What was found
FLIGHT CREW REPORTED THAT UPON LANDING THE LEFT THRUST REVERSER DID NOT DEPLOY, NO TR LIGHTS ON LEFT SIDE. THE MAINTENANCE TEAM FOUND THE LEFT MAIN LANDING GEAR WEIGHT ON WHEELS LOCKING CLIP FOR ROLLER MISSING. REPLACED THE MISSING KEEPER CLIP (P/N 15PA137) IN REFERENCE TO LEARJET 60XR AMM. COMPLIED WITH OPS CHECKS PF TR SYSTEM WITH NO DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.