What was found
LHR - CREW REPORTED LOSS OF LEFT HYDRAULIC PRESSURE. FLIGHT LANDED LHR WITHOUT INCIDENT. TIGHTENED UNION ON NUMBER 3 SPOILER PCU ON LEFT WING THAT WAS LOOSE. SYSTEM GROUND CHECK NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LHR - CREW REPORTED LOSS OF LEFT HYDRAULIC PRESSURE. FLIGHT LANDED LHR WITHOUT INCIDENT. TIGHTENED UNION ON NUMBER 3 SPOILER PCU ON LEFT WING THAT WAS LOOSE. SYSTEM GROUND CHECK NORMAL OPERATION.