As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START, RECEIVED NOTICE FROM THE AFT GALLEY OF A CAMP FIRE ODOR NEAR THE L4 DOOR THAT DID NOT DISSIPATE. WITH ENGINE 1 & 2 & APU OPERATION. ISOLATION OF PACKS APU & ENGINE. NO CAMP FIRE ODOR NOTED. SMELL CHECK OK AT 4L. NO SMELL NOTED. AFT GALLEY & AFT LAVS NO SMELL NOTED. OK FOR SERVICE.