What was found
AFTER GEAR RETRACTION GOT GREEN PUMP NR 2 LOW PRESSURE WARNING ON ECAM. COMPLIED WITH ECAM ELECTED TO RTN TO MHT AS AIRCRAFT HAD TOTAL GREEN SYSTEM FAILURE PREVIOUS FLIGHT AND GREEN SYSTEM HAD BEEN OPEN AND MAINTENANCE PERFORMED. QUANTITY APPEARED TO BE DECREASING BUT COULD NOT CONFIRM DUE TO FLUCUTIONS DUE TO GEAR RETRACTION AND EXTENSION. T/S GREEN PUMP NR 2 LOW PRESSURE LIGHT. REMOVED AND REPLACED NR 2 ENG GREEN PUMP CASE DRAIN FILTER, NO CONTAMINATION FOUND PER 29-11-36-3-01. AS PER MM 29-11-32-4-01 FOUND AIR WHEN BLEEDING PUMP. RAN BOTH ENGINES, RAN ALL PUMPS, NO LO PRESS LIGHTS OR RVSR LIGHTS ON AT ANYTIME.