What was found
OAK - FLT NR 433, ON DEPARTURE UNABLE TO RAISE LANDING GEAR AFTER TAKEOFF. ACCOMPLISHED APPROPRIATE CHECKLIST AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED A LANDING GEAR EXTENSION TEST, A POSITION AND WARNING INDICATING SYSTEM TEST AND A GEAR CONTROL LEVER AND ANTI-RETRACTION LATCH CHECK PER ASA WORK CARDS AND MANUFACTURERS MAINTENANCE MANUAL. ALSO, RESERVICED THE NOSE STRUT AND CHECKED THE GROUND SENSING SWITCHES ACTUATION. UNABLE TO DUPLICATE ANDY DISCREPANCY. (W)