What was found
LT MLG BECAME STUCK IN THE UPLOCK POSITION WHEN SELECTED GEAR DOWN AT 12500 FT MSG FOLLOWING EMERGENCY/ABNORMAL CHECKLIST, Z3 DID NOT CORRECT UNSAFE LIGHT OR LT MAIN GEAR INDICATION OFF. ABOUT 7 MINS LATER UPLOCK LET LOOSE AND GEAR EXTENDED, OK. ACCOMPLISHED MLG SYS ADJ/TEST IAW MM CH 32-01-00 REV 22. TASK 32-01-00-720. NO DEFECTS NOTED IN THE OPERATION OF LT DOWNLOCK SWITCH OPS CHECKED OK. PANEL REMOVED LT MLG ACTUATOR IAW MM 32-30-04 REV 26. ROUTED TO HYD SHOP TO CHANGE SWITCH. REMOVED SWITCH CORE TO BE GIVEN WITH REO TAG. INSTALLED MLG ACTUATOR IAW MM 32-30-04. LEAK/OPS CHECK GOOD. ADDITIONALLY ACCOMPLISHED LANDING GEAR FT IAW MM CH 32-01-00. OPS CHECK GOOD.