As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR DID NOT COME DOWN WHEN SELECTED DOWN ON THE L/G LEVER. MANUAL EXTENSION WAS ACCOMPLISHED USING THE EMERGENCY HANDLE. REMOVED AND INSTALLED LANDING GEAR SELECTOR VALVE IAW JIC 32-31-51. NO LEAKS NOTED AND PERFORMED NORMAL EXTENSION AND RETRACTION FUNCTIONAL TEST AND FOUND OK IAW JIC 32-31-00.