As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKEOFF, CABIN AND COCKPIT FILLED WITH BLUE SMOKE SMELLED LIKE SKYDROL. APU HAS INGESTED SKYDROL FROM LEAK RT WHEEL WELL. AIRCRAFT LANDED BACK. THE USE OF APU HAS BEEN CANCELLED IAW MEL. WATER SEPARATORS AND COALESER BAGS CLEANED AND AIRCRAFT DISPATCHED SERVICEABLE.