What was found
ON APPROACH, RECEIVED A RT MLG UNSAFE RED X W/ AURAL MLG & GEAR DISAGREE R CAS. RAN QRH & BLOWED DOWN MLG, GEAR INDICATED GREEN & LOCKED. LATER, RECEIVED RT MLG UNSAFE YELLOW X. RAN QRH AGAIN, AFTER RELEASING MLG UNLOCKS, 3 GEAR, GREEN. DECLARED AN EMERGENCY & LANDED, NO ISSUES. ON POWER UP, RT MLG RED UNSAFE ON MFD. CHKD GEAR PCBS & FOUND ALL 3 GEAR INDICATING DOWN & LOCKED. RT MLG INDICATING UP & LOCKED. CYCLED RT MLG UP LOCK SWITCH & RT MLG INDICATION RETURNED TO NORMAL IAW WDM 32-30-01. SAME PROBLEM LAST LEG. MANIPULTED RT MLG UPLOCK HARNESS & TAXIED ACFT. 3 MLG INDICATIONS REMAINED GREEN DOWN & LOCKED. MCC ELECTS TO FERRY ACFT TO ACCOMPLISH RT MLG UPLOCK SWITCH REPLACEMENT & GEAR SWINGS.