Originally Posted by
Mark van Wyk
What is the average expected lifetime for a $600 - $1,000 overhauled vacuum-driven attitude indicator? I'm getting a newly-purchased OH AI installed today -- NOT from TGH.
Under normal conditions, no unusual attitudes, I fly average 50-75 hours a year, usually weekly, parked outside with canvas cover, Rapco vacuum pump, average suction. Clean filters and lines, etc. C-150.
How long? I would hope AT LEAST 350 hours/three years .
Is it better to buy new? I'm seeing prices averaging $2.5K to $5K for new ones.
Digital?
I really enjoyed training for IFR and I like keeping my plane IFR current and I like to stay IR current. An AI is required equipment for certified IFR-legal planes. So, I have no choice but always have a working AI.