As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A STRONG MOLD ODOR STARTING AT ROWS 26 & AFT. TROUBLE SHOT IAW JOB CARD 26L00021001 & 26L00021002. VERIFIED APU IS AT FAULT. ACFT PLACED ON MEL 49-10-01A. RAN APU, LT & RT PACKS FOR ONE HOUR. INSPECTED FOR LEAKS, NONE FOUND & NO ODOR DETECTED. THIS CLEARS MEL 49-10-01A.