As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS MUSTY ODOR SMELLED THROUGHOUT CABIN AND COCKPIT ONCE APU BLEED TURNED ON. MAINTENANCE ACCOMPLISHED CABIN ODOR TROUBLESHOOTING IAW JOB CARD 26L00021001 & 26L00021002. APU IDENTIFIED AS SOURCE OF ODOR FOR THIS EVENT. ***SUPPLEMENTAL INFORMATION: MAINTENANCE CLEANED APU INLET AND DOOR. ALSO PERFORMED APU BLEED DUCT BLAST. NO NOTABLE ODER NOTICED AT THIS TIME.*** (CLOSED)