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27-554: Alalapadu Airstrip ( ICAO : SMDU ) is an airstrip serving Alalapadu in Suriname . Airlines flying charters to this airport are: This article about an airport in Suriname is a stub . You can help Misplaced Pages by expanding it . ICAO airport code The recommendations for ICAO airport codes were adopted on 24 March 1959, and came into force on 1 October the same year. ICAO codes are separate and different from IATA codes ,

54-718: A 360-degree turn immediately (turning to the ____). or Use your full call sign until further notice. or Work on a trailing aerial. or What is the D-Value at ____ ( place or position ) (at ____ hours) for the ____ millibar level? or The D-Value at ____ ( place or position ) at ____ hours for the ____ millibar level is ( D-Value figures and units ) ____ ( specify plus or minus ). or You are cleared subject to maintaining own separation and visual meteorological conditions. or IFR flight cancelled at ____ ( time ). or Have you reached your parking area? or I have reached my parking area. or Have you left

81-722: A storm") would be voice or computerised transmissions. But several remain part of the standard ICAO radiotelephony phraseology in aviation. These are also part of ACP131 , which lists all ITU-R Q-codes, without grouping them by aeronautical/marine/general use. or I am arranging my flight in order to arrive over ____ ( place ) at ____ hours. or Arrange your flight so as to reach flight level / altitude ____ at ____ ( hours or place ). or Has aircraft ____ landed at ____ ( place )? or (You may) land at ____ ( place ). or Aircraft ____ landed at ____ ( place ). or Am I near area ____ ( identification of area )? or Jettison fuel in ____ ( area ). or Maintain

108-457: A vertical distance of ____ ( figures and units ) above clouds, smoke, haze or fog levels. or Maintain a vertical distance of ____ ( figures and units ) below cloud. or Report reaching flight level/altitude ____ [ or ____ ( area or place )]. or Report leaving flight level/altitude ____ [ or ____ ( area or place )]. or I am changing my flight level/altitude from ____ to ____. or No delay expected. or I am making

135-512: Is QAT . Codes in the range QAA–QNZ are reserved for aeronautical use; QOA–QQZ for maritime use and QRA–QUZ for all services. "Q" has no official meaning, but it is sometimes assigned a word with mnemonic value, such as "question" or "query", for example in QFE: "query field elevation". The original Q-codes were created, circa 1909, by the British government as a "List of abbreviations ... prepared for

162-474: Is a pseudo-code, used in flight plans for aerodromes with no ICAO code assigned. ICAO codes are sometimes updated. Johannesburg Airport in Johannesburg , South Africa, for instance, was formerly known as Jan Smuts International Airport, with code FAJS. When the airport was renamed O. R. Tambo International Airport, its ICAO code was updated to FAOR. Some airports have two ICAO codes, usually when an airport

189-571: Is a standardised collection of three-letter codes that each start with the letter "Q". It is an operating signal initially developed for commercial radiotelegraph communication and later adopted by other radio services, especially amateur radio . To distinguish the use of a Q-code transmitted as a question from the same Q-code transmitted as a statement, operators either prefixed it with the military network question marker " INT " (   ▄ ▄ ▄▄▄ ▄ ▄▄▄  ) or suffixed it with

216-443: Is abc, what is yours?" Used in their formal question / answer sense, the meaning of a Q-code varies depending on whether the individual Q-code is sent as a question or an answer. For example, the message "QRP?" means "Shall I decrease transmitter power?", and a reply of "QRP" means "Yes, decrease your transmitter power", whereas an unprompted statement "QRP" means "Please decrease your transmitter power". This structured use of Q-codes

243-743: Is allocated to the International Telecommunication Union . QVA–QZZ are not allocated. Many codes have no immediate applicability outside one individual service, such as maritime operation (many QO or QU series codes) or radioteletype operation (the QJ series). Many military and other organisations that use Morse code have adopted additional codes, including the Z code used by most European and NATO countries. The Z code adds commands and questions adapted for military radio transmissions, for example, "ZBW 2", which means "change to backup frequency number 2", and "ZNB abc", which means "my checksum

270-532: Is fairly rare and now mainly limited to amateur radio and military Morse code (CW) traffic networks. First defined in ICAO publication "Doc 6100-COM/504/1" and in "ICAO Procedures for Air Navigation Services, Abbreviations and Codes (PANS-ABC)" [Doc8400-4] (4th edition 1989), the majority of the Q-codes have fallen out of common use; for example today reports such as QAU ("I am about to jettison fuel") and QAZ ("I am flying in

297-679: Is shared by civilian and military users. Frankfurt Airport in Frankfurt , Germany, for instance, has been assigned ICAO code EDDF while Rhein-Main Air Base was assigned ICAO code EDAF until its closure. Sion Airport in Switzerland has code LSGS while its military facilities have the ICAO code LSMS. Brussels Airport in Brussels , Belgium, has the ICAO code EBBR for its civilian facilities, and Melsbroek Air Base has been assigned ICAO code EBMB, even though

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324-624: Is used by the Miami-Dade County, Florida local government for law enforcement and fire rescue communications, one of the few instances where Q-codes are used in ground voice communication. The QAA–QNZ code range includes phrases applicable primarily to the aeronautical service, as defined by the International Civil Aviation Organization . The QOA–QQZ code range is reserved for the maritime service. The QRA–QUZ code range includes phrases applicable to all services and

351-599: The Jezero Crater on Mars is assigned the special ICAO code JZRO. Codes beginning with I (Ixx and Ixxx) are often used for navigational aids such as radio beacons, while the Q code is reserved for international radiocommunications and non-geographical special use. In Russia , Latin letter X, or its Morse / Baudot Cyrillic equivalent Ь , are used to designate government, military, and experimental aviation airfields in internal airfield codes similar in structure and purpose to ICAO codes but not used internationally. ZZZZ

378-572: The 1970s, the Post Office Handbook for Radio Operators listed over a hundred Q-codes, covering a wide range of subjects including radio procedures, meteorology, radio direction finding, and search and rescue. Some Q-codes are also used in aviation , in particular QNE, QNH and QFE, referring to certain altimeter settings . These codes are used in radiotelephone conversations with air traffic control as unambiguous shorthand, where safety and efficiency are of vital importance. A subset of Q-codes

405-535: The ICAO code indicate the country; the remaining letters identify the airport. ICAO codes are used partly for geographical context. For example, the ICAO code for Heathrow International Airport in London, is EGLL, with its first letters reflecting that it is based in the United Kingdom . On the other hand, IATA codes do not provide geographic reference. For example, LHR, representing Heathrow, does not enable one to deduce

432-525: The United Kingdom, but nearby civilian Port Stanley Airport is assigned SFAL, consistent with South America . Saint Pierre and Miquelon is controlled by France, and airports there are assigned LFxx as though they were in Europe. Kosovo is assigned the code BKxx grouping it with Greenland and Iceland rather than its geographical neighbors which have Lxxx (described below). Jerusalem International Airport

459-414: The city it serves, while ICAO codes are distributed by region and country. Far more aerodromes (in the broad sense) have ICAO codes than IATA codes, which are sometimes assigned to railway stations as well. The selection of ICAO codes is partly delegated to authorities in each country, while IATA codes, which have no geographic structure, must be decided centrally by IATA. The first one or two letters of

486-458: The latter of which have three letters and are generally used for airline timetables , reservations, and baggage tags. For example, the IATA code for London 's Heathrow Airport is LHR and its ICAO code is EGLL. IATA codes are commonly seen by passengers and the general public on flight-tracking services such as FlightAware . In general IATA codes are usually derived from the name of the airport or

513-584: The location of the airport LHV with any greater certainty; it is William T. Piper Memorial Airport in Lock Haven, Pennsylvania in the United States . There are a few exceptions to the regional structure of the ICAO code that have been historically for political or administrative reasons. RAF Mount Pleasant air base in the Falkland Islands , for instance, is assigned the ICAO code EGYP as though it were in

540-420: The parking area? or I have left the parking area. or Have you moved to the holding position for runway number ____ ? or I have moved to the holding position for runway number ____. or Have you assumed position for take-off? or I am assuming take-off position for runway number ____ and am holding. or Have you cleared the runway ( or landing area)? or I have cleared

567-400: The runway ( or landing area). or Please light the aerodrome lights. 1. Maintain ( or fly at) flight level / altitude ____. 2. I am maintaining flight level / altitude ____ 3. I intend cruising at flight level/altitude ____. or Please light the approach and runway lights. or Please have the ____ radio facility at ____ ( place ) put in operation. or Please switch on

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594-446: The standard Morse question mark UD (   ▄ ▄ ▄▄▄ ▄▄▄ ▄ ▄  ). Although Q-codes were created when radio used Morse code exclusively, they continued to be employed after the introduction of voice transmissions. To avoid confusion, transmitter call signs are restricted; countries can be issued unused Q-Codes as their ITU prefix e.g. Qatar

621-520: The style LFddnn , where dd indicates the department while nn is a sequential counter. The French Federation of Ultralight Motorized Gliders was formally named the keeper of these codes. Aerodrome de Torreilles in France, for instance, has code LF6651. In Antarctica many aerodromes have pseudo ICAO-codes with AT and two digits, while others have proper codes from countries performing air control such as NZ for New Zealand . Q code The Q-code

648-515: The two airports share runways and ground and air control facilities. In small countries like Belgium or the Netherlands, almost all aerodromes have an ICAO code. For larger countries like the UK or Germany this is not feasible, given the limited number of letter codes. Some countries have addressed this issue by introducing a scheme of sub-ICAO aerodrome codes; France, for example, assigns pseudo ICAO codes in

675-742: The use of British ships and coast stations licensed by the Postmaster General ". The Q-codes facilitated communication between maritime radio operators speaking different languages, so they were soon adopted internationally. A total of forty-five Q-codes appeared in the "List of Abbreviations to be used in Radio Communications", which was included in the Service Regulations affixed to the Second International Radiotelegraph Convention in London (The Convention

702-691: Was assigned both LLJR (its Israeli persona) as well as OJJR (its Jordanian persona), but the airport itself fell into disuse. In the contiguous United States and Canada, many airports have ICAO codes that are simply copies of their three-letter IATA codes, with the geographical prefix added on (e.g., YEG and CYEG both refer to Edmonton International Airport , while IAD and KIAD both refer to Washington Dulles International Airport ). This similarity does not extend to Alaska (PAxx), Hawaii (PHxx), or U.S. territories. Kahului Airport on Maui , for instance, has an IATA code of OGG and an ICAO code of PHOG. ICAO airport codes do not begin with I or J or X or Q, though

729-472: Was signed on July 5, 1912, and became effective July 1, 1913.) The following table reviews a sample of the all-services Q-codes adopted by the 1912 convention: Over the years the original Q-codes were modified to reflect changes in radio practice. For example, QSW / QSX originally stood for, "Shall I increase / decrease my spark frequency?", but in the 1920s spark-gap transmitters were gradually being banned from land stations, making that meaning obsolete. By

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