As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT DURING LANDING THE LEFT THRUST REVERSER DID NOT DEPLOY, NO TR LIGHTS ON LEFT SIDE. THE MAINTENANCE TEAM TROUBLESHOT AND FOUND LEFT HAND MAIN LANDING GEAR WEIGHT-ON-WHEELS LOCKING CLIP FOR ROLLER WAS MISSING. THE MISSING KEEPER CLIP WAS REPLACED WITH NEW. OPERATIONAL CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.