As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU (EXCEPT GENERATOR): APU FILLED CABIN WITH SMOKE AFTER RUNNING APPROXIMATELY 3 MINUTES. // SIGNOFF// REMOVED APU PN:3800785-1 SN:P-729 DUE TO FAULTY AND INSTALLED CUSTOMER SUPPLIED REPAIRED APU P/N 3800785-1 S/N P-799. PERFORM OPS CHECK OF APU AND LEAK CHECKS OF APU OIL AND FUEL SYSTEMS. WITH NO DEFETS NOTED. ALL WORK IAW CE-680A AMM 49-10-00 AND 12-20-20.