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Giant Killer (call sign)

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GIANT KILLER is a military Air Traffic Control (ATC) Call Sign used within certain regions of the contiguous United States (CONUS). The call sign is given to a controller responsible for flight operations within restricted military airspace reserved for combat training exersizes. The call sign is commonly published in NOTAMs that designate restricted airspace reserved for military flight operations or combat exercises where normal airspace separation rules do not apply [1]. Previous to the use of the call sign, no standardized identification method existed for civilian or military aircraft to communicate to the managing controller. [2]

To reduce the confusion and to ensure standardized emergency communication procedures among the various branches of the U.S. military, the call sign GIANT KILLER is used to denote the controlling authority for a specific portion of military airspace dedicated to combat training. In rare circumstances, the call sign may be used during a national emergency when a specific controller has been assigned a section of airspace. This was the case on September 11th, 2001 when US Navy personnel utilized the call sign to vector F-15s from Langley AFB to the National Capital Region (United States) for air defense purposes. While unusual, it is possible for a specific controller to utilize more than one call sign, with the GIANT KILLER name being one of them. This is usually reserved for scenarios where a senior controller is responsible for complex combat exercises or where a national emergency exists. For clarity, the name is always written in capital letters with a space between the words.

Origins

The U.S. Military commonly uses pairs of words that do not sound phonetically similar for radio communications. This reduces the chance for confusion during transmission of critical messages. Most military ATC facilities that use the GIANT KILLER call sign maintain direct communications to weapons capable flight squadrons; the "killer" portion of the call sign may be more than a coincidence.

Safety Considerations for General Aviation

A significant safety concern for military combat exercise planners is the possibility of a General Aviation aircraft mistakenly entering restricted airspace while an active exercise is taking place. Added safety measures are taken when Target Drones are used during War Games. During such times, it is not uncommon for the military to release a specific safety NOTAM via the FAA. Such NOTAMs usually indicate that any aircraft in the vicinity of restricted airspace should contact GIANT KILLER on a specified frequency. This reduces the possibility that a safety mishap could occur.


  1. ^ MARSA
  2. ^ http://www.co.dare.nc.us/Airport/masterplans/Sec2.pdf Example Civilian Airport Master Plan showing the use of the Call Sign