# SDR SWAA000033

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2000
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N512SW
- Make and model: Boeing 737-5H4
- Registry model: [Boeing 737-5H4](https://openairdocs.org/model/boeing-737-5h4) (OpenAirDocs)
- Aircraft serial: 24189
- System (JASC): [2212 · Altitude Controller](https://openairdocs.org/jasc/2212)
- Part: Sensor
- Part number: H504B
- Condition: Inoperative
- Location: Elevator Shift
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA000033

## Discrepancy

WHEN AUTOPILOT ENGAGED, ACFT WOULD NOT HOLD ALTITUDE (RAPID NOSE DOWN TRIM).  REMOVED AND REPLACED ELEVATOR NEUTRAL SHIFT SENSOR PER MM.

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