Not a design flaw...

So it'd be more clever for it to be carrying on its merry way, while some poor sods in a Hummer try to do better than 10mph cross-country through the bush to follow it? If it stays where it is, you can head over there so that it stops being a radio blackspot.

Or you can put a few ounces of black powder somewhere and blow the wings off, of course, just as a precaution Trouble is that you'd run out of planes pretty damn quickly. It'd also make you unpopular with whoever was underneath, if a drone with a half-dozen armed Hellfires drops on your campfire.