As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO CLT, CREW REPORTED THE LEFT MAIN LANDING GEAR DID NOT EXTEND. PULLED MANUAL GEAR EXTENSION. LEFT MAIN LANDING GEAR GREEN LIGHT CAME ON. LANDED NORMALLY. MAINTENANCE COULD NOT DUPLICATE FAULT ON NUMEROUS GEAR CYCLES. REPLACED LEFT MAIN LANDING GEAR DOWNLOCK ACTUATOR. ALSO, REPLACED LEFT MAIN LANDING GEAR UPLOCK ACTUATOR, TRANSFER VALVE AND MAIN GEAR MODULAR PACKAGE. ACCOMPLISHED NORMAL RETRACTION CHECK PER AMM 32-32-00 AND MANUAL EXTENSION CHECK PER AMM 32-34-00.