What was found
PDIS 751 29-30 2383 26MAY21 MEM OPEN U PASSING FL330 ON DESCENT TO MEM GREEN SYS RESERVOIR LOW LEVEL ILLUMINATED. GREEN SYSTEM SHOWED AT THE RED DOT. COMPLIED WITH ALL ECAM AND QRH PROCEDURES INCLUDING GRAVITY GEAR EXTENSION. FACT 26MAY21 20:25 MEM VERIFIED WITH DFDR THAT THIS WAS AN INDICATION ISSUE AND NOT ACTUAL LOSS OF QUANTITY. GREEN SYS HYD PRESS WAS MAINTAINED THROUGH FL16000 WHEN FLIGHT CREW TURNED OFF ENG PUMPS PER RED TAB PRECEDURE PRIOR TO AVIONICS REPLACING CANNON PLUG, GREEN SYS HYD QTY ON RESERVOIR WAS READING LOW AND COCKPIT INDICATION WAS AT TOP OF GREEN BAND (HIGH). AFTER RNR OF XMITTER CANNON PLUG AND CLEANING XMITTER RECEPTICAL, HYD QTY READS EAQUAL FROM RES TO COCKPIT. SERVICED GREEN SYS HYD REF A300-600AMM 12-12-29-00 AND PERFORMED GREEN SYSTEM RESERVOIR CHECK FOR CORRECT AIR PRESSURE AND FLUID LEVELS REF A300-600 AMM 29-10-00-06. ALL QTY AND PRESS INDICATIONS NORMAL REMOVED AND REPLACED GREEN HYDRAULIC SYS RESERVOIR TRANSMITTER REF A300 AMM 29-31-11-04 OPS CHECK LEAK CHECK GOOD