# SDR SIMA200408802

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2004
- Submitted: May 3, 2004
- Operation: Air carrier
- Aircraft: N720AE
- Make and model: Emb EMB-135LR
- Registry model: [EMB EMB-135LR](https://openairdocs.org/model/embraer-emb-135lr) (OpenAirDocs)
- Aircraft serial: 145279
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Control Unit
- Part number: 3621005009
- Part serial: 1115
- Condition: Faulty
- Location: E/E Bay
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200408802

## Discrepancy

BNA- FLT 4856 - CREW REPORTED A DUAL PITCH TRIM FAIL ON DESCENT.  AUTOPILOT WAS ON AND DID NOT TOUCH ANYTHING.  RECEIVED FAILURE OF MAIN AND BACK UP PITCH TRIM AND 16000 FT.  AFTER LANDING CYCLED C/B AND FAILURE WENT AWAY.  MAINTENANCE REMOVED AND REPLACED THE HORIZONTAL STABILIZER CONTROL UNIT IAW EMB MM.  OPS CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.  (M)

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