"All automatic altitude reporting digitizer equipment manufactured under this standard shall comply with the requirements as specified up to its maximum range as indicated on the equipment nameplate. The digitized altitude output shall be in accordance with ""U.S. National Standard for Common System Component Characteristics for the IFF Mark X (SIF)/Air Traffic Control Radar Beacon System SIF/ATCRBS and the International (ICAO) Standard Code for SSR Pressure Altitude Transmission."" "
SAE AS855-1996 history
2008SAE AS855-2008 Minimum Performance Standard for Automatic Pressure Altitude Digitizer Equipment
1996SAE AS855-1996 Minimum Performance Standard for Automatic Pressure Altitude Digitizer Equipment
1986SAE AS855-7-1986 AS855 Rear Ball Race Spigot - Control Column
1969SAE AS855-1969 Minimum Performance Standard for Automatic Pressure Altitude Digitizer Equipment (Reaffirmed Noncurrent July 2001)