Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 2. Airplane Weight and Balance Control $20.00 2. Airplane Weight and Balance Control quantity $20.00 × 32. Weight and It's Effect on the Operation and Performance of Commercial Aircraft $20.00 32. Weight and It's Effect on the Operation and Performance of Commercial Aircraft quantity $20.00 × 25. The Effect of Overload and Unbalance on Long Range Operation $20.00 25. The Effect of Overload and Unbalance on Long Range Operation quantity $20.00 × 23. The Value of a Pound $20.00 23. The Value of a Pound quantity $20.00 × 30. The Effect of Center of Gravity on Performance $20.00 30. The Effect of Center of Gravity on Performance quantity $20.00 × 13. Will Accessories Impede Our Payload? $20.00 13. Will Accessories Impede Our Payload? quantity $20.00 × 34. Pneumatic Controls for Aircraft $20.00 34. Pneumatic Controls for Aircraft quantity $20.00 × 4. The Weight Engineer and the Flutter Problem $20.00 4. The Weight Engineer and the Flutter Problem quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $160.00 Tax $0.00 Total $160.00 Proceed to checkout