Anyone else experiencing this since the hot fix release on 7/30? Despite the CTD’s, this wasn’t a problem for me with SU5 prior to the hot fix. I’ve only flown the TBM, so I don’t know if it’s a problem specific to that plane. Doesn’t matter whether the altimeter is standard above FL180, or something else above or below standard pressure, ATC always thinks I’m several hundred feet lower in altitude than I really am. I’ve checked my altitude with the correct current pressure set at several airports with known elevation and the plane seems to be correct, so I can only assume something isn’t being correctly interpreted by ATC.
Please refer to this issue.