Click to expand Tap to zoom Bendix TPR-640 ATC Transponder 1971 Maintenance (2640A) by Bendix Avionics Sale $45.00 | / SKU 670:R Printed Manual - $45.00 Download - $45.00 Printed Manual Download Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Includes 641 A & B