As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL THREE FLIGHT ATTENDENTS REPORTED AN ODD ODOR DURING PUSHBACK. DIRTY SOCK OR OIL ODOR. ACFT GROUNDED. TROUBLESHOT IAW TSM 49-00-81-810-874-A. FOUND EXCESSIVE GREASE CAKED WITHIN INTAKE SCOOP ON THE RT APU DOOR INTAKE DUCT. NO OTHER OIL PRESENT. PERFORMED HIGH POWER ENGINE RUNS IAW AMM 71-00-00, AND PERFORMED DECONTAMINATION OF ECS IAW AMM 21-00-00-615-001-A. NO ODOR DETECTED. SYS OK FOR SERVICE.