What was found
MLG: AT FL400, AMBER GEAR DISAGREE R CAS MESSAGE ILLUMINATED. AIRCRAFT AUTOMATICALLY SLOWED TO 210KTS. CAS EXTINGUISHED AFTER 20 MINUTES. WE REMAINED AT 210KTS REMAINDER OF FLIGHT. NORMAL LANDING WAS ACCOMPLISHED. REMOVED !NOP RH MAIN GEAR UPLOCK SWITCH PN: 6948101-3, NSN AND REPLACED WITH NEW CUSTOMER SUPPLIED MAIN GEAR UPLOCK SWITCH PN: 6948101-3, NSN. OPERATIONAL AND INDICATION CHECKS ARE ALL NORMAL. ALL MX IN REFERENCE TO MM 32-00-00 AND MM 32-32-25.