As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED DUE TO NR 1 ENGINE COMPRESSOR STALL. COMPRESSOR STALL CAUSED BY HIGH PRESSURE COMPRESSOR (HPC) 6TH STAGE (C6) BLADE DAMAGE WHICH WAS IN TURN CAUSED BY HPC C6 RUBSTRIP COATING DISBONDING. SERVICE BULLETIN 72-0369 IS IN PLACE TO UPGRADE COATING TO AVOID DISBOND. THIS SERVICE BULLETIN IS ACTIVELY ACCOMPLISHED AT ENGINE SHOP VISIT.