As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG VIBRATION FELT IMMEDIATELY AFTER TAKEOFF AND CONTINUED UNTIL TOUCHDOWN. SMALL VIBRATION IN FLIGHT CONTROLS. GENERATOR INDICATIONS WERE NORMAL. AFTER LANDING LAV CAP WAS FOUND LOOSE. COMPLIED WITH 05-50-27, AIRCRAFT NOISE AND VIBRATION INSPECTION, IAW AMM INSPECTED LAV CAP NLG MAIN LANDING GEAR AND WING TO FUSELAGE SEALS NO DEFECTS NOTED.