Towbars are approved for use on which aircraft types for engine running pushback?

• A. KC-10, DC-10, MD-11, L-1011
• B. KC-10, DC-10, MD-11, 767
• C. L-1011, 767, KC-10, DC-10
• D. All aircraft with towbar

Answer: (A)

Towbars used for engine running pushback must be explicitly approved for the aircraft’s nose gear and pushback procedure. The approved set includes KC-10, DC-10, MD-11, and L-1011 because these aircraft share a compatible nose gear design and towbar interface that the pushback system is certified to connect with while the engines are running. This compatibility ensures the tug’s forces are transmitted safely and the nose gear and engine nacelles are protected during a live-engined pushback. The Boeing 767 has a different nose gear/interface, so this towbar isn’t approved for engine running pushback on that aircraft. Always use equipment and procedures that carry explicit approval for the specific aircraft and operation.