As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOD DAMAGE WAS FOUND ON LT ENGINE TURBO COMPRESSOR BLADES. THE SOURCE OF THE FOD DAMAGE WAS THE TAIL OFF FROM THE BAND CLAMP THAT HOLDS THE FILTER HOUSING ONTO THE TURBO. THE TAIL HAD AT SOME TIME SINCE LAST ANNUAL BROKEN OFF AND WAS SUCKED THROUGH THE GAP FOR THE ALTERNATE AIR SOURCE.