As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE A STUDENT PILOT WAS PRACTICING TOUCH AND GOES, THE FLAPS FAILED TO GO BEYOND 20 DEGREES. THE STUDENT CYCLED THE FLAP LEVER SEVERAL TIMES AND THE FLAPS STAYED AT 20 DEGREES. THE STUDENT HIT THE RUNWAY NOSE FIRST AFTER FAILING TO FLARE THE AIRCRAFT OVER THE RUNWAY AND THEN DEPARTED THE RUNWAY. MAINTENANCE LATER FOUND THE FLAP MOTOR HAD FAILED. SUBMITTER STATED THE MOTOR GAVE NO INDICATIONS AT ALL OF IMPENDING FAILURE.