As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROUTINE BOROSCOPE INSPECTION OF HSI COMPONENTS FOUND TWO SEGMENTS HAD DROPPED OUT OF POSITION. POWER SECTION REMOVED AND CT COMPONENTS INSPECTED. CT BLADES FOUND TO HAVE CONTACTED SEGMENT ENDS AND RETAINING RING P/N 3020159 FOUND OUT OF PLACE. SEGMENTS REPLACED WITH NEW P/N 3053094CL16 AND NEW RETAINING RING P/N 3020159 AND ALTERNATE SEGMENTS AND RING NOT AVAILABLE IN THE REQUIRED CLASS. ENGINE REASSEMBLED. SB1627 EMBODIED.