As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE NLG & MLG FAILED TO EXTEND NORMALLY. FLIGHT CREW USED ALTERNATE GEAR EXTENSION PROCEDURE TO EXTEND LANDING GEAR. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND SAFETY VALVE 49GA INOPERATIVE. R & R SAFETY VALVE 49GA. CYCLED GEAR. OPS CHECK OK.