What to do if the DJI Mavic 4 Pro detects magnetic interference before takeoff?

[AdminForo]

What to do if the DJI Mavic 4 Pro detects magnetic interference before takeoff: If the DJI Mavic 4 Pro detects magnetic interference before takeoff, the DJI Fly app will display a warning requesting compass calibration. In this scenario, it is best to move the drone to a different area, away from metal structures, vehicles, underground pipes, or surfaces that may distort the magnetic field. Ignoring this warning can cause the drone to become disoriented mid-flight and perform erratic maneuvers.

Compass calibration is performed by following a simple procedure within the app, which involves rotating the drone in different positions so the system can re-record magnetic references. It is important to perform this process in an open, interference-free area to ensure reliable data.

In some cases, the interference may be temporary or associated with the specific location of the drone. If the warning persists after several attempts, it is best to change location before attempting takeoff. Forcing a flight in these conditions significantly increases the risk of losing the aircraft.

The key is prevention. Calmly checking the surroundings before preparing for flight, avoiding metal floors, and always heeding app warnings are practices that ensure safer operations and prevent costly incidents.