Bad Yokes

During a scheduled inspection, technicians encountered corroded and bent control yoke boss attachment hardware that proved difficult to remove. After consulting with the manufacturer, the final recommendation was to remove the boss via cutting the bolts (p/n 2315152-33). Manufacturer was able to repair the yoke assembly using SB 31-27-11 and kit 2381602-801. Aircraft had been parked outside without gust locks.

Key Takeaways:

• Multiple incidents across various aircraft types involve the failure or degradation of different "yoke" assemblies, including those for landing gear, control, and skis.
• Corrosion is a significant and recurring factor in many of these yoke failures, frequently leading to structural compromise, cracks, or complete detachment.
• These incidents underscore the critical importance of thorough preflight checks, scheduled maintenance, and adherence to manufacturer service bulletins to detect and prevent yoke-related issues.

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