As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT INSPECTION, CREW SMELLED SMOKE IN CABIN AND DISCOVERED HAND TOWELS IN LAVATORY ON FIRE AND A SMALL PORTION OF THE SIDEWALL NEAR THE ELECTICAL OUTLET BEGINNING TO MELT. FOUND WIRING CONNECTOR BF MIS-PINNED. RE-PINNED CONNECTOR, BENCH CHECKED INVERTER, OPS CHECKED GOOD IAW HAWKER 800XP MM CHAPTER 25-40-14 REV 19, SEC 103.