As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, GEAR SELECTED TO DOWN AND LT MAIN GEAR EXTENSION WAS DELAYED. AFTER ABOUT 25 SECONDS LT MAIN GEAR EXTENDED. MAINTENANCE TECHNICIAN FOUND LT LANDING GEAR UP LOCK ASSY WAS INTERMITTENT. REPLACED ASSY. NO RECOMMENDATION AT THIS TIME. (K)