Evvvvvvvvvvvverybody prolly knows this already. In the central area of the island, flying on the deck is not advised. I've only experienced this on the Mindnao map, nowhere else.
Augering when flying above the terrain is the result. Thought it was a quirk the first few times, but today I was 50 feet above the deck ( running for my life

) and it happened again. The terrain isn't matched to the graphic representation in the central island.
Canyon fights come with a surprise..
Shame too, canyon fights are fun.