# SDR DALA2017060904639

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 7, 2017
- Submitted: June 12, 2017
- Operation: Air carrier
- Aircraft: [N550NW](https://openairdocs.org/aircraft/N550NW), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26497
- Aircraft time: 43,914 hours, 18,470 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin/Cockpit
- Stage of operation: NR
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017060904639

## Discrepancy

ODOR FROM AIR CONDTIONING SYSTEM, DURING DESCENT AND APPROACH.  NOTICED IN BOTH COCKPIT AND CABIN.  RAN PACKS FOR TWO HOURS. NO ODOR WAS NOTED WITHIN THOSE HOURS. PER B757 AMM 21-00. (9694970)

---
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.