# SDR 2024FA0000235

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2024
- Submitted: March 20, 2024
- Operation: General aviation
- Aircraft: [N616TS](https://openairdocs.org/aircraft/N616TS), registered now
- Make and model: Cirrus SF50
- Registry model: [Cirrus SF50](https://openairdocs.org/model/cirrus-design-sf50) (OpenAirDocs)
- Aircraft serial: 0429
- Aircraft time: 234 hours, 147 cycles
- System (JASC): [2710 · Aileron Control System](https://openairdocs.org/jasc/2710)
- Part: Spring
- Part number: 37324001
- Condition: Short
- Location: Aileron
- Part time: 234 hours, 147 cycles
- Component: Aileron Control, Cirrus, SF50
- Stage of operation: IN
- How discovered: C
- Nature of condition: F, W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2024FA0000235

## Discrepancy

AILERON FAILED TO RETURN TO NEUTRAL POSITION DURING ROLL CENTERING SPRING FUNCTIONAL TEST IN ACCORDANCE WITH AMM CH 27-10. INVESTIGATION REVEALED THE FACTORY-INSTALLED CENTERING SPRING IS INCORRECT (TOO SHORT) PER THE IPC CH 27-10-02. THE AILERON CENTERING SPRING WAS REPLACED AND TESTED OK. NOTE: THIS SAME DEFECT HAS BEEN IDENTIFIED ON NON-FAA REGISTERED AIRCRAFT OF THE SAME TYPE, AND APPEARS TO BE A PRODUCTION ERROR.

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