As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN-ROUTE THE PILOT REPORTED THAT THE HYD PRESS DROPPED TO 0 - 500 PSI FOR EXCESS OF 30 MINUTES. THE PILOT EXTENDED THE LG USING THE EMER PROCEDURES & LANDED WITHOUT INCIDENT. FOUND HYD LINE PN 27-81006-721 IN THE WING CTR SECTION CRACKED AT THE BEND RADIUS & LEAKING HYD FLUID. THE LINE WAS REPLACED & LEAK CHECKED NORMAL.