As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SQUAT SWITCH FOUND WITH ROLLER MISSING. DURING TROUBLESHOOTING FOR THRUST REVERSER (T) DEPLOYMENT SHORTLY AFTER TAKEOFF. AIRCRAFT RETURNED TO FIELD AND MADE AN UNEVENTFUL LANDING. REPLACED SQUAT SWITCH WITH NEW OF SAME PN. NO OTHER DEFECTS NOTED ON SWITCH. RECOMMEND THAT PRE-FLIGHT PROCEDURES INCLUDE CHECK FOR PRESENCE AND CONDITION OF SQUAT SWITCH ROLLERS. (K)