As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 78472022 NR 1 ENGINE FOUND 1 STAGE 1 LPT NGV BURNED WITH MISSING MATERIAL. BLADE LOCATED APPROX AT 12:00 POSITION 1. ALSO FOUND 4TH STAGE 1 LPT NGV CRACKED APPROX 3/4 WAY THROUGH ALL ON DIFFERENT SEGMENTS APPROX 12:00 TO 3: 00 POSITION. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE PER T/C 78471000 AND 78471001.