As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4569, ON APPROACH AT 310KTS AND FL260 HAD SEVERE FLUTTER OR VIBRATION THROUGH OUT AIRCRAFT. SLOWED TO 270 THEN 250. NO OTHER PROBLEMS. DECLARED AN EMERGECNY AND LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. PERFORMED VIBRATION DETAILED VISUAL INSPECTION AND SERVERE TURBULENCE OR BUFFETING CONDITION INSPECTION. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.