As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT SMOKE: AFTER SHUTDOWN AND APU AIR APPLIED COCKPIT AND CABIN FILLED WITH SMOKE // SIGNOFF// REPLACED APU WITH RENTAL APU IN ACCORDANCE WITH 680A MM CH 49-10-00. LEAK AND OPS CHECKS GOOD. REPLACED HEPA FILTER WITH NEW IN ACCORDANCE WITH 680A MM CH. 21-70-10 COMPLIED WITH NETJETS ENVIROMENTAL CONTROL SYSTEM BLEED AND TRIM BURN OUT PROCEDURES IAW NETJETS AVIATION TC-680A-21 181006MR1 DATED 10-16-2018