What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During a training flight the student performed a loss of engine simulation and upon retracting the flaps from 20 degrees to 10 degrees a loud pop occurred. The pilot noticed the right flap had buckled. The aircraft declared an emergence and landed without incident AT1H0 Creve Coeur Airport. Maintenance found the right flap outboard aft roller bearing failed during the movement of the flaps to the retracted position in flight. The outboard half of the flap became lodged in the outboard track while the inboard half of the track retracted normally. This applied a twisting motion on the flap assembly causing structural failure. The aircraft was repaired by replacement of four new flap tracks, new bearings, new bushings, new washers, new hardware. Installed original left flap and repaired right flap and incorporated privacy data omitted flap roller service kit STC# SA01074WI. Aircraft approved for return to service. SDR has been submitted.
As the FAA filed it
DURING A TRAINING FLIGHT THE STUDENT PERFORMED A LOSS OF ENGINE SIMULATION AND UPON RETRACTING THE FLAPS FROM 20 DEGREES TO 10 DEGREES A LOUD POP OCCURRED. THE PILOT NOTICED THE RIGHT FLAP HAD BUCKLED. THE AIRCRAFT DECLARED AN EMERGENCE AND LANDED WITHOUT INCIDENT AT1H0 CREVE COEUR AIRPORT. MAINTENANCE FOUND THE RIGHT FLAP OUTBOARD AFT ROLLER BEARING FAILED DURING THE MOVEMENT OF THE FLAPS TO THE RETRACTED POSITION IN FLIGHT. THE OUTBOARD HALF OF THE FLAP BECAME LODGED IN THE OUTBOARD TRACK WHILE THE INBOARD HALF OF THE TRACK RETRACTED NORMALLY. THIS APPLIED A TWISTING MOTION ON THE FLAP ASSEMBLY CAUSING STRUCTURAL FAILURE. THE AIRCRAFT WAS REPAIRED BY REPLACEMENT OF FOUR NEW FLAP TRACKS, NEW BEARINGS, NEW BUSHINGS, NEW WASHERS, NEW HARDWARE. INSTALLED ORIGINAL LEFT FLAP AND REPAIRED RIGHT FLAP AND INCORPORATED ^PRIVACY DATA OMITTED^ FLAP ROLLER SERVICE KIT STC# SA01074WI. AIRCRAFT APPROVED FOR RETURN TO SERVICE. SDR HAS BEEN SUBMITTED.