Cart Shopping Cart My Store Account Orders Downloads Shopping Cart “27. The Significance of Weight Control” has been added to your cart. Continue Shopping Remove item Thumbnail image Product Price Quantity Subtotal × 10. Calculation of Landing Gear and Hydraulic System Weights $20.00 10. Calculation of Landing Gear and Hydraulic System Weights 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 × 2. Airplane Weight and Balance Control $20.00 2. Airplane Weight and Balance Control quantity $20.00 × 1. Weight Economy $20.00 1. Weight Economy quantity $20.00 × 27. The Significance of Weight Control $20.00 27. The Significance of Weight Control quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $100.00 Tax $0.00 Total $100.00 Proceed to checkout