As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 943 EXPERIENCED FUMES AND WHITE SMOKE BOTH IN CABIN AND COCKPIT SHORTLY AFTER LIFTOFF. EMERGENCY DECLARED AND RETURNED TO DEPARTURE. FOUND APU INLET CONTAMINATED WITH APU ENGINE OIL. APU REPLACED. ENGINE BLEED DUCTS BORESCOPED WITH NO OIL FOUND. LT AND RT PACKS INSPECTED WITH NO OIL RESIDUE FOUND. AIRCRAFT RETURNED TO SERVICE.