What was found
DURING NORMAL GEAR EXTENSION THE RT MLG DID NOT INDICATE LOCKED. AFTER CYCLING THE GEAR & FISH TAILING IT INDICATED LOCKED & A NORMAL LANDING OCCURED. THE ACTUATOR WAS REMOVED AND DISASSEMBLED AND FOUND THAT ONE OF FOUR PAWLS THAT INTERALLY LOCK THE COLLAR WAS STICKING & NOT COMPLETING THE LOCK. THE ACTUATOR WAS OVERHAULED & BENCH CKD OK. IT WAS REINSTALLED AND OPS CKD OK. THIS IS A RECURRING PROBLEM THROUGHOUT THE FLEET. IT IS RECOMMENDED THAT 500 HR. I.R.A.N BE MADE A SERVICE ITEM FOR CONTINUED AIRWORTHINESS. IT IS BELIEVED ALSO, TO BE COLD RELATED.