As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED A LOSS OF GREEN HYDRAULIC SYSTEM PRESSURE AND DIVERTED TO ORD WHERE THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE RIGHT SPOILER SERVO VALVE GASKET SEAL PER AMM 27-64-51.