This SAE Aerospace Standard (AS) covers medium-pressure, high-temperature, flexible, metal-hose assemblies suitable for operation in pneumatic systems up to 800 ¿¿F with excursion to 1200 ¿¿F for Class ¿¿¿B¿¿¿ and ¿¿¿N¿¿¿ and primarily for use on jet aircraft power plants.