What was found
SPARKS COMING FROM APU EXHAUST. FLIGHT CREW DISCHARGED 1 FIRE BOTLE. RETURNED TO BLOCKS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SPARKS COMING FROM APU EXHAUST. FLIGHT CREW DISCHARGED 1 FIRE BOTLE. RETURNED TO BLOCKS.