As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)PILOT HAD TO ACTIVATE THE EMERGENCY EXTENSION SINCE THE NORMAL GEAR DOWN SELECTION WAS INOPERATIVE. INVESTIGATION REVEALED THAT THE HYDRAULIC LINE HAD FAILED. THE LOCATION OF THE FAILED LINE IS UNDER THE RIGHT CORNER OF THE WINDSHIELD AND CORROSION FOLLOWED BY FAILURE ON THE LINE WAS CAUSED BY TRAPPED MOISTURE IN THE INSULATION. SUBMITTER STATES THAT THIS PROBLEM HAS BEEN SEEN BEFORE.