As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A-HYD SYSTEM FLUID LOSS / ISOLATED TO -A- PUMP NR 2. AFTER SHUTDOWN, THE -A- SYSTEM QTU. READ 2.5 GALLONS AND THE FLUID SHUTOFF SWITCHES WERE NOT TURNED OFF. OPENED COUPLING AND MOTORED ENGINE. FOUND PRESSURE LINE FROM THE PUMP TO THE FIREWALL RUPTURED.