What was found
FLT#20, LHR-JFK. (ETOPS) 'FOUND (2) ENG #2 FAN BLADES CRACKED; REFER TO LOG PAGES 4185631, ITEM 1 (REMOVED AND REPLACED FAN BLADE #14 ON ENG #2 PER AMM 72-11-03. S/N: LBDUB15815. OPS CHECKS TRANSFERRED TO L/P 4185632-1) AND ITEM 2 (REMOVED AND REPLACED FAN BLADE #15 ON ENG #2 PER AMM 72-11-03. S/N: JB1AEA1952. TRANSFERRED TO NEW POSITION #18 AFTER PWBAL BLADE SEQUENCE. OPS CHECK TRANSFERRED TO L/P 4185632-1) AND 4185632 (ACCOMPLISHED FUNCTIONAL TEST ( FAN TRIM BALANCE) PER AMM 71-00-00-710-807-A. ALL VALUES WITHIN LIMITS. NO FAN TRIM BALANCE NECESSARY. A/C OK FOR SVC) FOR REMOVAL AND REPLACEMENT OF FAN BLADE #14 + #15 ON ENG#2 + FUNCTIONAL TEST (FAN TRIM BALANCE) NO DEFECTS NOTED. OK FOR CONT SVC;