As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU DIRTY SOCK SMELL WITH APU AIR ON ( AUXILIARY POWER UNIT (APU)(NOTE MANIFOLD ISOLATION VALVE MUST BE OPERATIONAL) ). GROUNDED - YES. REMOVED AND REPLACED APU PER AMM 49-10-00 OPS CHECK GOOD OK FOR SERVICE PLACARD REMOVED MIC UPDATED.