As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 5652 -ATB- CREW PERFORMED AIR TURN BACK DUE TO RIGHT ENGINE SURGE IN FLIGHT. CORRECTIVE ACTION: FOUND 2.5 BLEED RING DOES NOT GO FULL OPEN. R/R 14 STAGE BLEED VALVE AND REMOVED AND INSTALLED 14TH STAGE CONVERTER VALVE IAW B757 AMM 75-32. PERFORMED ENGINE RUN - ALL OPS NML.