# SDR SIMA200408601

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 2004
- Submitted: May 3, 2004
- Operation: Air carrier
- Aircraft: N813AE
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145539
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Control Unit
- Part number: 3621005009
- Part serial: 1132
- Condition: Malfunctioned
- Location: Horiz Stab
- Stage of operation: AP
- 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/SIMA200408601

## Discrepancy

YYZ- FLT 4904 - DURING APPROACH WHEN AUTO PILOT WAS DISCONNECTED, PITCH TRIM 1-2 INOPERATIVE MESSAGE CAME ON EICAS.  STAYED ON FOR A FEW SECONDS THEN WENT OUT.  BOTH PITCH TRIM SWITCHES WORKED.  LANDED WITHOUT FURTHER PROBLEMS.  MAINTENANCE COMPLIED WITH ETN EB 27-022.  THE HSCU WAS REMOVED AND REPLACED IAW EMB MM.  OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.  (M)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.