What was found
ATB- FERRY FLIGHT, UNABLE TO RAISE LANDING GEAR AFTER TAKEOFF. LEVER WOULD ONLY RAISE TO "OFF" POSITION. COMPLIED WITH QRH. REMOVED CENTER TOP FWD BULKHEAD PANEL IAW AMM 25-52-16, T/S SYSTEM FOUND CONNECTOR D40462 LOOSE, TIGHTEND CONNECTOR IAW SWPM 20-73-01. REINSTALLED CENTER TOP FWD CARGO BULKHEAD PANEL IAW AMM 25-52-16, JACKED UP A/C IAW AMM 07-11-01, PERFORMED GEAR SWING IAW AMM 32-32-00 NO DEFECTS NOTED.