As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ODOR OF BURNING IDENTIFIED IN COCKPIT DURING DESCENT. IT OCCURRED SUBSEQUENT TO BOTH LEFT & RIGHT HIGH PRESSURE BLEED VALVES OPENING. FLIGHT CREW DONNED THE OXYGEN MASKS , DECLARED AN EMERGENCY AND THE AIRCRAFT LANDED AT MIA SAFELY WITH OUT FURTHER INCIDENT. (OPEN)