# SDR SWAA010026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2001
- Submitted: January 12, 2001
- Operation: Air carrier
- Aircraft: [N623SW](https://openairdocs.org/aircraft/N623SW), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27933
- Aircraft time: 16,756 hours, 14,642 cycles
- Engine: Ge CFM56*
- Engine time: 16,756 hours, 14,642 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Odor
- Location: Nr 1
- Stage of operation: TO
- How discovered: O
- Nature of condition: B
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA010026

## Discrepancy

AIR TURNBACK, DECLARED EMERGENCY.  DURING TAKEOFF A GREY, ACRID ODOR/SMOKE STARTED FILLING THE COCKPIT.  AS POWER WAS REDUCED, SMOKE DECREASED.  REMOVED AND REPLACED NR 1 ENGINE PER MM AND SAM FORMS.  OPS AND LEAK CHECK GOOD.

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