What was found
(CAN) ON MAR 23,2002 DURING LDG PHASE IN WILMINGTON, OHIO (KILN) PILOT INITIATED DEPLOYMENT OF LDG GEAR. COCKPIT INDICATOR SHOWED 3 RED LIGHTS IDENTIFYING FWD GEAR DOOR LATCH UNLOCKED & NO GREEN LIGHTS TO CONFIRM THAT GEAR DOORS WERE FULLY OPENED & GEAR DOWN & LOCKED. THE CAUSE OF THE MALFUNCTION WAS IDENTIFIED BY OUR CONTRACTEDAMO AS MOISTURE WITHIN THE GEAR DOOR MICRO-SWITCHES, WHICH PREVENTED THE SELECTOR SOLENOID VALVE TO OPEN AND CONSEQUENTLY THE LANDING GEAR DID NOT RELEASE. ALL SWITCHES WERE INSPECTED AND RE-SEALED.