The AV-741 is designed for use with DME/ Transponder sets. It is constructed from an aluminum casting which is capable of withstanding particle erosion to speeds of up to Mach 2. The antenna is produced to Military Specifications Mil-A-25708 & Mil-A-25708/1 and is qualified environmentally to Mil-Std-810. It has an operational temperature range of -55(C to 250(C (-67( to 482(F), can withstand a static load of 15psi perpendicular to the blade, and is operational to altitudes of 100,000 ft. The exterior is finished with a white polyurethane coating which is Skydrol resistant.