What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The day following a training flight, it was noticed that the left flap had wrinkled outboard and inboard of the attach point of the push rod. The wrinkling was limited to the left flap and was consistent with a force being applied uniformly to the front (bottom) of the flap. The instructor noted that the wind was gusty on approach but claims to have not exceeded any limitation of the aircraft during the flight. Investigation on scene of the flap and associated controls revealed no obvious indication of design flaw or insufficient maintenance.
As the FAA filed it
THE DAY FOLLOWING A TRAINING FLIGHT, IT WAS NOTICED THAT THE LEFT FLAP HAD WRINKLED OUTBOARD AND INBOARD OF THE ATTACH POINT OF THE PUSH ROD. THE WRINKLING WAS LIMITED TO THE LEFT FLAP AND WAS CONSISTENT WITH A FORCE BEING APPLIED UNIFORMLY TO THE FRONT (BOTTOM) OF THE FLAP. THE INSTRUCTOR NOTED THAT THE WIND WAS GUSTY ON APPROACH BUT CLAIMS TO HAVE NOT EXCEEDED ANY LIMITATION OF THE AIRCRAFT DURING THE FLIGHT. INVESTIGATION ON SCENE OF THE FLAP AND ASSOCIATED CONTROLS REVEALED NO OBVIOUS INDICATION OF DESIGN FLAW OR INSUFFICIENT MAINTENANCE.