# SDR SWAA2021040159139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2021
- Submitted: April 1, 2021
- Operation: Air carrier
- Aircraft: [N273WN](https://openairdocs.org/aircraft/N273WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32528
- Aircraft time: 47,285 hours, 28,322 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Motor
- Part number: 6355C000101
- Part serial: 4009
- Condition: Faulted
- Location: Stab Trim
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021040159139

## Discrepancy

ENGAGED AUTOPILOT A GOT A STAB OUT OF TRIM LIGHT DISENGAGED THE AUTOPILOT. ENGAGED AUTOPILOT B GOT A STAB OUT OF TRIM INDICATION. BOTH TIMES THE STABILIZER WAS NOT TRIMMING WITH AUTOPILOT ENGAGED. / R+R STAB TRIM MOTOR&RELAY R850 FOR TROUBLE SHOOTING DISCREPANCY REMAINS OPEN ON LP # 1458102 REF AMM 27-41-71 REF SWPM 20*80 RAR # 93180 P/N OFF 6355C0001-01 P/N ON 6355C0001-02 S/N OFF 4009 S/N ON 07058

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