As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED A STRONG BURNING ODOR IN THE COCKPIT, DURING FLIGHT. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND PLACED THE THE NR 1 PACK ON MEL 21-51-00-3 CAT C. THE AIRCRAFT WAS SUBSEQUENTLY APPROVED FOR RETURN TO SERVICE. OPEN