What was found
FOUND LH ENG BLADES (FAN) #10 & 11 LEADING EDGE TIP CURL.(<P>LP 1223619 - M5: REF LP 1223618 - M3. REMOVED FAN BLADES #9, 10, 11, 4, 5, AND 6 IAW AMM 72-31-02. RE-INSTALLED BLADES #4, 6, AND 9 ON L/H ENG IAW AMM 72-31-02.</P><P>LP 1223618 - M3: REMOVED AND REPLACED LH ENG BLADE #10 IAW AMM 72-31-02, OPS CHECK GOOD. CLEAR TO RETURN TO SERVICE. OFF PART (PN: 1338M51P06, SN: MTJ47813)</P><P>LP 1223621 - M10: REMOVED AND REPLACED LH ENG BLADE #11 IAW AMM 72-31-02, OPS CHECK GOOD. CLEAR TO RETURN TO SERVICE. </P><P>LP 1223621 - M12: DUE TO FAN BLADE REPLACEMENT, L/H ENG REQUIRES VIBE SURVEY. C/W TEST NO. 6 VIBRATION SURVEY IAW 71-00-00, TEST SUCCESSFUL. </P>)