What was found
(CAN) ON RAMP WITH APU AIR ON LH PACK HP BLEED OFF, FUMES PRESENT IN CABIN. WHEN ENGINES RUNNING PACK OPERATION NORMAL. MAINTENANCE ACTION INVOLVED CHANGING COALESCER BAGS AND SYSTEM CHECKED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) ON RAMP WITH APU AIR ON LH PACK HP BLEED OFF, FUMES PRESENT IN CABIN. WHEN ENGINES RUNNING PACK OPERATION NORMAL. MAINTENANCE ACTION INVOLVED CHANGING COALESCER BAGS AND SYSTEM CHECKED.