Hello, all. On my way from Florida to Indiana a week ago in my M20E my instruments started going crazy. First I noticed fluctuations in airspeed indicator, VSI, altimeter, so I thought for sure I had a pitot/static issue. Then I noticed my nav instruments going crazy as well. I have a back up AI over on the copilot side that flipped upside down. It is very old so very well could be going bad.
I have flown 3 time since then and everything is still acting up. Unfortunately cannot get the plane over to my mechanic until next week but just wondering what your guys thoughts are. Realize it could be a number of things including grounds, static leak, shock mounts, engine mounts, unbalanced prop, etc...but wondering if anyone has ever seen this. I have not noticed any new vibrations at all. Had a similar issue in lancair last year but did not see the fluctuations in navigation instruments.
Josh