Sharing this info from another board: (1) Fastest way to take helicopter down - c4 on the drive shaft to tail rotor Fastest way to take plane down c4 on the rudder controls. (JFK Jr.) They've been doing this for decades. 7/10 Maintenance records previous flights / flight logs  gold mine. (2) the video I saw made it look like the tail rotor wasn't working and it was spinning out of control.