As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED BURNING SMELL IN CABIN. SUPPLEMENTAL AC SHUT OFF IN FLIGHT AND WOULDN'T TURN ON AGAIN. AC LANDED WITHOUT FURTHER INCIDENT. INSPECTED AC, TRANSFERRED TO DMR IAW MEL 21-50-2 SAAB 340 CAT C. ALL PLACARDS INSTALLED. C/B N18 AND N19 PULLED PER MX CONTROL.