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 IN CABIN DURING CLIMB AND AFTER LANDING WHEN APU BLEED IS TURNED ON. **SUPPLEMENTAL REPORT FOR AALA202508087164: MAINTENANCE FOUND EVIDENCE OF OIL LEAKING AROUND THE APU OIL COOLING FAN AND REPLACED IT PER AMM 49-52-51. MAINTENANCE CLEANED THE APU COMPARTMENT AND DUCTING AS REQUIRED ALONG WITH ACCOMPLISHING A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM PER TASK CARD 26L00021014. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO LEAKS OR ODORS NOTED. ** (CLOSED)