We have long believed that incidents and accidents involving drone safety must be investigated to understand their causal factors. While stressing that drones are “the safest form of aviation the world has ever known,” DJI complied, saying: Naturally, DJI was called in to support the investigation. According to the report, once the wind resistance limit had exceeded, the message triggered on the operator’s controller display said “Fly with caution, strong wind” – and not that the limit had been surpassed and that the drone should be landed as soon as possible. Meanwhile, the AAIB didn’t take kindly to another point – the manner in which the safety advisory was issued on the drone remote controller. So, it is probable that it was not fully pushed into place before takeoff. But this restriction is not referenced in the M210’s user manual, and neither the remote pilot nor the operator was aware of it.Ĭuriously, the disconnected battery functioned normally when fitted to another drone later. Accident site location and damage to DJI M210 droneĪn investigation into the episode by the Air Accidents Investigation Branch (AAIB) has revealed that shortly after takeoff, one of the drone’s two batteries had disconnected – which resulted in its maximum speed being restricted. However, it ended up colliding with the wall of a house and damaging its propeller blades before coming to rest on a balcony. When the battery got critically low, the drone entered into an auto-landing mode. The drone quickly drifted beyond the visual line of sight (BVLOS), after which communication with it was lost.
The drone was being flown during a police operation when the wind at 400 ft exceeded the forecast wind as well the maximum wind resistance limit stipulated by DJI. The incident took place on November 19, 2020, in southwest England.
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