As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUBSTANTIAL AIRFRAME VIBRATION WHEN ENGINES SPOOL UP FROM IDLE IN FLIGHT. NO VIBRATION INDICATION ON ENGINE PAGE.(<P>PERFORMED AIRFRAME VIBRATION CONDITIONAL INSPECTION I.A.W A.M.M 05-51-38. NO ABNORMALITIES OR DEFECTS NOTED<BR /></P>)