As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FIRE IN CRUISE AT FL 400(<P>INSP APU COMPARTMENT NO EVIDENCE OF FIRE, FOUND DEFECTIVE HARNESS, PERFORMED APU FIRE INSP PER AMM 49-11-00-208-029. DEACTIVATED APU & FIRE DETECTION SYSTEM / EXTINGUISHING SYSTEM PER DDG & EO4426A077.</P>)