As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 615 - RDU TO JAX - FLIGHT CREW REPORTED BURNING PLASTIC ODOR IN COCKPIT FROM PACK 1 & AUTO PRESSURE FAIL. CONTRACT MX TAC-AIR PERFORMED OPERATIONAL CHECK OF PACK 1 AND COULD NOT DUPLICATE ODOR AND MEL AUTO PRESSURE CONTROL. OPEN