Just had to shutdown the sim in midflight, because during cruise, A/T, LNAV and VNAV all engaged, the T7 started to depart from its track and CRZ FL, climbed at high rates, speed went into stall area.

 

No way to stop the bird from doing this, neither HDG SEL nor FLCH would work.

 

Disengaged A/T and A/P, brought her back to stable flight, and re-engaged A/T and A/P.

 

Then history started to repeat itself ...

 

Tried a 3rd time with ASN off (wx changing to 'clear day' in FSX) - no joy either.

 

Anyone else who can confirm?

I have kind of the same problem, hand flying though. At about 1500feet AGL my PFD and NAV screens freeze and my nose goes about 25 degrees up, can't control anything either, complete loss of control

Thanks, Kevin.

 

In my case, I had complete control in manual flight.

 

Just trying to recreate my own issue, can't reproduce it so far.

Same here as well. Departed from track in a stall

Can't recreate my own issue anymore.

 

Posted the same topic in a different forum with lots of active SP1 users; nobody over there could confirm my findings.

 

If it wasn't for you, Zoran, I'd think I was imagining things.  

looks like both of you are imagining the same thing   guess if it doesn't happen  again and no one lese reports  the same issue  as you, you can call it fsx gremlins at work ^_^

I have the issue with LNAV deviations. 

A flight from OMDB-LTBA ended up flying back to OMDB!

 

I'll try a new flight and see what happens

if it happens again.....try deleting the FSUIPC.ini.

Had a similar experience Olli.

 

I started descending and the plane started banking left off course and descending rapidly. Displays and controls froze and couldn't hand fly it. It just carried on veering left and downwards and plummeted. Ticket is in.

Deleting the FSUIPC.ini file did not help - I updated FSUIPC, deleted it, same result