My Mavic Air will notr even take off if theres any kind of magnetic interference. Is this not true with other mavic's?????
As @msinger says - the aircraft cannot necessarily detect magnetic interference. All it measures is the total magnetic field, from which it subtracts its internal magnetic field (determined by the calibration) to leave the external (presumed to be earth's) magnetic field. Unless that magnetic field is outside the threshold parameters that it has set, it will assume that it defines north, and happily take off.