# SDR SIMA20150122005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2015
- Submitted: January 26, 2015
- Operation: Air carrier
- Aircraft: [N663AR](https://openairdocs.org/aircraft/N663AR), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145778
- Aircraft time: 28,257 hours, 24,224 cycles
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Control Unit
- Condition: Malfunctioned
- Location: Feedback
- Stage of operation: TO
- How discovered: O
- Nature of condition: E
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20150122005

## Discrepancy

ON TAKEOFF ROLL, AN UNCOMMANDED STEERING EVENT OF OSCILLATION AT HIGH SPEED.  LANDING WAS NORMAL,  BUT HEARD A MOMENTARY HIGH PITCH NOISE WHEN TILLER WAS ENGAGED.  R & R FEEDBACK UNIT IAW AMM 32-50-07.  OPS CHECKED GOOD.

---
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.