Help & Advice on an avionics upgrade path

[Learjetter]

I always thought those Garmin AFMS entries were "checkboxes" and the installer goes through the generic AFMS and tailors it to your installation be checking the various limitation boxes. No checkmark in the box means the limitation didn't apply to your installation. I'll read up more on it.

[patrolpilot]

Originally Posted by Learjetter

I always thought those Garmin AFMS entries were "checkboxes" and the installer goes through the generic AFMS and tailors it to your installation be checking the various limitation boxes. No checkmark in the box means the limitation didn't apply to your installation. I'll read up more on it.

That would make sense, jetter. I'm looking at a blank copy of the PDF on my computer. I'll be flying tomorrow, so I will look in the POH where the airplane's copy is.

What was required to enable the auto flight VNav, in respect to my two 430W, the Sandel 3308, and the 400A; was the last software upgrade on the 3308 to V2.3 ($1700)*, a 400hz inverter, and a King/Bendix autopilot adapter (which required a modification), and some additional hardwiring from the 430Ws to the 3308. Sandel provided the wire diagrams (shop kept them). My shop could not find the specific A/P adapter as they are out of production but knows the guy at Sandel, and he sent one to the shop without charge. Anyway, after a couple of weeks, my shop only works half a day, it was done. We went and flew the approaches, and the shop owner said, you are good to go. Selections between the two 430Ws and VHF Navs are through the selector on the 3308.

The APC pilot was very complimentary of my shop's integration; he said it was perfect.

*This is where I first considered the G5s as what started this was that my attitude indicator had failed, and it was good timing to take care of the VNav stuff. I learned that the G5 causes the 400A to away. With a nice flying 400A, that would be a lot of money spent to get back to the same capability. I bought a replacement attitude indicator and had the failed indicator repaired for $1150 altogether and keep the spare on the shelf. After the coming annual, I will find a spare 3308; they have gotten cheap and keep it on the shelf as well. That should last me another decade.

I've also not seen any other 3308s updated to 2.3.

[patrolpilot]

Originally Posted by patrolpilot

I've also not seen any other 3308s updated to 2.3.

I guess I just had to state it! I just got a saved search notice that a 3308 with 2.30 had been listed on eBay. Very little time on it; it was being held as a spare as well, so I made an offer, and it was accepted. Okay, I'm set with the important spares, so I'm good until I'm too old to do this. 430Ws are getting cheap; I might buy one when I see the right one.

[patrolpilot]

I follow a Seneca group and the G5s are even a bit more head scratching than our considerations. Got to really pay attention to the fine print.

[wslade2]

Patrolpilot,
Any chance you can get your hands on those wiring diagrams for Sandel 3308 and 400 autopilot interface?
I have Sandel 3308 too. Would like to interface it with the AP.
After reading your post, called Sandel today and their phone is disconnected. So it's looking like not going to get any further support from them.

[patrolpilot]

Originally Posted by wslade2

Patrolpilot,
Any chance you can get your hands on those wiring diagrams for Sandel 3308 and 400 autopilot interface?
I have Sandel 3308 too. Would like to interface it with the AP.
After reading your post, called Sandel today and their phone is disconnected. So it's looking like not going to get any further support from them.

I will ask them, I'm waiting for the shop to call me in as I have a transmit issue on my #2 430W.

Question, do you have the 2.3 WAAS software upgrade on your 3308? Apparently, few did it as it was $1700. No 3308s were manufactured in this version. Without that, you are stuck. The upgrade was serialized to the specific 3308, there is no way to upgrade any other unit other than the registered unit.

[wslade2]

Yes I have the 2.3 software upgrade.
I like the sandel unit. Was even thinking about going to the 3500
LED version. Such a shame. I guess this means no updates for background waypoints on the integrated map as I got my last update from Sandel?

[JeffAxel]

Originally Posted by wslade2

Patrolpilot,
Any chance you can get your hands on those wiring diagrams for Sandel 3308 and 400 autopilot interface?
I have Sandel 3308 too. Would like to interface it with the AP.
After reading your post, called Sandel today and their phone is disconnected. So it's looking like not going to get any further support from them.

their website is still active and the installation manuals can be downloaded from there.

[wslade2]

Appreciate patrolpilot's help!
I do have the install manual for SN3308 which I have studied for some time. But Patrolpilot mentions a "King/Bendix autopilot adapter (which required a modification)" and this came from Sandel. So sounds like important stuff. An autopilot adapter is not in the installation drawings from Sandel.