As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO IAD DUE TO NR 1 ENGINE COMPRESSOR STALL. SURGE ON POWER REDUCTION AT 5500 MSL. EPR = 1.128. TWO ADDITIONAL SURGES AT EPR < 1.128. NOT GROUP-3 SURGE. TEST-21 NOT REQUIRED. IAD HPC BSI: OK. IAD REPLACED: 2.9 BLEED SOLENOID & RELAY, HP BLEED CONTROLLER, AND INTERMEDIATE CHECK VALVE. ENGINE CONTINUED TO SURGE ON GROUND RUNS DURING DECEL. ALL SURGES AT < 1.25 EPR. ENGINE REPLACED AT IAD ON 7/9/05. CURRENTLY EN ROUTE TO SFO FOR TEARDOWN.