As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, RT MLG AND NOSE GEAR INDICATION SHOWED UNSAFE. ON SECOND ATTEMPT GEARS CAME DOWN NORMALLY. ON GEAR OPERATIONAL CHECK RT MLG FAILED TO EXTEND, NOSE GEAR OPERATION NORMAL. REMOVED AND REPLACED RT MLG DOOR SEQUENCE VALVE. SYSTEM OPERATIONAL CHECKS GOOD MM. (K)