As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A LOST HYDRAULIC FLUID SYSTEM - DURING FLIGHT. SERVICED NR 2 HYDRAULIC SYSTEM IAW AMM 12-13-02-3. CYCLED ALL FLT CONTROLS SEVERAL TIMES WITH ELECTRIC HYD PUMPS ON. NO LEAKS FOUND. C/O NR 2 ENG MOTORING AND VERIFIED NO LEAKS ON EDP'S. ALL THE TIME NO HYD QTY IND DROP. C/O MOTORING AND CYCLED T/R & FLT CONTROLS. NO LEAKS FOUND. FOUND AT AFT FIREWALL B-NUT.