As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/A REPORTED, LOUD VIBRATION FROM THE L2 DOOR THRU THE L3 DOOR. ASSOCIATED WITH ODOR, ISOLATED EACH PACK FOUND NR , A/C PACK ASSY AT FAULT, CAUSING VIBRATION. RAN THE NR 2 PACK. NO VIBRATIONS OR ODORS NOTED. NO LOOSE DUCTS FOUND. ALL PACKS EXHIBIT NORMAL FLOWS AND TEMPS. PERFORMED GROUND TEST OF RAM AIR INLETS AND EXHAUSTS, GROUND TESTS PASSED. NO CURRENT FAULTS NOTED.