As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2561 THE CREW REPORTED A BURNING SMOKE SMELL IN THE CABIN WITH THE NUMBER TWO ENGINE, NUMBER 2 BLEED, AND NUMBER TWO PACK RUNNING. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE REMOVED AND REPLACED THE NUMBER TWO ENGINE, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. NO PARTS WERE IDENTIFIED AS CAUSING THE BURNING SMOKE ODOR.