# SDR SWIA200312507

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2003
- Submitted: October 21, 2003
- Operation: Air carrier
- Aircraft: N189SW
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120048
- Aircraft time: 39,300 hours, 48,054 cycles
- Engine: Pwa PW118
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Pcu
- Part number: 3211001003
- Part serial: 0295
- Condition: Malfunctioned
- Location: Rudder
- Part time: 2,390 hours, 3,553 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: F
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA200312507

## Discrepancy

WHILE IN DESCENT AT 250KTS, UNABLE TO TRIM THE AIRCRAFT WITH THE RUDDER TRIM.  TURNED OFF A/P AND YAW DAMPER, STILL NO GOOD. TURNED OFF BLUE SYSTEM HYDRAULICS AND IT WORKED.  REMOVED AND REPLACED RUDDER PCU IAW MM 27-22-01.  OPS CHECKS AND LEAK CHECKS GOOD.

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