Release Mechanisms

Lesson Objective

Regulatory Requirement

• §61.87(i)(11)
• Private Pilot Practical Test Standard II-C

Content

• Nose hook/CG hook
• Schweizer release
• Tost release
• back-release function of CG hooks
• Maximum and Minimum towline strengths
• Use of weak links
• Hazards of hooking Tost rings onto Schweizer hooks

Completion Standards

• Calculate the appropriate towline strengths
• Use of weak links
• Correct usage of appropriate hook for the aircraft

Prerequisite Study

• Glider Flying Handbook, Page 7-11, figure 7-13
• Glider Flying Handbook, Page 6-2 through 6-4; figure 6-8
• 14 CFR § 91.309 Towing: Gliders and unpowered ultralight vehicles.
• Amazing Article from Tom Knauff about invulnerability and the hazards of using the wrong tow connection.