What was found
DURING CRUISE FLIGHT AT FL 330 .80 MACH ECAM ALERTED-INDICATING LOSS OF BLUE HYD SYSTEM (HYD RSVR LO LEVEL) - ECAM SYSTEM PAGE SHOWED BLUE HYD SYSTEM RESEVIOR WAS LOW. ECAM PROCEDURE FOR HYD RSVR LO LEVEL ACCOMPLISHED. REMAINING HYD SYSTEMS NORMAL. FOUND BLUE HYD SYS PSI TRANS CRACKED. REMOVED AND REPLACED BLUE HYD SYS PSI TRANS. OPS AND LK CK OK. REF A300MM 29-32-13-4. ENT BY: 446285 RPT BY: 446285 R/I 22JUL04 11:26 MEM R R/I FROM FACT PREMATURE REMOVAL/INSTALLATION OFF MFG 64250-005-2, POS P1, SRL 12051, TAG 611495 ON MFG 64250-005-2 SRL 11564, TAG 609018.