Setvelocity would be the way to go.
If you setvelocity incrementally (10, 20, 40, 80 ,160), it will look ok for the camera
,
but if the planes travel too fast (>100 or so) before they get off the deck, they will crash.
The A.I. recovers from setvelocity just fine, so once they are off the deck, they'll fly normally