As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED TO CREW STRONG BURNING SMELL IN CABIN. CREW POWER AIRCRAFT DOWN. AFTER INSPECTING A/C WITH APU BLEED ON AND OFF, SMELL HAD GONE AWAY. MNT AND CREW SUSPECT APU EXHAUST HAD BLOWN INTO CABIN AREA. MNT INSPECTED APU COMPARTMENT. NO DEFECTS NOTED.