# SDR GTIA2023112137628

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2023
- Submitted: November 21, 2023
- Operation: Air carrier
- Aircraft: [N679NK](https://openairdocs.org/aircraft/N679NK), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7852
- Aircraft time: 19,366 hours, 8,499 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/GTIA2023112137628

## Discrepancy

DESCENDING THROUGH 6000 WE FELT A MUSTY SMELL / BURNING SMELL AFTER FOLLOWING QRH WE ISOLATED PACK 1. THE ODOR WENT AWAY. ( PACKS  A321 WITHOUT MOD. 157080/MP K17996 (PACK FLOW SELECTOR) AND WITH MOD. 30626/ MP K6443 (ENHANCED ECS) )-PERFORMED 1D OF CABIN ODOR IAW TSM 05-50-00. PERFORMED LEVEL C REMOVAL OF CONTAMINATION OF ECS IAW AMM 21-00-00 AND DECONTAMINATION OF THE BLEED AIR DUCTS LEVEL C IAW AMM 36-10-00. NO SIGNS OF OIL INEC SYS. ALSO CHANGED PACK 1 RECIRCULATION FILTER(FIN:4010HM) IAW AMM 21-21-45. THIS CLEARS DMI #3313817-1. PLACARD REMOVED, MOC NOTIFIED & DMI LOGPAGE UPDATED.

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