MIL-T-26025 Tractor, Aircraft Towing, Diesel Engine Driven \(Ded\), 4X4, 4 Wheel Steer, 10,300 Pounds Drawbar Pull, Pneumatic Rubber Tired \(S/S By A-A-59210\)This document covers 4x4.4 wheel steer, pneumatic tired, diesel engine driven tractors intended for use as aircraft towing and spotting vehicles for aircraft weighing up to 175,000 pounds and trailers weighing up to 93,000 pounds.