# SDR MALA040855

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2004
- Submitted: December 22, 2004
- Operation: Air carrier
- Aircraft: N421XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B421
- Aircraft time: 18,029 hours, 19,751 cycles
- System (JASC): [2730 · Elevator Control System](https://openairdocs.org/jasc/2730)
- Part: Actuator
- Part number: D97439
- Part serial: 97B3391
- Condition: Failed
- Location: Pitch Trim
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA040855

## Discrepancy

BOTH CA AND F/O PITCH TRIM WILL NOT GO BELOW 1/2 UNIT BELOW NEUTRAL.  AIR RETURN TO DTW.  MAINTENANCE REMOVED AND REPLACED MAIN PITCH TRIM ACTUATOR P/N D97439, S/N ON 98G18850, S/N OFF 97B3391, IAW AMM CHAPTER 27-30.  ALL OPERATIONAL AND RIG CHECKS GOOD.

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