# SDR SWAA2023031414893

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2023
- Submitted: March 14, 2023
- Operation: Air carrier
- Aircraft: [N485WN](https://openairdocs.org/aircraft/N485WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32473
- Aircraft time: 62,082 hours, 37,072 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Trim Tab
- Condition: Faulty
- Location: Zn 100 Fus Lower
- Stage of operation: CL
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023031414893

## Discrepancy

AFTER TAKE OFF STAB OUT OF TRIM ANNUNCIATOR ILLUMINATED WITH AUTO PILOT ENGAGED. THEN EXTINGIUSHED AFTER 10 SECONDS; LATER ON CLIMB OUT STAB TRIM WILL NOT TRIM NOSE UP.<[01] TROUBLE SHOT PER FIM 27-41 TASK 803. PROBLEM FOUND TO BE INTERMITTENT. ELECTRIC STAB TRIM OPERATES NORMAL UP AND DOWN. AIRCRAFT OK FOR SERVICE.

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