As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT APPROX 14,000 FT NR 1 ENGINE BEGAN TO SURGE/STALL WITH VIBRATION. AT 70% N1 SURGE/STALL WENT AWAY. AT IDLE; VIBRATION CEASED. AFTER ENGINE SHUTDOWN; SMALL FIRE STARTED FIRE BRIGADE USED WATER EXTINGUISHING AGENT 2 TIMES. NO OVERWEIGHT LANDING.<[01] REF. TTG8Q00XT53D FOR NR 1 ENGINE REMOVAL AND REPLACEMENT PER MT 771-00-00.;[02] RII: VERIFIED NR 1 ENGINE R/R PER TTG8Q00XT53D MT 771-00-00.