What was found
STL - APU HAS SMOKE COMING FROM COMPARTMENT AND BLEED LINE UNDER BELLY. MAINTENANCE REPLACED DUCT SECTION UNDER BELLY. GROUND RUNS REVEALED NORMAL. (Z)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STL - APU HAS SMOKE COMING FROM COMPARTMENT AND BLEED LINE UNDER BELLY. MAINTENANCE REPLACED DUCT SECTION UNDER BELLY. GROUND RUNS REVEALED NORMAL. (Z)