On my way home from flying with my DJI SPARK I tried to fly in tripod mode in the middle of the street and then below the barrier. ?
But it doesn't come to that maneuver, because the drone drifts to the right towards my dog and at about 0:20 sec the SPARK accelerates independently and wants to fly away forwards. (I think you can see that well)
I'm flying close to the ground anyway, on the one hand because I have little power left in the battery on the way home and I am prepared for a sudden landing
(but why not use the rest of the energy for a little skill exercise? ) and on the other hand because I want to try flying under the barrier.
Fortunately, it was easy to force the drone to land immediately, but even from this low altitude there were unwanted course deviations.
The explanation is simple, but invisible in the dark: a power line runs along the right side of the street, a very small one, just to supply a handful of houses further down the road with electricity. You can hardly see the line between the trees in daylight and as a resident you don't even think about it, although you actually know it.
Every drone manual warns of >magnetic fields< and power lines. Even so, there have been a lot of reports of "mysterious fly-aways" where the drones or the software or "some secret power" caused the drone to spiral out of control ...
If the small cable on my street irritates my SPARK so much and makes it uncontrollable, what can happen where there are much stronger forces? So, be careful with all types of power lines! In Germany people find power lines ugly and where it can be financed, they dig them into the ground - even extremely powerful crossscountry lines! The disturbing forces are then only a little attenuated, but not gone - and the cables are invisible in the ground. However, they are shown on good topographic maps.