As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE FL 290 GREEN SYSTEM LOW PRESSURE CAUTION WITH HYDRAULIC FLUID AT RED DOT. COMPLIED WITH ECAM AND QRH PROCEDURE. EMERGENCY DECLARED. PERFORMED FREE FALL RESORATION. CHECKS GOOD. FOUND HYDRAULIC LEAKING UNDER LEFT ENGINE. FOUND LEAKING O-RINGS AT HYDRALIC GREEN MANIFOLD IN PYLON. REPLACED ALL MANIFOLD O RINGS PER M/M. . LEAK AND SYSTEMS CHECKS NEEDED AT THIS TIME.