Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 20. Wing Weight Estimating Simplified $20.00 20. Wing Weight Estimating Simplified quantity $20.00 × 12. Weight Control - Aircraft Design Problem $20.00 12. Weight Control - Aircraft Design Problem quantity $20.00 × 35. A Graphical Method of Preparing Tabular Schedules for Balance Control in Loading Passenger Transport Aircraft $20.00 35. A Graphical Method of Preparing Tabular Schedules for Balance Control in Loading Passenger Transport Aircraft quantity $20.00 × 7. Predetermination of Weight Efficiency $20.00 7. Predetermination of Weight Efficiency 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 × 3. Aircraft Accessories - A Weighty Problem $20.00 3. Aircraft Accessories - A Weighty Problem quantity $20.00 × 9. Aircraft Balancing and Center of Gravity Control $20.00 9. Aircraft Balancing and Center of Gravity Control quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $140.00 Tax $0.00 Total $140.00 Proceed to checkout