# SDR DXTA2009042903621

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2009
- Submitted: April 29, 2009
- Operation: Air carrier
- Aircraft: [N712QS](https://openairdocs.org/aircraft/N712QS), registered now
- Make and model: Gulstm 200
- Aircraft serial: 073
- Aircraft time: 4,747 hours, 2,892 cycles
- System (JASC): [2710 · Aileron Control System](https://openairdocs.org/jasc/2710)
- Part: Feel Unit
- Condition: Malfunctioned
- Location: Ailerons
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2009042903621

## Discrepancy

AT FL390 WITH AUTO PILOT ON ACFT APPEARED TO BE DUTCH ROLLING. WITH AP OFF, ACFT AILERONS ARE VERY STIFF & DIFFICULT TO OPERATE. ROLLS STARTED AT 2 DEGREES & FINALLY WAS DOING 15 DEGREES. SAT WAS -60 AND DECENDED TO FL 270. PROBLEM GREATLY REDUCED WITH TEMP SAT - 30. APPROACH & LANDING, PROBLEM COMPLETLY RESOLVED.   SERVICED AILERLON ARTIFICIAL FEEL SPRING UNIT. REMOVED OLD SILICONE GREASE & APPLIED NEW SILICONE GREASE. CYCLED AILERON SYSTEM SEVERAL TIMES & CHECKED SYSTEM FOR FULL & FREE MOVEMENT WITHOUT BINDING. ALL WORK IN REFERENCE TO MM 27-10-35

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