The British agency exploring aeronautics mishaps AAIB recommends professional drone pilots to regularly exercise flying in ATTI mode, where the drone does not make use of GPS for placing. The factor is a current case with a DJI M600 Pro, which became adrift throughout an assessment flight and flew into a house numerous meters away.

Fly-away after GPS mistake

The case concerned took place on December 13, 2019, with the assistance of a DJI M600 Pro, a study was performed over a port area. At one point, the drone offered a GPS error and changed to manual control. By the time the pilot and also the viewer saw that the drone no longer reacted to the go back to house (RTH) command, the drone had actually currently been lugged away by the wind and ran out view. A few hundred meters away, the drone crashed into a residence and ended up in the garden. Nobody was harmed in the process

In an attempt to recover the crashed drone, the team made a decision to remove a second M600 Pro drone, in order to search for the missing out on gadget. That drone also provided an error message at some point, this time pertaining to interference. This time around, the pilot was able to intervene on time and safely ground the airplane.


The Air Accidents Investigation Branch was hired to examine the fly-away. An M600 Pro, consisting of haul, rapidly considers more than ten kg, and if such a drone ends up on a person from a height of 6 meters, it can finish fatally. Partly therefore, the incident was immediately classified as a major case with an aircraft.

The examination record reveals that the drone operator concerned given that 2018 collaborate with drones. Both pilots count completely on the proper performance of the GPS receiver and had not exercised flying in ATTI setting because their obligatory training, wherein the GPS receiver is turned off and the drone only instantly maintains its current flight height. In such a case, the pilot should by hand ensure that the drone stays in position, to prevent the drone from being lugged by the wind.

Why both drones offered a GPS breakdown or signal disturbance notice has not come to be clear throughout the investigation. There may have been a GPS pity. This is a jammer that disrupts the satellite signal on which a drone depends for placing. The civil use of such jammers is restricted in most countries– including Great Britain.

Recommendation: method in ATTI mode

Among one of the most vital recommendations of the AAIB is that expert drone pilots must train frequently on the scenario that the GPS signal is shed as well as the drone needs to be controlled by hand, i.e. in ATTI mode. The return to house function no longer functions in that instance, due to the fact that this feature additionally calls for the appropriate performance of the GPS receiver in the drone. The recommendations has actually now been submitted to the UK air travel authority UK CAA.

The occurrence is rather similar to an event that occurred this springtime in the Netherlands. An Inspire 2 police drone was drifted. The drone was abandoned from the Zuiderpark in The Hague for maintaining the corona measures. Nevertheless, the drone became uncontrollable and was carried away by the wind. The aircraft came down on a pathway greater than a kilometer away, without touching any individual or anything. The investigation right into this occurrence is still ongoing.