As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AN UNPLEASANT ODOR IN THE CABIN AFTER SWITCHING APU BLEED FOR PACKS OPERATION. REMOVED AND REPLACED COALESCER BAG FOR LEFT AND RIGHT PACK IAW A MM 21-51-05. PERFORMED OPERATIONAL CHECK OF PACKS IAW AMM 21-00- 00, NO UNPLEASANT ODORS OR DEFECTS NOTED.