What was found
RT MLG WOULD NOT EXTEND WHEN GEAR HANDLE WAS LOWERED MANUAL GEAR EXTENSION WAS EXECUTED AND THE BOTTLE PRESSURE WAS USED TO SECURE THE GEAR. TROUBLESHOT AND FOUND SOME CORROSION ON THE UPLOCK ACTUATOR SPRING AND GLIDER. REMOVED RT MLG UPLOCK ACTUATOR, SPRING, AND HARDWARE. INSTALLED A NEW RT MAIN LANDING GEAR UPLOCK ACTUATOR, A NEW SPRING, AND NEW HARDWARE. FUNCTION CHECKED AND LEAK CHECK RT MAIN LANDING GEAR UPLOCK ACTUATOR. SYSTEM CHECK'S OUT OK. IAW MM 32-01-00 WDM 32-30-01 AND 32-60-01.