AP: PreArm: Throttle (RC3) is not neutral issue occurred

Hello All,

I’ve played with SITL and QGC.
Build and run SITL works fine, but 2nd flight always occurs in error.
The issue said that “AP: PreArm: Throttle (RC3) is not neutral”, but I can’t find any solution for this issue.
Does anyone help me out?

Sincerely,

Use this command in mavproxy:
rc 3 1000

Thanks for the reply.
I commanded as you said, but it didn’t work.
I attached the log below.

STABILIZE>
STABILIZE> rc 3 1000
STABILIZE> Got COMMAND_ACK: REQUEST_AUTOPILOT_CAPABILITIES: ACCEPTED
Got COMMAND_ACK: SET_MESSAGE_INTERVAL: ACCEPTED
Got COMMAND_ACK: REQUEST_PROTOCOL_VERSION: UNSUPPORTED
AP: ArduCopter V4.2.0-dev (12e1f673)
AP: 31ef74d75e634d4ab838411126f80396
AP: Frame: QUAD/PLUS
Got MAVLink msg: COMMAND_ACK {command : 11, result : 0, progress : 0, result_param2 : 0, target_system : 255, target_component : 190}
GUIDED> Mode GUIDED
Got COMMAND_ACK: COMPONENT_ARM_DISARM: FAILED
AP: PreArm: Throttle (RC3) is not neutral

I found why issue is occurred.
Virtual Joystick in QGC is the one that occurred.
Please uncheck the auto center throttle.