What was found
RT MAIN GEAR DOWN ON RETRACTION AFTER T/O. LIGHT WENT RED AND STAYED RED UNTIL GEAR HANDLE PLACED DOWN. RECYCLED, SAME THING. LANDED @ KOAK. PER CREW DEBRIEF, APPARENTLY THE RT MLG NEVER MOVED FROM THE DOWN AND LOCKED POSITION. SUSPECT RT MAIN DOWNLOCK CYCLINDER BYPASSING. JACKED A/C REF MM 07-11-00-2. ACCOMPLISHED LT AND RT MLG SWING REF MM 32-10-00-5. LT OPS AND INDICATIONS NORMAL; CONFIRMED RT NO UNLOCK/MOTION. DOOR SEQUENCING APPEARS NORMAL. REPLACED RT MLG DOWNLOCK CYLINDER REF MM 32-33-02-2. ACCOMPLISHED MULTIPLE MLG GEAR SWINGS, OPS AND INDICATIONS NORMAL REF MM 32-10-00-5.