As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF AND SELECTING LANDING GEAR TO THE UP POSITION. LT MAIN GEAR DID NOT COME UP. LT DOOR AMBER & LT DOOR RED WERE ILLUMINATED. RAN CHECK LIST & ALTERNATE GEAR EXTENSION CHECKLIST AND ALL THE GEAR CAME DOWN AND LOCKED. LANDING GEAR ALTERNATE EXTENSION DOOR DOESN'T APPEAR TO OPEN ALL THE WAY. DIVERTED FLIGHT AND FLEW GEAR DOWN. LANDING UNEVENTFUL. REPLACED THE SECONDARY MLG SELECTOR VALVE IAW AMM TASK 29-21-06-000-801, AND 29-21-06-400-801. OPS TESTS ARE GOOD. NO LEAKS NOTED. RETURNED TO SERVICE.