What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
PIC attempted to start weight shift control aircraft (trike) with the intention to fly. Engine failed to start so PIC exited the aircraft, primed the engine with starting fluid, and pulled the starter cord. The engine started with the throttle having been left at 50%. The aircraft (without PIC on-board) moved approximately 100 feet, became Airborne, and crashed into the top of one of the adjacent hangers.
As the FAA filed it
PIC ATTEMPTED TO START WEIGHT SHIFT CONTROL AIRCRAFT (TRIKE) WITH THE INTENTION TO FLY. ENGINE FAILED TO START SO PIC EXITED THE AIRCRAFT, PRIMED THE ENGINE WITH STARTING FLUID, AND PULLED THE STARTER CORD. THE ENGINE STARTED WITH THE THROTTLE HAVING BEEN LEFT AT 50%. THE AIRCRAFT (WITHOUT PIC ON-BOARD) MOVED APPROXIMATELY 100 FEET, BECAME AIRBORNE, AND CRASHED INTO THE TOP OF ONE OF THE ADJACENT HANGERS.