# SDR GTIA2024060138149

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2024
- Submitted: June 2, 2024
- Operation: Air carrier
- Aircraft: [N658NK](https://openairdocs.org/aircraft/N658NK), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6736
- Aircraft time: 29,643 hours, 13,200 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: UNKNOWN
- Condition: Odor
- 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/GTIA2024060138149

## Discrepancy

FUME EVENT DIRTY SOCK SMELL DURING DESCENT WITH ONLY PACK 1 ON-REF LOG PAGE: 3428253-1 FOR APU R/R OPS TEST APU IAW AMM 49-00-00 OPS CHECK OK NO CONTAMINATION FOUND NO ODOR FOUND VIA AERO TRACER NO OTHER DEFECTS FOUND A/C OK FOR SERVICE

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