As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRUISE AT FL330, EXPERIENCED A YAW TYPE JOLT WITH POPPING SOUNDS FROM CAPTS SIDE OF AIRPLANE. ENG NR 1 VIBS WENT FROM 1.0 TO 1.8 FLIGHT ATTENDANT THEN REPORTED BASEBALL SIZE SPARKS COMING OUT OF ENGINE NR 1 AND THAT THEY WERE GETTING WORSE ENG NR 1 SHUT DOWN IN FLIGHT AT 33,000 FT. FOUND HP COMPRESSOR DAMAGE, WILL REPLACE ENGINE.