As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DECLARED EMERGENCY INBOUND DUE TO AN ENGINE VIBRATION. VIBRATION FELT LEFT ENGINE MOMENTARY LOSS OF N1 WITH QUICK RECOVERY. THE NR 1 ENGINE COMPRESSOR STALLED WITH VIBRATION AT 7000 MSL, THE ENGINE WAS BROUGHT TO IDLE POWER FOR REMAINDER OF FLIGHT. THE AIRCRAFT WAS GROUNDED. REPLACED THE NR 1 ENGINE IAW JC 26L40071001.