As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS ON DESCENT FLIGHT ATTENDANTS AND PASSENGERS HAD SMELL OF BURNING, PLASTIC. COMPLAINED OF SORE EYES AND HEADACHE. MAINTENANCE REMOVED AND REPLACED APU STARTER MOTOR SEAL IAW AMM 49-42-51. OPS AND LEAK CHECK GOOD.