As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THERE IS A STRONG MUSTY & MOLDY ODOR, LIKE DIRTY SOCKS. INSPECTED CABIN AC SYS CONDENSER FOR CLEANLINESS & INSPECTED CABIN RECYCLE VLVS INLET, NO DEFECTS NOTED. INSPECTED WATER SEPARATOR FILTER & CLEANED IAW AMM 21-52-18-100-801. REINSTALLED FILTER & RAN THE SYS, NO FOUL SMELL. OPERATIONS CHECKED GOOD.