# SDR SWAA2026052105196

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2026
- Submitted: May 22, 2026
- Operation: Air carrier
- Aircraft: [N294WN](https://openairdocs.org/aircraft/N294WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32540
- Aircraft time: 60,346 hours, 36,557 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- 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/SWAA2026052105196

## Discrepancy

BURNING ODOR IN CABIN AND COCKPIT. CLIMB OUT AT 9000. QRC / QRH COMPLETED. EMERGENCY DECLARED RETURN TO PHX.  PERFORMED FIM 21-00 TASK 806 A.(4) PERFORMED ENGINE RUN IAW 71-00-00. FOUND NO BURNING ODOR.

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