First test flight of my S550 build. It all went a bit wrong when the low battery alarm engaged...
It went into return to home mode, as per the APM failsafe, but instead of a gentle flight back to its takeoff point it went clattering into the ground. Ouch. Something definitely not right there! Flew pretty well aside from that!
Frame is completely totalled, so it won't be flying again! Luckily it looks like it was only the frame that was damaged - the motors, ESCs and other electronics look fine.