As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC PRESSURE LINE FROM RESERVOIR TO HAND PUMP CHECK VALVE WAS FOUND BROKEN AT CHECK VALVE FLARE NUT. THE BREAK AT THIS POINT CAUSED THE RESERVOIR TO EMPTY AND THE HAND PUMP TO BE INOPERATIVE. THE LINE WAS PROPERLY INSTALLED, AND HAD NO SIGNS OF STRESS OR DAMAGE.