What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On short final the pilot experienced uncommanded flap retraction, went from flaps full down to full up. Pilot increased approach speed from 90 to 115 to arrest rate of descent and landed. Pilot unable to bring the aircraft to a stop prior to the end of the runway. Aircraft continued off of runway across grassy area, across dirt road, and into swamp. Pilot estimated aircraft speed at 70 knots when departing end of runway. Investigation show light rubber marking on runway indicating braking action up to point where aircraft departed runway.
As the FAA filed it
ON SHORT FINAL THE PILOT EXPERIENCED UNCOMMANDED FLAP RETRACTION, WENT FROM FLAPS FULL DOWN TO FULL UP. PILOT INCREASED APPROACH SPEED FROM 90 TO 115 TO ARREST RATE OF DESCENT AND LANDED. PILOT UNABLE TO BRING THE AIRCRAFT TO A STOP PRIOR TO THE END OF THE RUNWAY. AIRCRAFT CONTINUED OFF OF RUNWAY ACROSS GRASSY AREA, ACROSS DIRT ROAD, AND INTO SWAMP. PILOT ESTIMATED AIRCRAFT SPEED AT 70 KNOTS WHEN DEPARTING END OF RUNWAY. INVESTIGATION SHOW LIGHT RUBBER MARKING ON RUNWAY INDICATING BRAKING ACTION UP TO POINT WHERE AIRCRAFT DEPARTED RUNWAY.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.