A little upset as my DIY built 5" crashed never to be seen again. I'm almost certain i experienced a dsync as it just dropped a corner and spiralled to the ground. No RSSI loss, failsafe or any error on OSD. I thought I'd be ok finding it but my goggles did not record so I had no way of seeing GPS coordinates either I've also since learnt you can store these onto your TX memory via telemetry (hindsight is a wonderful thing!) So putting my loss behind me , how can i diagnose a motor nearing wanting to do this and better still prevent it proactively?