What was found
GREEN HYDRAULIC LOW LEVEL ECAM WARNING DURING FLT. DROPPED TO BELOW RED DOT. IMMEDIATELY ON ALERT WITH SOME FLUID INDICATION, TURNED OFF BOTH GREEN HYD PUMPS. EVENTUALLY FLUID DROPPED TO ALMOST ZERO. REMOVAL, INSTALLATION OF NR 2 ENGINE CASE DRAIN HYD TUBE AND RIB 12 CLAMP BLOCK IN RT PYLON CARRIED OUT IAW AMM 29-11-69-04-01. LEAK CHECKS CARRIED OUT OK. PARTS: TUBE MPN A2911503000400, MFG CLAMP BLOCK MPN A2901501900000, MFG BUSHING, MPN NSA 935812-11.