As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE INSPECTION, HYDRAULIC FLUID WAS FOUND IN THE WHEEL WELLS. THE LEAK WAS TRACED TO A CRACK IN A RIGHT HAND BRAKE LINE, PN 1159H20014. THE CRACK STARTED IN A SLIGHT GROOVE THAT MAY HAVE BEEN A MANUFACTURER'S TOOLING MARK THAT WAS INFLICTED WHEN THE TUBING WAS MANUFACTURED OR BENT TO FORM THE ASSEMBLY. THE LINE HAS BEEN INSTALLED FOR 30 YEARS.