I did a few searches and could not find an answer to this one. If someone knows of a thread or post to answer it, feel free to just point me at it.
This is something that works properly with FSUIPC 3.4.11 but not 3.51 or 3.53, hence I am posting the question here first. It may have nothing to do with FSUIPC, but it is the most obvious possibility at this stage.
The setup is MSFS 9.1 using metric controls (altimieter etc in metres, not feet). The only addon is FS Flight Keeper, which was also present with the older FSUIPC. If I use the autopilot to descend to say 600m, the descent stops at about 2000m, which coincidentally is the metre to foot ratio (2000ft is 609m). It's almost as though the altimeter is being converted to metres regardless of what is actually used. I get a similar result for other altitudes. I doesn't happen on an ascent, as I usually level off myself using the autopilot vertical speed (VS) control. If I get time, I'll test this on an ascent sometime.
Any ideas?