What was found
STALL DISPLAYED ON UPPER ECAM SCREEN DURING STEADY STATE CLIMB OR CRUISE. ENGINE NOT SHUTDOWN - ENG 1. ENG 1 MOMENTARY STALL AT CRUISE FL330. SELF RECOVERED NORMAL THRUST. REF LOG PAGE 3743159. METAL FOUND IN ENG 1, 7TH STAGE BLEED VALVE. PROCEEDING TO CHANGE #1 ENG. LP 3743159- WHILE ACCOMPLISHING TSM 75-30-00-810-827-B13 FOR ENG 1 STALL, IPCV ( CHECK VALVE) CONDITION IS GOOD. VSV MECHANISM CONDITION IS GOOD AND MOVEMENT IS GOOD. UPON FUNCTIONAL CHECK OF 7 STAGE BLEED VALVES, FOUND METAL IN 7TH STAGE BLEED VALVE. PROCEEDING WITH ENG CHANGE. REMOVED ENG SN#V11071 AND INSTALLED ENG SN#V10487. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1142925 SN OFF 1071 ENGINE, V2500-A OFF 31-7200-9-0001 1071 ON 31-7200-9-0001 0487 INSPECTED REMOVAL # 1 ENGINE SN V11071 AND INSTALLATION SN V10487 PER GMM 09-25 05.