What was found
LANDING GEAR WOULD NOT RETRACT, GEAR HANDLE UP, 3 GREEN, NO RED. NO CIRCUIT BREAKER TRIP. CYCLED LANDING GEAR 15 TIMES WITH NO FAILURE NOTED. ALL EXTENSION, RETRACTION, AND GEAR INDICATORS OPS CHECKED GOOD. REMOVED LANDING GEAR CONTROL HANDLE AND INSPECTED THE SWITCH. CLEANED WITH COMPRESSED AIR AND CONTACT CLEANER, REINSTALLED AND CYCLED GEAR AN ADDITIONAL 15 TIMES WITH NO FAULTS NOTED. ALL WORK IAW MM 32-30-01, 32-01-00, AND 20-21-03.