Big VIP planes, to reach any unprepared/short landstrip without any problem like an helicopter, but with a cruise speed at 28.000 ft over 800 mph

1 - Turbofans ON/OFF - Without TF the plane flies like an helicopter. With TF ON it flies like a jet. Deactivating 1 TF goes at zero.
2 - Brakes ON/OFF - You need it separate from engines because you need rotors at at least 5% to land. and the brakes active without any èèpressed key are so handy.
VTOL - rotors lift. More high you are, more lift you need.
TRIM - Trim. You need it based on speed, altitude and thrust.

The plane can vertically take off and land. With turbofans activated it is surprising agile.

NOTICE: The plane can NOT fly without the help of rotors.