# SDR AALA201712299001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2017
- Submitted: January 8, 2018
- Operation: Air carrier
- Aircraft: [N587UW](https://openairdocs.org/aircraft/N587UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6236
- Aircraft time: 11,866 hours, 4,592 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: O-Ring
- Condition: Damaged
- Location: Apu Starter
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201712299001

## Discrepancy

FLIGHT ATTENDANT REPORTED A DIRTY SOCK SMELL IN AFT PORTION OF AIRCRAFT ON DESCENT. APU STARTER LEAKING.   REPLACED DAMAGED O-RING FOR APU STARTER MOTOR PER AMM 49-42-51-04-01. FUNCTIONAL CHECKED OK. LEAK CHECKED GOOD.  AIRCRAFT WAS GROUNDED.

---
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.