Help & Advice on an avionics upgrade path

[mshac]

Originally Posted by cjordan

I'd also like to lean on fellow Skymaster owners for advice on basic upgrades. VFR pilot looking to finish off Instrument.

I don't anticipate flying in heavy soup with low ceilings. Really just to get out, maybe on top with relatively decent weather at destination..or just won't go. Plan to set pretty moderate personal minimums another words.

1973 "G" model, currently has:
Stec 55x w CWS
GNC300XL
KN64DME
KR87 ADF
2 MX-170B with KI209A Glideslopes
KT76A transponder with Avionix Tail beacon
Strikefinder
Eaton Annunciation push switches to control what feeds autopilot, glideslopes, etc.
I use Stratus 2 and Fore-flight

Thinking for training (and usefulness) to add Waas/GPS capability.

Am looking at adding one of following:
Garmin GPS175
Garmin GNC355
Garmin GNX375
Probably a G5 HSI or AV30

Have thought about a used 430 or 530, but for what they cost along with installation thought it might be better to go with a unit mentioned above. Obviously can dump the GNC300 and tail beacon if need be and likely the ADF.

All input appreciated )

The Uavionix AV-30C is not certified for any twin engine aircraft, including the Skymaster. I was very disappointed to learn this, as I felt it would be a nice upgrade to my mechanical AI.

The Garmin G5 is certified for the Skymaster, and most light twins. Not that I'm a Garmin fanboy by any means, but Garmin wins this one (as far as twins go!).

[hayesjaj]

Originally Posted by mshac

The Uavionix AV-30C is not certified for any twin engine aircraft, including the Skymaster. I was very disappointed to learn this, as I felt it would be a nice upgrade to my mechanical AI.

The Garmin G5 is certified for the Skymaster, and most light twins. Not that I'm a Garmin fanboy by any means, but Garmin wins this one (as far as twins go!).

With a 55x your best bet may be the Aspen. They have a software unlock that allows the Aspen to play directly with the 55x as a mode controller with altitude select. Could start with an E5 and upgrade it to a full when you need the power.

[wslade2]

I have a Uavionics AV-30 and a couple years ago asked them to include Skymaster on their AML list when they went for their certification. I got an email from them advising skymaster was approved before I took delivery of my certified AV-30 and have spoken with them throughout certification process.
However, in terms of driving legacy autopilots discussed on this thread, it is of no help.

[mshac]

Originally Posted by wslade2

I have a Uavionics AV-30 and a couple years ago asked them to include Skymaster on their AML list when they went for their certification. I got an email from them advising skymaster was approved before I took delivery of my certified AV-30 and have spoken with them throughout certification process.
However, in terms of driving legacy autopilots discussed on this thread, it is of no help.

Show that email to the FAA ramp inspector and see how far it gets you. Or to the NTSB investigator after an accident/incident. You have an "Unapproved installation" which grounds your aircraft immediately, and threatens your pilot's license as well. I was castigated on this site for using non-PMA LED landing lights, but they were endorsed by the Bonanza Society, so I knew they were good lights. I understand the rules don't always make sense. But the risks are very different here. You best have a canopy cover whenever you park at a public airport. Prying eyes will cause you grief. The AV-30 is well-known in the aviation world, and most serious inspectors know its only approved for single engine aircraft. I don't agree with the logic, but I don't agree with the hassle it could cause either.

[Learjetter]

Originally Posted by mshac

Show that email to the FAA ramp inspector and see how far it gets you. Or to the NTSB investigator after an accident/incident. You have "Unapproved installations" which grounds your aircraft immediately, and threatens your pilot's license as well. The FAA takes this very seriously, I can assure you. Don't learn the hard way.

Might be able to install under NORSEE as a AoA indicator, but I agree, not as primary replacement without bona fide STC via AML & permission letter.

[wslade2]

I understand the comments and appreciate them.
I had noted their AML list did not include 337 when I checked their website few weeks ago and have been meaning to call them to see what's up. But the e-mail saying "Cessna 337 has been added to the AML list" exists. I just pulled it up again to check my memory. So I will call to clarify.
Avionics installer was also comfortable with it when we ordered unit and conferred with them.
However, with caution I have retained my OEM AI...plus it drives my legacy autopilot.
I believe my personal next step beyond the legacy stuff I have would be an Aspen and STEC autopilot.

[Learjetter]

I talked to some senior guys at Garmin recently. They intend to add 337 to G500txi Engine Indication System to STC and GFC autopilot. When?? “In the fullness of time” is what I remember thinking...