As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - RETURN TO SFO DUE TO NR 1 ENGINE COMPRESSOR STALL AT CLIMB POWER AT ABOUT 4,000 FEET. REDUCED POWER AND ENGINE RAN NORMAL EXCEPT FOR HIGHER EGT THAN RIGHT ENGINE FOR GIVEN EPR SETTING. REMOVED AND REPLACED NR 1 ENGINE PER QQ TASK CARD 0099. OPS AND LEAK CHECK GOOD. PERFORMED HI-POWER TRIM PER MM 71-00-00. ALL PARAMETERS MET. (X)