The AT-256A/ARC is used for airborne communications on various fixed-wing aircraft and helicopters. The antenna is manufactured to Military Specifications MIL-A-5815 & MIL-A-5815/1. It is designed to operate at the extreme temperature range of -54°C to 125°C (-65° to 257°F) with intermittent operation at 150°°C (302°F) and can withstand a static load of 55 MPA (8psi) perpendicular to the blade, with an ultimate of 83 MPA (12psi). The antenna is protected by an anodic coating to prevent corrosion. The antenna's sealability is tested to 21,340m (70,000') altitude.