Force Arm Error: Command rejected by MAV

thatsnailguy · August 28, 2026, 3:58pm

MP 1.3.83 ArduPlane 4.6.3 & 4.7.0

Did MP miss the change to the magic number to force arm? I cannot force arm from the Quick menu anymore.

EDIT: After further tinkering. on 4.7.0 I can force arm to bypass most checks except for RC. I need RC in order to force arm

Eosbandi · August 28, 2026, 5:08pm

There were no changes in the force arm/disarm and force arm magic numbers

thatsnailguy · August 28, 2026, 5:24pm

I havent done it in a while, but I am pretty sure that I remember being able to force arm without RC previously.

so the 4.6.0 change:

didnt deprecate or change the function of force arm in mission planner?

Should I not expect be expecting “Force Arm” to work how I am expecting?

EDIT: Silly me quoted the rover 4.6 release not the plane

rmackay9 · August 28, 2026, 10:39pm

I guess you’re using plane but I don’t see a log so it’s a bit of a guess but I suspect it depends upon the flight mode.

I just tested Plane-4.7 in SITL with RC disabled in Manual and was able to force arm.