As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING STABLE FLIGHT, AIRPLANE EXPERIENCED FLUTTER. WHEN PUTTING LOADS ON ELEVATOR, FLUTTER WENT AWAY. RETURNED IN STEADY, STABLE FLIGHT. GREATER FLUTTER AT HIGHER SPEEDS, HAPPENED AT ALL ALTITUDES. RETURNED TO SLC. REMOVED AND REPLACED LT ELEVATOR FLUTTER DAMPERS WITH SERVICEABLE UNITS IAW MM 27-34-05.