As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: THE ENTIRE CABIN HAS A MUSTY ODOR WHEN THE PACKS ARE ON. ODOR IS WORST ON THE GROUND WHEN THE APU IS SUPPLYING AIR. MAINTENANCE ISOLATED SOURCE OF ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED.** (OPEN)