As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VIBRATION AND HUM ADJACENT TO ROW 9. THE REPORTED VIBRATION THAT WAS HEARD FROM ROW 9 (LEFT) WAS A RESULT OF DETERIORATED SEALANT ON THE UPPER WING TO BODY FAIRING AT THAT SAME LOCATION. THE FAIRING WAS RESEALED AT THE IMC AND THE AIRCRAFT RELEASED.