As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) A REVIEW OF AIRCRAFT RECORDS SHOWED THE ENGINE WAS ASSEMBLED USING SHROUD SEGMENTS WITH A RETAINING RING. THE ENGINE WAS BORESCOPE INSPECTED IAW SB 1631. 2 SEGMENTS WERE FOUND TO BE AXIALLY DISPLACED WITH COMPRESSOR TURBINE BLADE TIP RUB ON ONE SEGMENT. HOT SECTION COMPONENTS WERE REMOVED TO EMBODY SB 1627 AND SB 1628.