Quarter-Turn Fasteners

A rash of cowling separations aboard Textron bizjets reminds us all how they wear and can fail.

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Most pilots are familiar what the industry calls “quarter-turn” fasteners, those quick-release devices used to secure engine cowlings and fairings on aircraft of all sizes and uses. They typically go by their manufacturer’s name, like Camloc or Dzus. They sometimes require a special tool and they can be difficult to adjust to ensure their security. […]
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