Strange AI pushback behaviour (pitch)

[1582549 (Chris Warner)]

I posted this in the other thread a while ago:

vPilot showing incorrect model orientation when the user is using GSX pushback

I have been investigating this over the past few days as I was intrigued to see if we could set the sim state on the aircraft as Umberto suggested. Unfortunately its bad news, whilst you can set this flag on the aircraft it does not fix the issue. It would seem that this is an underlying simulator issue where the velocity vectors are being continually calculated when the aircraft is frozen by GSX. These values are what vatsim / multiplayer are using to create the smooth animation we see between…

I think it is possible to fix via VPilot but they would need to ignore velocity vectors whilst on the ground and calculate the aircraft movement using another mechanism.