As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ACRID SMELL STARTED ON DESENT AT 22000, ALL THE WAY TO THE GATE IN FLIGHT DECK AND IN THE BACK BETWEEN ROWS 17-25, APU BLEED OFF. MAINTENANCE DETERMINED THE SOURCE OF THE ODOR WAS THE APU. **SUPPLEMENTAL REPORT FOR AALA202209232261: REPLACED APU PER TASK CARDS 26L31049003, 26T31049006 AND 26L00021004.** (CLOSED)