As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TO MHT, THE HYDRAULIC PRESSURE WENT TO ZERO ON THE NR 1 SYSTEM WITH A COMPLETE LOSS OF CONTENTS. INSTALLED INTERIM FLEX LINE ON NR 1 PRESSURE MANIFOLD TO ANTI-SKID CONTROL IAW DHC MM. PERFORMED PROCEDURES OUTLINED IN DHC MAINTENANCE MANUAL 05-30. SYSTEM CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)