As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT 2 REPORTS BURNT PLASTIC SMELL AFTER LANDING. SMELL WAS IN REAR PORTION OF CABIN. SMELL REMAINED FOR 2 MINUTES & POSSIBLY STARTED WHEN BLEEDS WERE SWITCHED TO THE APU. REFERENCE NRWC 8EG-DFW-01305 ITEM 2 & 3. REMOVED BLOCKAGE IN CABIN SPLITTER & CLEANED TEMP SENSORS. OPERATIONS CHECKED GOOD IAW MM 21-51-00.