# SDR SWAA050754

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2005
- Submitted: March 16, 2005
- Operation: Air carrier
- Aircraft: N679AA
- Make and model: Boeing 737-3A4
- Registry model: [Boeing 737-3A4](https://openairdocs.org/model/boeing-737-3a4) (OpenAirDocs)
- Aircraft serial: 23291
- Aircraft time: 59,991 hours, 51,990 cycles
- System (JASC): [2760 · Drag Control System](https://openairdocs.org/jasc/2760)
- Part: Mixer Box
- Part number: 65463607
- Part serial: E1927
- Condition: Faulty
- Location: Lt Wing W/W
- Stage of operation: CL
- How discovered: 9
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA050754

## Discrepancy

AIR TURNBACK IMMEDIATELY AFTER TAKEOFF, NOTED HEAVY ROLL TO LT, ACCOMPANIED BY CONSIDERABLE RUMBLING.  REQUIRED 5 UNITS OF RUDDER TRIM & UNKNOWN AILERON TRIM AT 1/2 YOKE DEFLECTION TO LEVEL WINGS.  REMOVED AND REPLACED SPOILER MIXER & NR 3 SPOILER ACTUATOR PER MM.

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