G3X Ground Check.xlsx 14.57 kB · 10 downloads

G3X Flight Check.xlsx 18.36 kB · 3 downloads

i just read through these more carefully. well done! will use. thanks

[rbp]

Went for a visit today and everything is coming along nicely.

the tail box is noticeably emptier. Only the skywatch and weather boxes left, and the remote transponder. They were both inop, which turned out to be a broken altitude encoder that was feeding both. 

Plus the big King servos have been replaced by little Garmin ones. The middle photo is the electric pitch trim
 

[rbp]

Everything is out, plus a hella lot of wire and vacuum lines. The avionics fan and hoses are still in but will be removed. They haven't removed the vacuum pumps yet either

 

[rbp]

On 1/5/2022 at 11:20 PM, ArtVandelay said:

Now is an excellent time to change your defrost/avionics cooling hoses, they look old.

had them all inspected and replaced as necessary. thanks!

 

[StevenL757]

On 1/5/2022 at 12:41 PM, rbp said:

i thought a lot about this. I'd rather have 2 x IFR GPSes and 1 NAV, rather than 1 IFR GPS and 2 NAV.  The likelihood of a GPS signal outage and a simultaneous VOR/ILS receiver outage is quite low.  

EDIT:
if the 750 fails, I have an IFR GPS in the 355.
if the 355 fails, I have the IFR GPS/NAV in the 750.
if there's a GPS  signal outage, i have fly ILS/VOR approaches in the 355
if there's an ILS outage, i can fly an LPV approach

the only time I'm screwed is if the 750 fails while there's a GPS outage.  I'll take those odds.

First-off, congrats on a really cool panel - when it's done.

Second, the GNC355 does not have VOR/LOC capability, and will not fly an ILS, LOC, or VOR approach...it is WAAS GPS only, and COM.

Let me know if I mis-interpreted...

[Skates97]

On 1/21/2022 at 2:19 PM, rbp said:

The middle photo is the electric pitch trim
 

I am sure you will check everything out before take-off, but check your trim for full range of motion before it leaves the shop. I had gone through everything, then started up and went out to do my run-up. While configuring for take-off I found the trim would not travel full range. Call ground, ask for taxi back to the shop, the shop looked at me like "uh-oh." It was a simple fix, but if I had checked for full travel it would have saved me some time.

When they disconnected the trim tubes to put the pitch trim on someone must have inadvertently turned one of the tubes so that when the reconnected them it was off.

[rbp]

21 hours ago, StevenL757 said:

the GNC355 does not have VOR/LOC capability, and will not fly an ILS, LOC, or VOR approach

correct. i decided to forego a second NAV radio because the probability that the 750 fails while there's a simultaneous GPS outage,  at whatever particular airport I happen to be landing at IFR is miniscule.  

[rbp]

Went to the avionics shop yesterday 

Everything in the tail compartment is done

Everything in the wings is done ( photo #1 shows @Microkit LHS and Garmin AOA probe under the R wing)

Everything in the engine compartment is done (photo #2 shows EGT probe)

The wiring harness is almost complete (photo #3)

The metal panel is being fabricated 

[PT20J]

Nice.

When I was considering the GAP 26 AoA I looked at various installation locations. Garmin requires that the probe tip be located no farther aft of the leading edge than 25% of chord. It's hard to tell from the picture, but that location looks farther aft than that. You might want to double check with the shop.

Skip

[Baker Avionics]

7 hours ago, PT20J said:

Nice.

When I was considering the GAP 26 AoA I looked at various installation locations. Garmin requires that the probe tip be located no farther aft of the leading edge than 25% of chord. It's hard to tell from the picture, but that location looks farther aft than that. You might want to double check with the shop.

Skip

Skip, that's the left wing, he had it installed on the right wing!  BTW, when are you coming to 3S8 to visit?

[PT20J]

1 hour ago, Baker Avionics said:

Skip, that's the left wing, he had it installed on the right wing!  BTW, when are you coming to 3S8 to visit?

Planning on some trips when the weather improves. Do you have a booth at the Northwest Aviation Conference this year?

[Baker Avionics]

14 hours ago, PT20J said:

Planning on some trips when the weather improves. Do you have a booth at the Northwest Aviation Conference this year?

That's great!  We actually have 2 and will have 9 demo panels as well. 

 

[cloud116]

Attached is my new panel, and I love it, including the layout. The shop suggested pilot and co-pilot lemo plugs, which suggestion I followed. So glad I did.
The only thing I don’t like is that I had to mount my phone in bottom left corner, and it is in the way of the ignition key. I’ll likely re-position that to far right. I use the phone for timing (Lab Timer) and backup checklist app (if you do not use Mira Check, check it out. A smart checklist (changes depending upon circumstances)  is like having a co-pilot.  I recently had an issue with my gear not going down. I hit two buttons in Mira and it immediately starting giving me audible instructions on what to do. Which makes me think of how thankful I am to have the 450B audio panel with Bluetooth to ForeFlight and my phone. 
I had same trouble with power trim not capable of full travel. They are working on it now.