As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 598 - PHL-LAS - EMERGENCY LANDING - CREW REPORTED LOSS OF GREEN HYDRAULIC SYSTEM ON CLIMB AT ABOUT 7000'. CREW DECLARED AN EMERGENCY AND RETURNED TO PHL. MAINTENANCE REMOVED AND REPLACED THE DOOR BYPASS VALVE PER AMM 32-31-13. OPERATIONAL AND LEAK CHECKS WERE GOOD.