Drone flying is allowed alarmingly (in my opinion) close to fast jets in terrain-following training. In mid-Wales, we have the ‘Mach Loop’, used for this training in the valleys around Machynlleth, and I mean in the valleys, not above them. They are observable close up from various vantage points with car parks, and there is plenty footage online, just google ‘Mach Loop’
There is no NOTAM or FRZ connected with this, and the RAF publish a timetable of when they are flying there but are not unlikely to turn up anytime if it’s a good day for flying (we do the same). There were some near-misses with drones earlier this year which resulted in ‘polite notices’ being put up asking drone pilots not to fly when the fast jets are about.
Now, when I say fast jet, I mean military aircraft coming around the spur of a mountain perhaps a quarter of a mile away at around 600mph. You have a very short time to get out of the way, and since the aircraft are approaching only 30mph slower than the speed of sound, you don’t get much audible warning either; in fact, you’re probably recovering from the last one that went by a few seconds ago.
My take on this is that firstly, I don’t want my drone anywhere near this sort of activity, the turbulence in the wake is probably enough to bring it down. and secondly, I have no particular wish to be the cause of an F-15 shaped burn mark on the side of Cadair Idris…