As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALTERNATE GEAR EXTENSION DOOR IS HARD TO OPEN AND CLOSE BECAUSE OF STICKY VALVE. R & R THE SECONDARY MLG SELECTOR VALVE IAW AMM TASK 29-21-06-000-801 AND 29-21-06-400-801, DOOR OPERATES NORMAL AND NO DEFECTS, NO LEAKS. RETURNED TO SERVICE.