# SDR DALA2024072207366

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2024
- Submitted: July 22, 2024
- Operation: Air carrier
- Aircraft: [N855DN](https://openairdocs.org/aircraft/N855DN), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 31966
- Aircraft time: 27,557 hours, 10,309 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Fumes
- Location: Zone 200
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024072207366

## Discrepancy

SHIP 3855 -ATB/FUMES- RETURNED ATL DUE TO FUMES IN THE COCKPIT AND CABIN DURING CLIMB. CORRECTIVE ACTION: PERFORMED ENGINE RUNS AT VARIOUS POWER SETTINGS AND PERFORMED AIR SAMPLES DURING ENTIRE RUN. ALL READINGS WERE LOW. REPLACED RECIRCULATION FILTERS.

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