# SDR AALA2018090509011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2018
- Submitted: September 5, 2018
- Operation: Air carrier
- Aircraft: [N975UY](https://openairdocs.org/aircraft/N975UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4935
- Aircraft time: 24,311 hours, 9,008 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: 38007081WGEN
- Part serial: P3339
- Condition: Odor
- Part time: 31,979 hours, 15,662 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2018090509011

## Discrepancy

FLIGHT ATTENDANTS REPORTED A STRONG DIRTY SOCK ODOR, WORSE MID TO AFT CABIN.  APU WAS RUNNING.  FOUND APU TO BE CAUSE OF ODOR. THE AIRCRAFT WAS GROUNDED.  REPLACED THE APU ASSEMBLY IAW JC 26L31049003, AND EA 284276.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.