As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB-OUT FROM JFK PASSING 8000 FT RT ENG STARTED SURGING. STATUS MSG R ENG CONTROL. DECLARED EMERGENCY AND RETURNED TO JFK. ENG WAS NOT S/D. OVERWEIGHT LANDING. R PIMU FAULTS T2.5 SNSR. (CIT) REPLACED SAME. REMOVED AND REPLACED N1 PROBE. BOROSCOPE HPC NTF, ENG R/U OK.