As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE HIGH VIBRATION. ENGINE SHUT DOWN, LOUD NOISE FROM ENGINE DURING SHUTDOWN. COULD NOT DUPLICATE NOISE. TWO DAYS LATER IN DEN MECHANICS REPORTED NR 1 ENGINE NOISY WITH HYDRAULIC PUMP ON AND STOPS WITH PUMP OFF. REPLACED PUMP AND RUN-UP WAS GOOD.