# SDR SCNA20250613210

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2025
- Submitted: June 13, 2025
- Operation: Air carrier
- Aircraft: [N839SY](https://openairdocs.org/aircraft/N839SY), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 42083
- Aircraft time: 15,900 hours, 6,104 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- 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/SCNA20250613210

## Discrepancy

DECENDING THROUGH 7500' UNTIL TOUCHDOWN A VERY PUNGENT ODOR COMING FROM PACKS ONLY ON DESCENT SMELLED SIMILAR TO OLD GYLCOL - RESOLUTION: PERFORMED  FIM TASK 21-00 TASK 806 NO DEFECT NOTED RAN AC COOLING PACKS WITH NO ODOR  SMELL PRESENT 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.