As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROBLEM DESCRIPTION: ON CLIMBOUT BETWEEN 9000’ - 10000’ EXPERIENCED A COMPRESSOR STALL EPR INDICATED 1.9 ON NR 2 AND NR 3 AND 1.8 ON NR 1. AT 11000’ EXPERIENCED A SECOND COMPRESSOR STALL AND SUBSEQUENT ENGINE ROLLBACK ON NR 1 ENGINE. CORRECTIVE ACTION & OTHER PERTINENT INFORMATION: REMOVE AND REPLACED NR 1 ENGINE. ENGINE SENT TO SHOP FOR FURTHER INSPECTION.