# SDR GTIA2024111938533

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2024
- Submitted: November 20, 2024
- Operation: Air carrier
- Aircraft: [N649NK](https://openairdocs.org/aircraft/N649NK), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 7679
- Aircraft time: 25,433 hours, 11,504 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Odor
- Location: Zone 100
- Stage of operation: DE
- 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/GTIA2024111938533

## Discrepancy

DESCENDING THROUGH 4500 FT GOT "DIRTY SOCK" SMELL IN COCKPIT.-COMPLY WITH TSM 05-50-00-810-831 A.  PERFORMED ENG 1 & 2 RUN UP IAW AMM 71-00-00. ISOLATED PACK 1 & 2 AND ENGINE BLEEDS. FOUND SOURCE OF SMELL TO BE APU AND PACK # 1.

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