As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRFRAME VIBRATION ABOVE 250 KTS. ENGINE INDICATIONS NORMAL NO ISSUES WITH FLIGHT CONTROLS. FOUND SEALANT MISSING FROM BELLY FAIRING FORWARD OF MLG IN THE CENTER OF THE ACFT APPLIED SEALANT TO BELLY FAIRING PANEL 193AB L/E REF AMM 51-23-00.