Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 1681. The AH-64 Weight and Balance - A Technical History $20.00 1681. The AH-64 Weight and Balance - A Technical History quantity $20.00 × 1708. Mass Properties Reporting $20.00 1708. Mass Properties Reporting quantity $20.00 × 1154. Why Fly Supersonically? $20.00 1154. Why Fly Supersonically? quantity $20.00 × 1679. Higher Harmonic Control; Vibration Reduction for Reduced Weight $20.00 1679. Higher Harmonic Control; Vibration Reduction for Reduced Weight quantity $20.00 × 1155. Carry-on Baggage Review $20.00 1155. Carry-on Baggage Review quantity $20.00 × 1706. MASPROP - Computer Aided Mass Properties at Hughes Aircraft, Missile Systems Group $20.00 1706. MASPROP - Computer Aided Mass Properties at Hughes Aircraft, Missile Systems Group quantity $20.00 × 1124. Air Transportation Energy Efficiency - Alternatives and Implications $20.00 1124. Air Transportation Energy Efficiency - Alternatives and Implications 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