# SDR GTIA2023110337591

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2023
- Submitted: November 8, 2023
- Operation: Air carrier
- Aircraft: [N935NK](https://openairdocs.org/aircraft/N935NK), registered now
- Make and model: Airbus A320-271N
- Registry model: [Airbus A320-271N](https://openairdocs.org/model/airbus-a320-271n) (OpenAirDocs)
- Aircraft serial: 10108
- Aircraft time: 10,888 hours, 4,466 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/GTIA2023110337591

## Discrepancy

DESCENDING THROUGH 5,OOO FT, OBSERVED A STRONG MUSTY SMELL IN COCKPIT. I TURNED PACK 1 OFF AND SMELL DISSIPATED.-PERFORMED ENGINE RUN OF ENGINES 1 & 2 IAW AMM 74-00-00-860-823-A & OP TEST OF PACKS 1 & 2 IAW AMM 21-61-00-710-001-A, CONFIRMED PACK 2 OPERATIVE WITHOUT FAULT, PACK 1 FOUND NO DEFECT AT THIS TIME.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.