As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: F/A REPORTED ADVERSE PHYSIOLOGICAL SYMPTOMS DUE TO FUMES IN THE AFT PART OF CABIN. MAINTENANCE FOUND APU TO BE SOURCE OF THE ODOR. MAINTENANCE FOUND LUBE JET ASSEMBLY CAST FITTING CRACKED AND LEAKING. REMOVED AND REPLACED JET ASSY IAW CMM 49-25-65. LEAK AND OPS CHECK GOOD.