State and/or Experimental Aviation Point Location Index () is a four-letter unique identifier assigned to the location of
Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
's state aviation points (
air base
An airbase (stylised air base in American English), sometimes referred to as a military airbase, military airfield, military airport, air station, naval air station, air force station, or air force base, is an aerodrome or airport used as a mi ...
s, commandant's offices of airfields and airports, points of deployment of aviation units at
joint-use airports, aviation control points, aviation training grounds and sports airfields), as well as
experimental aviation points (experimental airfields,
aviation factories).
These indices are used to transmit aeronautical information about state airfields, airspace use requests, designation of military and sports airfields on air navigation maps. Indices are assigned by the
Ministry of Defense and are not
ICAO airport code
The ICAO airport code or location indicator is a four-letter code designating aerodromes around the world. These codes, as defined by the International Civil Aviation Organization and published quarterly in ICAO Document 7910: ''Location Indic ...
s, although they use a similar format. If a state airfield has an ICAO index, a joint use by civil aviation is permitted.
Indices of state airfields are intended only for internal use within Russia. They have an external resemblance to ICAO codes for the location of Russian airports, but unlike them, they begin with the letter "Ь" when using
Cyrillics or with the letter "X" when using
Latin alphabet
The Latin alphabet, also known as the Roman alphabet, is the collection of letters originally used by the Ancient Rome, ancient Romans to write the Latin language. Largely unaltered except several letters splitting—i.e. from , and from � ...
(letter "X" is not used as ICAO prefix and ICAO codes for Russia start with letter "U"). Indices cannot be used outside Russia via
AFTN
The Aeronautical Fixed Telecommunications Network (AFTN) is a worldwide system of aeronautical fixed circuits provided, as part of the Aeronautical Fixed Service, for the exchange of messages and/or digital data between aeronautical fixed stations ...
.
See also
*
Location identifier
A location identifier is a symbolic representation for the name and the location of an airport, navigation aid, or weather station, and is used for staffed air traffic control facilities in air traffic control, telecommunications, computer program ...
*
ICAO airport code
The ICAO airport code or location indicator is a four-letter code designating aerodromes around the world. These codes, as defined by the International Civil Aviation Organization and published quarterly in ICAO Document 7910: ''Location Indic ...
*
List of airports by ICAO code: U
Sources
{{cite web, url=http://www.caiga.ru/DocAni/manual_of_4_letter_indexes/, title=Сборник четырехбуквенных указателей (индексов) местоположения аэродромов, полигонов и посадочных площадок, publisher=Центр аэронавигационной информации, date=2024-04-18
Aircraft operations
Geocodes
Location codes
Navigational aids