As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD - FLT 1654 - DURING APPROACH TO IAD WHEN LANDING GEAR EXTENDED, RT MLG DID NOT EXTEND. RECYCLED LANDING GEAR WITH SAME RESULTS. MANUALLY EXTENDED LANDING GEAR AND AIRCRAFT LANDED IAD WITHOUT INCIDENT. REPLACED RT MLG SEQUENCE DOOR LOCK ACTUATOR. ACCOMPLISHED GEAR DOWN MAINTENANCE FERRY IAD/DCA. ACCOMPLISHED LANDING GEAR RETRACTION CHECK WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. (X)