As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE LOUD HUMMING DEVELOPED IN CEILING ABOVE DOOR 1R. VIEWED ABOVE DUCTS AND FOUND NO OBSTRUCTIONS OR DETERIORATED DUCTING. RE-ATTACHED DUCTS. ACCMP'D CH2296, NOTHING FOUND. SEALANT ON UPPER GPS ANTENNAS DETERIORATED. REPLACED ANTENNAS AND RESEALED.