As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW HEARD A HUM AND FELT A HIGH FREQ VIBRATION WAS FELT SLIGHTLY IN THE RUDDER PEDALS. REPLACED RIGHT INBOARD LOWER FLAP SHROUD SEAL. REPLACED RIGHT OVERWING FAIRING NUT PLATES. REPLACED RIVETS IN RIGHT INBOARD FLAP SHROUD, AND C/W FLAP RIGGING. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. (M)