What was found
AFTER TAKEOFF, GEAR WARNING HORN SOUNDED AND 3 GEAR RED LIGHTS REMAINED ILLUMINATED WITH GEAR HANDLE IN THE UP POSITION. QRH CALLED FOR A RECYCLE OF THE LANDING GEAR. RECYCLE ATTEMPTED WITH THE SAME RESULT, GEAR HORN AND 3 RED GEAR LIGHTS, DOOR LIGHT AND TAIL SKID LIGHT WERE NORMAL. WITH GEAR HANDLE DOWN, WE HAD 3 GOOD DOWN & LOCKED INDICATIONS. LANDED UNEVENTFULLY AFTER A 6000 LBS FUEL DUMP. JACKED ACFT AND SWUNG GEAR TO DUPLICATE DISCREPANCY, R & R LANDING GEAR ACCY MODULE, AMM 32-09-121-4, OPS CHECK GOOD, OK FOR SERVICE. (FINAL CLOSED)