# SDR 2025FA0000119

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2025
- Submitted: February 19, 2025
- Operation: General aviation
- Aircraft: [N50LU](https://openairdocs.org/aircraft/N50LU), registered now
- Make and model: Cirrus SR20
- Registry model: [Cirrus SR20](https://openairdocs.org/model/cirrus-design-sr20) (OpenAirDocs)
- Aircraft serial: 2424
- Aircraft time: 1,388 hours
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Lock Nut
- Part number: MS21042208
- Condition: Defective
- Location: Zone 100
- Part time: 1,388 hours
- Stage of operation: CR
- How discovered: V
- Nature of condition: D
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2025FA0000119

## Discrepancy

DEFECTIVE LOCK NUT ON SCREW THAT CONNECTS THE YOLK ASSEMBLY TO THE AILERON ACTUATION BRACKET, CAME APART AFFECTING THE PILOT SIDE AILERON CONTROL.

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