# SDR 2000UALA00805

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2000
- Submitted: January 17, 2001
- Operation: Air carrier
- Aircraft: N957UA
- Make and model: Boeing 737522
- Aircraft serial: 26707
- Aircraft time: 22,251 hours, 14,107 cycles
- Engine: Ge CFM56*
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Relay
- Condition: Failed
- Location: Stab Trim
- Stage of operation: NR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2000UALA00805

## Discrepancy

UNCOMMANDED STAB TRIM MOVEMENT ON THREE SEPARATE OCCASIONS.  *S/D*  REPLACED STAB TRIM CONTROL RELAY R64.  OPS TESTED NORMAL.

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