As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT HAD ABNORMAL INFLIGHT NOISE-VIBRATION. SEE AIRCRAFT LOG FOR DETAILS. AIR NOISE ON RIGHT SIDE OF CABIN BETWEEN 28 & 35. *S/D* AREA CHECKED AND FOUND 12 INCHES OF SEAL POPPED ON THE CENTER CARGO COMPARTMENT PIT DOOR. SEAL REINSTALLED AND DOOR OPERATIONALLY CHECKED OK.