What was found
AFTER TAKEOFF, THE LANDING GEAR WOULD NOT RETRACT. THE FLIGHT CREW FOLLOWED COM PROCEDURES, RETRACTED THE LANDING GEAR BY PUSHING THE LANDING HANDLE RELEASE BUTTON. FLIGHT RETURNED TO MEM AND LANDED WITHOUT INCIDENT. MAINTENANCE RIGGED THE ANTI-RETRACTION CABLE AND OPERATIONALLY CHECKED SYSTEM. SYSTEM CHECKED NORMAL.