As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5506 - SMOKE IN COCKPIT AND CABIN NOTED WHEN PACKS TRANSFERRED TO APU. DECLARED EMERGENCY. EVACUATED PASSENGERS ON TAXIWAY. FOUND RIGHT COALESCER BAG WET WITH OIL. REPLACED BAG. FOUND OIL LEVEL SERVICEABLE ON BOTH ENGINES AND APU. NO FURTHER DEFECTS.