I was playing about with the Self Level mix mode of the KK2 1.6++ firmware, but due to user error, managed to get it to self-level upside down, 60 metres above the ground, which it then proceeded to slam into. Oops.
The tricopter held up surprisingly well considering the height and speed of impact, and the zip ties did their thing and let the motors break away cleanly, but there is still some damage to see to (cracked body, cracked receiver antenna, broken ESC cable). Time to get the tools out again.
The camera did NOT enjoy the crash – I had to recover, then repair the video file from the SD card, and sadly this is all the footage that there is.