Accession Number : ADD003685

Title :   RAPCON-Control Tower Coordination System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : White,James K

Report Date : 01 Feb 1977

Pagination or Media Count : 18

Abstract : A visual communication system using color coded lights through which the RAPCON facility at an airport keeps the control tower informed as to the status of aircraft under its control. Three approach zones based on distance from the runway are defined by the colors white, amber, and green, green being closest to the runway. Keyboards are provided at the RAPCON and the control tower, each having three illuminated primary white, amber, and green keys and three illuminated secondary white, amber, and green keys, the primary keys representing the lead aircraft in their zones and the secondary keys representing a second aricraft, if any, in the zone. Upon entry of an aircraft into a zone, the RAPCON operator actuates a primary or secondary key for that zone, as appropriate, causing flashing illumination of the key. The control tower acknowledges by momentarily depressing the flashing key, which steadies its illumination.

Descriptors :   *Patents, *Airport control towers, *Air traffic control systems, *Indicator lights, *Visual signals, Airport radar systems, Colors, Coding, Approach

Subject Categories : Air Navigation and Guidance
      Active & Passive Radar Detection & Equipment
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE