Cart Shopping Cart My Store Account Orders Downloads Shopping Cart “7. Predetermination of Weight Efficiency” has been added to your cart. Continue Shopping “12. Weight Control – Aircraft Design Problem” has been added to your cart. Continue Shopping “2. Airplane Weight and Balance Control” has been added to your cart. Continue Shopping “4. The Weight Engineer and the Flutter Problem” has been added to your cart. Continue Shopping Remove item Thumbnail image Product Price Quantity Subtotal × 3. Aircraft Accessories - A Weighty Problem $20.00 3. Aircraft Accessories - A Weighty Problem quantity $20.00 × 7. Predetermination of Weight Efficiency $20.00 7. Predetermination of Weight Efficiency quantity $20.00 × 12. Weight Control - Aircraft Design Problem $20.00 12. Weight Control - Aircraft Design Problem quantity $20.00 × 2. Airplane Weight and Balance Control $20.00 2. Airplane Weight and Balance Control 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 $100.00 Tax $0.00 Total $100.00 Proceed to checkout