# SDR GTIA2022022136290

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2022
- Submitted: February 21, 2022
- Operation: Air carrier
- Aircraft: N534NK
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 3395
- Aircraft time: 50,127 hours, 22,988 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: None
- Condition: None
- Stage of operation: DE
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA2022022136290

## Discrepancy

DURING DESCENT THROUGH 40000' F/A REPORTED "DIRTY SOCK" SMELL IN AFT CABIN. APU WAS OFF. CHECK-LIST PERFORMED. SMELL WAS THEN REPORTED AS VERY FAINT-TROUBLESHOT IAW TSM 05-50-00-810-831-A. FOUND APU TO BE SORCE OF AIR QUALITY EVENT. SEE LP 2810952-02 FOR APU DEFERRAL

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