The helicopter is at an altitude of 80 meters. Motors_interlock_disabled why!_

ArduCopter V4.0.4
tower Ground station

log download https://drive.google.com/file/d/18NU41_JqMTcqATpHs_xYG8H7O8OZkWr7/view?usp=sharing

RC10_option = 41 (arm/disarm)
You disarmed the copter via RC10 channel from the remote controller.

PILOT_THR_BHV 7
throttle stick is in the middle
So the flight controller will also be DISARM?

PILOT_THR_BHV

has nothing to do with separated disarm switch. If you use an arm/disarm rc switch option, then it will disarm the copter/heli regardless of throttle position.

Thank you very much for your reply