On the MAVIC AIR it's right hand exactly on the opposite position.
Watch this if you don't want to drill :-)
Mavic Air Remote Teardown and Dampen the buzzer so the RTH is not too loud.
SUPER cool ! Exact position to drill. I've drilled only 1.5mm and put a flat screw from an old ThinkPad dock. Thanks for the hack! This is a blessed relief (Y)