Accession Number : AD0666559

Title :   AIR TRAFFIC CONTROL RADAR BEACON SYSTEM (ATCRBS) MODE 3/A IDENTITY REPLY AND EQUIVALENT MODE C ALTITUDE CODE.

Descriptive Note : Technical rept.,

Corporate Author : FEDERAL AVIATION ADMINISTRATION WASHINGTON D C SYSTEMS RESEARCH AND DEVELOPMENT SERVICE

Personal Author(s) : Wise,Kenneth

Report Date : FEB 1968

Pagination or Media Count : 20

Abstract : 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)

Descriptors :   (*AIR TRAFFIC CONTROL SYSTEMS, *RADAR BEACONS), CODING, ALTITUDE, TRANSPONDERS, TABLES(DATA), MAINTENANCE, AIRBORNE, RADAR EQUIPMENT, DIGITAL SYSTEMS, IDENTIFICATION SYSTEMS, EFFICIENCY

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE