As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FOLLOWING A SIMULATED FORCED APPROACH, THE INSTRUCTOR AND STUDENT HEARD A LOUD BANG AS THE FLAPS WERE RETRACTING. THE FLAPS CONTINUED TO RETRACT TO THE FULL UP POSITION AND THE FLIGHT CONTINUED BACK TO BASE AND LANDED UNEVENTFULLY.MAINTENANCE PERSONNEL FOUND THAT THE LEFT INBOARD FLAP TRACK (RIB ASSY) HAS CRACKED.