What was found
(CAN) ON GEAR EXTENSION THE LT MAIN GEAR WAS NOT INDICATING LOCKED DOWN. FLIGHT-CREW CYCLED THE GEAR 3 TIMES WITH NO CHANGE. FLIGHT-CREW DECLARED A PAN PAN WITH ATC, LANDED SAFELY WITH NO FURTHER ISSUES. FOUND LT M/G UPLOCK SENSOR 09GA CONNECTOR PLUG DISCONNECTED. CLEANED AND RECONNECTED. NO FAULTS. FUNCTIONAL TEST OF NORMAL EXTENSION AND RETRACTION OF LANDING GEAR ACCOMPLISHED IAW AMM 32-31-00-720-002-A. NO FAULTS. DOWNLOCK PIN AND COLLARS RETURNED TO FLIGHT DECK STOWAGE.