What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pre-departure engine power runs indicated normal mag checks. During climb-out thru 250 feet the engine started losing power and RPM dropped from 2600 thru 2200. Pilot verified fuel boost pumps "on" with normal pressure @ 26 PSI, and max throttle position. The left wing tip struck a small tree branch during touchdown, resulting in the aircraft being spun and dropped into a stream. The pilot shutdown aircraft electrical power and fuel selection then evacuated with the passenger. Fuel samples taken during the post accident investigation after recovery, showed no contamination, the engine runs, indicated normal "idle" operation, but during "power" run, the RPM dropped within 12 seconds from 2600 to 2200 within 30 seconds, with fuel pressure reading 26 PSI. There is no accident damage to the engine or propeller.
As the FAA filed it
(-23) PRE-DEPARTURE ENGINE POWER RUNS INDICATED NORMAL MAG CHECKS. DURING CLIMB-OUT THRU 250 FEET THE ENGINE STARTED LOSING POWER AND RPM DROPPED FROM 2600 THRU 2200. PILOT VERIFIED FUEL BOOST PUMPS "ON" WITH NORMAL PRESSURE @ 26 PSI, AND MAX THROTTLE POSITION. THE LEFT WING TIP STRUCK A SMALL TREE BRANCH DURING TOUCHDOWN, RESULTING IN THE AIRCRAFT BEING SPUN AND DROPPED INTO A STREAM. THE PILOT SHUTDOWN AIRCRAFT ELECTRICAL POWER AND FUEL SELECTION THEN EVACUATED WITH THE PASSENGER. FUEL SAMPLES TAKEN DURING THE POST ACCIDENT INVESTIGATION AFTER RECOVERY, SHOWED NO CONTAMINATION, THE ENGINE RUNS, INDICATED NORMAL "IDLE" OPERATION, BUT DURING "POWER" RUN, THE RPM DROPPED WITHIN 12 SECONDS FROM 2600 TO 2200 WITHIN 30 SECONDS, WITH FUEL PRESSURE READING 26 PSI. THERE IS NO ACCIDENT DAMAGE TO THE ENGINE OR PROPELLER.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.