# SDR SIMA200217709

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2002
- Operation: Air carrier
- Aircraft: [N609AE](https://openairdocs.org/aircraft/N609AE), registered now
- Make and model: Emb EMB-145
- Registry model: [EMB EMB-145](https://openairdocs.org/model/embraer-emb-145) (OpenAirDocs)
- Aircraft serial: 145069
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Hydraulic System
- Part number: 3621001007
- Part serial: 1142
- Condition: Inoperative
- Location: Tail
- Stage of operation: CR
- How discovered: C
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200217709

## Discrepancy

IN CRUISE FLIGHT MAIN PITCH TRIM WAS ENGAGING BY ITSELF CREW DROP OFF AUTO PILOT AND IT WAS STILL DOING IT.  CALLED MOC AND HAD THE CREW PULL THE NO 1 TRIM C/B STILL DID NOT HELP.  CREW ELECTED TO DIVERT TO GET THE AIRCRAFT ON THE GROUND AS SOON AS POSSIBLE.  C/A: MAINTENANCE REMOVED AND REPLACED THE HSCU IAW MM.  OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.

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