Re: Old good FSX
Posted: Tue Dec 18, 2018 5:54 am
Of course it was AP problem. Triggered by baro altitude change 1200 feet in half of second at FL500.
I'm also seeing this problem; I've posted onto the main forums and I'll investigate further.
There are two parts to the issue;
1) it appears that the outside pressure is changing almost instantly for an as yet unknown reason.
2) The autopilot in your aircraft can't handle the sudden pressure change.
The F-15 holds altitude fine; possibly because to maintain M2.5 it requires the engines to run at 100% with a degree of thrust augmentation.
I'm not an expert on the upper atmosphere - however lower down you certainly can get rapid pressure changes as the aircraft flys through different airmasses; so the autopilot should be able to handle this.
I'll investigate(1) to see if I can figure out what is happening - but also the autopilot should be fixed on your model.