As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED DUE TO HYDRAULIC GREEN LOW LEVEL. REMOVED AND REPLACED BACKUP RING AND PACKING ON G SYS OUTLET ON #1 EN ENGINE OPERATED PUMP(EOP) IAW AMM 29-11-51-420-056-A. C/W LEAK AND OPS CHECK OF G SYS HYDRAULICS IAW AMM 29-11-51-00-710-001-A NO DEFECTS NOTED A/C OK OF SERVICE.