As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE COMPRESSER STALL WITH VIBRATION AT CRUISE ACCOMPLISHED ENG LIMIT SURGE STALL. REF FIM TASK 71-05 TASK 805. C/W BORESCOPE PER AMM 71-00-00-210-801. INSPECTED BLEED AIR CHECK VALVE. PERFORMED EEC BITE; ACTUATORS TEST AND POWER ASSURANCE CHECK. NO FAULTS NOTED AT THIS TIME. POWER PLANT ENGINEERING WAS CONTACTED REF TSR 20200013154.