As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTICED AN OILY BURNING SMELL IN THE AFT CABIN AFTER AIRCRAFT SHUTDOWN. PERFORMED CLEANING PROCEDURE FOR OIL IN THE BLEED AIR SYSTEM AND THE AIR CONDITIONING PACK IAW LIEBHERR-AEROSPACE SIL LS_CL300_01 REV. NO: 1 DATED AUG 07/19. NO DEFECTS NOTED, NO "BAD ODOR" PRESENT IN CABIN OR COCKPIT.