What was found
APU BLEED OPEN AT GATE, THE ODOR OF RESIDUAL OIL IN CABIN. APU FOUND TO BE SOURCE OF CABIN ODOR DUE TO OIL IN BLEED AIR SYSTEM, CHANGED APU. AIRCRAFT WAS GROUNDED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
APU BLEED OPEN AT GATE, THE ODOR OF RESIDUAL OIL IN CABIN. APU FOUND TO BE SOURCE OF CABIN ODOR DUE TO OIL IN BLEED AIR SYSTEM, CHANGED APU. AIRCRAFT WAS GROUNDED.