What was found
FLT ATTN IN AFT OF ACFT REPORTED LOUD EXCESSIVE NOISE FROM ENGINES. PERFORMED BORESCOPE ON NR 1 ENGINE 6TH AND 7TH STAGE COMPRESSOR DUE TO N1 FAN BLADE DAMAGE FOUND. DAMAGE TO 7TH STAGE OUT OF M/M LIMITS. REPLACED ENGINE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT ATTN IN AFT OF ACFT REPORTED LOUD EXCESSIVE NOISE FROM ENGINES. PERFORMED BORESCOPE ON NR 1 ENGINE 6TH AND 7TH STAGE COMPRESSOR DUE TO N1 FAN BLADE DAMAGE FOUND. DAMAGE TO 7TH STAGE OUT OF M/M LIMITS. REPLACED ENGINE.