As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LANDING, FLIGHT ATTENDANT REPORTED ODOR AND SMOKE IN CABIN. AUXILARY POWER UNIT OIL CAP NOT SEATED PROPERLY ON OIL TANK. VERIFIED CAP SECURED. ACCOMPLISHED CABIN ODOR MCM CARD 21-96-01, APU WASH IAW MCM 49-97-11 AND PACK BURN OUT IAW MCM 21-92-12. OPERATIONAL CHECKED GOOD. AIRCRAFT WAS GROUNDED.