As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG MUSTY ODOR LIKE WET SOCK WHEN AIR-CONDITIONING TURNED ON. REMOVED AND REPLACED THE FWD EVAPORATOR UNIT AND THE RECEIVER DRYER ASSY WITH NJA SUPPLIED NEW PARTS. SUCCESSFUL OPERATIONAL CHECKS/ FUNCTIONAL CHECKS WERE PERFORMED. REF. EMBR-505 AMM 21-52-03, 21-52-00 AND 12-17-00 RECEIVER DRYER ASSY P/N OFF/ON: 1134275-12 S/N OFF/ON: N/A FWD EVAPORATOR UNIT P/N: 1133850-103 S/N OFF: UNK S/N ON: 1326