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I like it fine, for exactly what it is: a supplemental indicator. I've found I need to tweak it's trim settings occasionally (trim settings are installer-made adjustments to the displayed values to ensure congruity with existing factory instruments--e.g. flying at 135 KIAS on airspeed indicator but seeing only 130 KIAS on AV-30C means the installer can adjust the airspeed trim +5 so the AV-30 display is more congruent with the factory airspeed indicator.) Trim +/- adjustments are available for altitude, OAT, Airspeed, roll, etc. See installation manual in my previous post. I attached 2 photos from my last sortie a couple days ago, to give you an idea what mine looks like inflight and how I installed it.
I do have an occasional issue with the airspeed showing above 40 KIAS while taxiing and occasionally when in the chocks, resulting in the unit switching to battery power instead of turning itself off when I flip off the avionics master. There's a force-off function to defeat this intermittent irritant.
Bottom line? It was an "easy" field-approved install, only cost about 3AMU$ total, and provides an electric supplemental AI, Alt, A/S, AOA, G-meter, or be a supplemental DG.
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