As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN THE COCKPIT AND CABIN. SUPPLEMENTAL DATA UPDATE FOUND COOLING FAN SHAFT SHEARED AND FAN HOUSING BROKEN. THIS IS THE LATEST -6 FAN WHICH WAS INSTALLED ON THIS APU. HONEYWELL IS WORKING ON THIS LONG TIME PROBLEM WHICH HAD CAUSED MANY DELAYS AND DISCREPANCIES, RENDERING THE APU INOPERATIVE RESULTING IN APU REMOVALS.