As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A TRANSIT CHECK, DETECTED FOD DAMAGE TO THE LOW PRESSURE TURBINE 7TH STAGE OF THE LEFT ENGINE. MAINTENANCE PERFORMED AN INSPECTION AND FOUND A NICK WITH TWO CRACKS ON THE LOW PRESSURE TURBINE BLADE. FOUND OUT OF LIMITS IAW AMM DMC-B787-A-G72-00-00-10B-280C-A, PAGE 26. THE LEFT ENGINE WAS REPLACED AND OPS TESTED IAW AMM DMCB-787-A-G71-00-00-10B-520A-A AND DMCB787-A-G71-00-00-10B-720A-A, ALL CORRECT.