That can happen from something that at first appears somewhat innocuoussuch as a scraped wingtip during a previous flight. |
A series of impact marks and aircraft parts extended horizontally across the hillside between the wingtip pieces and the main wreckage. |
A scraped wingtip can appear to be minor but is deserving of a close inspection before the next flight. |
The wingtip, which may have freezer burn, can be removed and discarded when you carve the cooked turkey. |
I brought the aircraft to a stop, but not until after the wingtip and the prop contacted the ground. |
In fast spirals it might be necessary to apply a bit of brake on the outside as well to prevent the outer wingtip from collapsing. |