What does the failed takeoff warning in the DJI Fly app indicate?

[AdminForo]

What does the failed takeoff warning in the DJI Fly app indicate: The failed takeoff warning that may appear in the DJI Fly app when attempting to initiate a flight with the DJI Mavic 4 Pro indicates that one of the drone's critical systems has detected a condition that prevents a safe takeoff. This notification can be due to multiple reasons, such as errors in the IMU or compass calibration, unstable conditions on the takeoff terrain, a weak GPS signal, or insufficient battery voltage. The system is designed to prevent takeoff until the issue is resolved to protect the integrity of the equipment and prevent incidents in the air.

One of the most common scenarios for this warning occurs when the drone is positioned on an inclined, reflective, or unstable surface. The down-focus sensors are unable to identify reliable patterns for initial positioning, leading the system to prevent takeoff for safety reasons. In other cases, the problem may be related to incomplete or incorrect compass calibration, especially if the drone has recently been transported or is in a location with high magnetic interference.

The warning may also appear if the battery temperature is outside the optimal operating range. In cold climates, the battery may require a few minutes of warm-up before reaching the appropriate temperature for flight. Similarly, if a takeoff is attempted with battery levels below the safe threshold, the system will block the action until it is sufficiently charged. This preventive logic prevents mid-air shutdowns due to lack of power, especially during the critical takeoff and initial climb phase.

When faced with this warning, the best practice is to stop, carefully review the detailed message in the app, and resolve the issue before attempting again. Forcing a takeoff while ignoring warning signs can put the drone at risk and compromise flight safety. The Mavic 4 Pro's ability to detect adverse conditions before allowing takeoff demonstrates the high level of automation and protection built into its design, offering a significant advantage to both novice and experienced pilots.