There is a story that a Loganair Twin Otter dragged its wheels through the heather at Abriachan on the inbound track to the old NDB at Inverness in the 80s. The NDB was located on the final approach of 06 in the town's Cameron Barracks with Abriachan hill some miles to the south west.
Interestingly from the report above, it would seem up to the early 80s few people gave a damn about wearing a seatbelt, and there are many instances of shoulder harnesses being discarded if you read the AAIB archive reports of the 1970s.