# SDR GTIA2023120137667

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2023
- Submitted: December 2, 2023
- Operation: Air carrier
- Aircraft: [N671NK](https://openairdocs.org/aircraft/N671NK), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7246
- Aircraft time: 23,573 hours, 10,346 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- 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/GTIA2023120137667

## Discrepancy

DIRTY SOCK SMELL THROUGHTOUT AIRPLANE IN DESCENT BELOW 15,000 FT TO LANDING-REF T/C TI 2100-2004-CEO CRONIC QUALITY T/C AND CLEANING. FOUND RESIDUAL OIL IN APU INLET. CLEANED INLET IAW AMM 12-21-00. RAN APU AND PERFORMED LEAK CHECK IAW AMM 49-00-00, LEAK CHECK GOOD. PERFORMED ECS CLEANING PACK 1 & 2 IAW AMM 21-00-00. R&R RECIRCULATING FILTERS AS PRECAUTIONARY MEASURE IAW AMM 21-21-41. RAN ENG 1 & 2 IAW AMM 71-00-00. CONTINUED ON LP 3292171 ITEM 2.

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