# SDR SIMA20040501

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2004
- Submitted: August 18, 2004
- Operation: Air carrier
- Aircraft: [N639AE](https://openairdocs.org/aircraft/N639AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145182
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Control Unit
- Part number: 3621005009
- Part serial: 4033
- Condition: Inoperative
- Location: Horizontal Stab
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20040501

## Discrepancy

ORD - FLT 4057 - DURING CLIMB, CREW REPORTED A PITCH TRIM 1 INOPERATIVE MESSAGE ON EICAS.  MAINTENANCE REMOVED AND REPLACED THE HORIZONTAL STABILIZER CONTROL UNIT, IAW EMB MM.  OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.  (M)

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