Officially we will add optional Jet engine Physics and VFX (flames and smokes) + modification of Input System to allow navigation for the character in flight-mode.
Now the AI-OS code is mature enough to participate in ignition, taking off and landing and turning off the engines.
Majority of the games in the market their engines and other instruments are fake, at CCN Studios we like to teach our players and designers to build Systems.
More on that if there are interests by VRoid community.