As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE 1 HIGH VIBRATION 4.0 AMBER RANGE REDUCED THRUST TO 75 PERCENT N1 AND ISSUE PERSISTED EMERGENCY DECLARED. -C/A-INSPECTED BLADES AND PERFORMED RUN UP WITH CREW DEFERRED PER AMM REF ETN-EJ-79-009 TDMI AUTHORIZATION NUMBER 002T7222. PERFORM VIBRATION ANALYSIS WITHIN 25 FLT CYCLES