AIRCRAFT DISSAPEARS AHHHH

Hi everyone happy new year
Ive recently made a new flight plan ect but when the aircraft sits on the taxi-way and calls for clearance it disappears when it is asked to go to tower frequency or in other words clear for takeoff. Is it something to do with the AIRFILE for that aircraft its not compatible my other aircraft have no problems. Ive tried to move a AIRFILE to this aircraft im having trouble with but it still disappears .must be the twilight zone ha
can anyone help
cheers flyingbart
Ive recently made a new flight plan ect but when the aircraft sits on the taxi-way and calls for clearance it disappears when it is asked to go to tower frequency or in other words clear for takeoff. Is it something to do with the AIRFILE for that aircraft its not compatible my other aircraft have no problems. Ive tried to move a AIRFILE to this aircraft im having trouble with but it still disappears .must be the twilight zone ha
can anyone help
cheers flyingbart
