The data is really the only way you are going to find out what caused these accidents. Then you’ll know if the fault is with the drone or your operation of it.
No. Although the stickers have been supplied, DJI have stopped re certifying drones sold as C0 to C1.
It was never a case of just adding the sticker(s). You had to add the sticker(s), supply photographs to DJI, they would then assign the drone to...
Here you go. UAS at Historic Environment Scotland Properties
Don’t forget you’ll need an operator id for your drones and a flyer id for anyone who flies them from the CAA.
The ratings would be even worse than just hovering in the open air as the test was done in a closed room and the drone would set up some constant air flows that would further reduce the lift generated causing more work to be done by the drone.