What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) At cruise cabin filled with smoke and engine began to vibrate. Pilot reduced throttle to idle engine smoothed out and smoke would clear. When power was reapplied smoke and engine vibration increased. No indication of engine problems prior to smoke in cabin. Pilot landed on beach by Anchor River.
As the FAA filed it
(-23) AT CRUISE CABIN FILLED WITH SMOKE AND ENGINE BEGAN TO VIBRATE. PILOT REDUCED THROTTLE TO IDLE ENGINE SMOOTHED OUT AND SMOKE WOULD CLEAR. WHEN POWER WAS REAPPLIED SMOKE AND ENGINE VIBRATION INCREASED. NO INDICATION OF ENGINE PROBLEMS PRIOR TO SMOKE IN CABIN. PILOT LANDED ON BEACH BY ANCHOR RIVER.