# SDR SIMA200729908

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2007
- Submitted: October 26, 2007
- Operation: Air carrier
- Aircraft: [N821AE](https://openairdocs.org/aircraft/N821AE), registered now
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145577
- Aircraft time: 13,727 hours, 11,771 cycles
- System (JASC): [2730 · Elevator Control System](https://openairdocs.org/jasc/2730)
- Part: Control Unit
- Part number: 3621001013
- Part serial: 1237
- Condition: Malfunctioned
- Location: Stab Trim
- Stage of operation: CL
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200729908

## Discrepancy

AIRCRAFT WAS RETURNING TO FIELD WITH A TRIM PROBLEM CREW REPORTED ON THE GROUND THAT THE MAIN PITCH TRIM WAS INOP FOLLOWED THE AOM RETURNED TO LAX.  REMOVE AND REPLACE HSCU IAW EMB 140 AMM 27-40-01,  OPS CHK GOOD.  AIRCRAFT RETURN TO SERVICE.

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