As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE-N/A BLOCK TURNBACK, CREW HAD SMOKE IN COCKPIT. FOUND HYD LEAK IN LWR E & E, SUSPECT MAIN CARGO DOOR CONTROL VALVE HYD SUPPLY LINE. FOUND UPPER CARGO DOOR SOLENOID VALVE TO BE LEAKING ONTO PNUEMATIC DUCT. REMOVED AND REPLACED FWD UPPER CARGO DOOR SOLENOID SOV PER MM 52-36-00.