As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED THAT SHORTLY AFTER TAKE OFF THEY GOT SMOKE IN THE COCKPIT. THEY SHUT THE APU DOWN AND THE SMOKE DISSIPATED. MAINTENANCE FOUND THE APU STARTER GARLOCK SEAL TO BE LEAKING, ALLOWING OIL TO MIGRATE INTO THE APU AIR INLET.