As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4916 - DURING FLIGHT FROM HOU TO DFW, CAPTAIN REPORTED BOTH PACKS ONLY PRODUCING WARM TO HOT AIR AND A STORNG BURNING SMELL OF PLASTIC. AIRCRAFT LANDED SAFELY IN DFW. MAINTENANCE REMOVED AND REPLACED LEFT PACK ACM. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. (M)