The Federal Aviation Administration and the International Civil Aviation Organization (ICAO) have adopted a digital code for automatic pressure-altitude transmission via the Air Traffic Control Radar Beacon System (ATCRBS). Salient features of the code are: (1) One-hundred foot digitizing increments; (2) range from -1000 feet to +126,750 feet; (3) unambiguous unit-distance characteristic; and, (4) altitude transmission with respect to a fixed datum of 1013.2 millibars (29.92 inches of mercury). This report is directed to aviation maintenance personnel to provide them with code tables which are needed for maintenance of airborne altitude reporting equipment. The code is tabulated for altitude increments in increasing numeric order and for the equivalent octal Mode 3/A identity reply in increasing numeric order. (Author)


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    Title :

    Air Traffic Control Radar Beacon System (Atcrbs) Mode 3/a Identity Reply and Equivalent Mode C Altitude Code


    Contributors:
    K. Wise (author)

    Publication date :

    1968


    Size :

    18 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English