As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THE SQUAT SWITCH WAS INOPERATIVE. AFTER INVESTIGATION MAINTENANCE FOUND THAT SCREW AND NUT THAT FASTEN THE ROLLER TO THE SWITCH PLUNGER HAD FALLEN OFF AND THE ROLLER DEPARTED THE AIRPLANE RENDERING THE SQUAT SWITCH INOPERATIVE. SUGGEST A MORE POSITIVE METHOD OF ATTACHING THE ROLLER, PERHAPS A STEEL RIVET, TO PREVENT THIS FROM HAPPENING AGAIN.