Cessna 120 — Flight Manual

This document provides detailed installation instructions for the TrickAir Sport Model 1500 main landing gear skis specifically designed for the Cessna 120, 140, and 140A aircraft models. It outlines the necessary equipment, procedures, and safety considerations for properly installing the skis to ensure optimal performance and compliance with FAA regulations. The installation must be performed on a level surface, and the document emphasizes the importance of proper alignment and ground clearance for the skis. It also includes sections on weight and balance, tire checks, and post-installation procedures, making it a comprehensive guide for aircraft technicians and operators looking to equip their Cessna aircraft with skis for winter operations.

• The installation must be performed on a level surface, preferably concrete or asphalt.
• Verify the airplane weight and balance is current before installation.
• Main wheel tire size must be 6.00-6 and inflated to the manufacturer's recommended pressure.
• Ski ground clearance should be between 0.50 to 0.75 inches after installation.
• The rear limit cable should provide a positive ski incidence angle of zero to five degrees.