As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, HEAVY VIBRATION / NOISE FELT COMING FROM THE COCKPIT FLOOR AREA, CAPTAIN'S SIDE. INSPECTED NOSE WHEEL WELL AREA AND FOUND LT AIR DUCT BOOT LOOSE FOR FLOW CONTROL SYSTEM; REINSTALLED BOOT AND SECURED CLAMPS AND CHECK RT SIDE TOO FOR CONDITION FOUND NORMAL IAW STC ST466CH; CHECKED BRAKES TEMPERATURE AND FOUND BELOW 160°C IAW TEMP STICK GAUGE.