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44-518: Hood Aerodrome ( IATA : MRO , ICAO : NZMS ) is an aerodrome, located in Masterton , New Zealand , it is located 1 NM South West of the town centre in the suburb of Solway . The aerodrome was named after George Hood , a pioneer Masterton aviator who died trying to make the first Trans-Tasman crossing in 1928. The aerodrome is used extensively for general aviation flights, and has also been used for commercial flights, Air New Zealand stopped serving

88-532: A different set of patterns for its own call signs. Call signs are allocated to ham radio stations in Barbados , Canada , Mexico and the United States . Many countries have specific conventions for classifying call signs by transmitter characteristics and location. The call sign format for radio and television call signs follows a number of conventions. All call signs begin with a prefix assigned by

132-587: A lack of demand. The airport is working on a plan to reinstate an air service to Auckland with an invitation to the airlines underway. Grass runway 06L/24R closed in November 2019 following an independent review of operations at the aerodrome. Work to widen the main runway and expand the apron is in the planning stage. The budget set for this project is $ 17 million. Air Chathams said in February 2024 that they are interested in serving Masterton to Auckland once

176-401: A new airline Air Wairarapa briefly flew to Auckland via Paraparumu in 2002. Between February 2009 and February 2014, Eagle Airways , a subsidiary of Air New Zealand Link flew to Auckland from Masterton. The flights were operated by 19-seat Beechcraft 1900 D aircraft. In September 2013, Air New Zealand announced the airline would withdraw all services to Masterton from 5 February 2014, due to

220-567: A new airport is built, replacing the old one, leaving the city's new "major" airport (or the only remaining airport) code to no longer correspond with the city's name. The original airport in Nashville, Tennessee, was built in 1936 as part of the Works Progress Administration and called Berry Field with the designation, BNA. A new facility known as Nashville International Airport was built in 1987 but still uses BNA. This

264-758: A purpose built dragstrip. IATA airport code The assignment of these codes is governed by IATA Resolution 763, and it is administered by the IATA's headquarters in Montreal , Canada. The codes are published semi-annually in the IATA Airline Coding Directory. IATA provides codes for airport handling entities, and for certain railway stations. Alphabetical lists of airports sorted by IATA code are available. A list of railway station codes , shared in agreements between airlines and rail lines such as Amtrak , SNCF , and Deutsche Bahn ,

308-516: A suffix according to the band in which they broadcast, these suffixes are: "-AM", "-OC" (shortwave or Onda Corta ), "-FM" and "-TDT" (Terrestrial Digital Television). The "-OL" ( longwave or Onda Larga ) and "-TV" suffixes are currently phased out as those bands are no longer used. Some FM and television stations have call signs beginning with "XE", usually reserved for AM radio stations. Most of these "XE" cases in FM and television stations were solicited by

352-509: Is GSN and its IATA code is SPN, and some coincide with IATA codes of non-U.S. airports. Canada's unusual codes—which bear little to no similarity with any conventional abbreviation to the city's name—such as YUL in Montréal , and YYZ in Toronto , originated from the two-letter codes used to identify weather reporting stations in the 1930s. The letters preceding the two-letter code follow

396-499: Is also XEZ-TV. Digital subchannels are not assigned a distinctive call sign; they keep the call sign of the station. The technical guidelines for digital television stations stipulate the use of PSIP short names matching the parent station (e.g. XHTDMX 2, XHTDMX3). Amateur radio stations in Mexico use "XE1" for the central region, "XE2" for the northern region, and "XE3" for the southern region. "XF" prefixes indicate islands. "XF4"

440-582: Is as follows: Cuba uses the prefixes CL – CM , CO , and T4 , with district numbers from 0 to 9 for amateur operations. The Dominican Republic uses the prefixes HI – HJ . All of the French possessions share the prefix F . Further divisions that are used by amateur stations are: Haiti has been assigned the call sign prefixes HH and 4V . The Kingdom of the Netherlands use the PA – PI prefixes, while

484-617: Is available. However, many railway administrations have their own list of codes for their stations, such as the list of Amtrak station codes . Airport codes arose out of the convenience that the practice brought pilots for location identification in the 1930s. Initially, pilots in the United States used the two-letter code from the National Weather Service (NWS) for identifying cities. This system became unmanageable for cities and towns without an NWS identifier, and

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528-523: Is different from the name in English, yet the airport code represents only the English name. Examples include: Due to scarcity of codes, some airports are given codes with letters not found in their names: The use of 'X' as a filler letter is a practice to create three-letter identifiers when more straightforward options were unavailable: Some airports in the United States retained their NWS ( National Weather Service ) codes and simply appended an X at

572-513: Is in conjunction to rules aimed to avoid confusion that seem to apply in the United States, which state that "the first and second letters or second and third letters of an identifier may not be duplicated with less than 200 nautical miles separation." Thus, Washington, D.C. area's three airports all have radically different codes: IAD for Washington–Dulles , DCA for Washington–Reagan (District of Columbia Airport), and BWI for Baltimore (Baltimore–Washington International, formerly BAL). Since HOU

616-543: Is not followed outside the United States: In addition, since three letter codes starting with Q are widely used in radio communication, cities whose name begins with "Q" also had to find alternate codes, as in the case of: IATA codes should not be confused with the FAA identifiers of U.S. airports. Most FAA identifiers agree with the corresponding IATA codes, but some do not, such as Saipan , whose FAA identifier

660-416: Is used for William P. Hobby Airport , the new Houston–Intercontinental became IAH. The code BKK was originally assigned to Bangkok–Don Mueang and was later transferred to Suvarnabhumi Airport , while the former adopted DMK. The code ISK was originally assigned to Gandhinagar Airport (Nashik's old airport) and later on transferred to Ozar Airport (Nashik's current airport). Shanghai–Hongqiao retained

704-559: Is usually used for the Revillagigedo Islands and nearby islets. Special call signs for contests or celebrations are occasionally issued, often in the 4A and 6D series, although these will follow the usual district numbering system (4A3 for the south, etc.). The earliest identification, used in the 1910s and into the early 1920s, was arbitrary. The U.S. government began requiring stations to use three-letter call signs around 1912, but they could be chosen at random. This system

748-571: The Canadian transcontinental railroads were built, each station was assigned its own two-letter Morse code : When the Canadian government established airports, it used the existing railway codes for them as well. If the airport had a weather station, authorities added a "Y" to the front of the code, meaning "Yes" to indicate it had a weather station or some other letter to indicate it did not. When international codes were created in cooperation with

792-637: The International Telecommunication Union (ITU). For example, the United States has been assigned the following prefixes: AAA – ALZ , K , N , W . For a complete list, see international call sign allocations . Pertaining to their status as former or current colonies, all of the British West Indies islands shared the VS , ZB – ZJ , and ZN – ZO prefixes. The current, largely post-independence, allocation list

836-585: The Netherlands Antilles use the PJ prefix. Aruba has been assigned P4 by the ITU . The island nation of Trinidad and Tobago use the 9Y – 9Z prefixes. Canadian broadcast stations are assigned a three-, four-, or five-letter base call sign (not including the "-FM", "-TV" or "-DT" suffix) beginning with CB , CF , CH , CI , CJ , CK , VF , or VO . The "CB" series calls are assigned to Chile by

880-455: The digital switchover . Television stations are required to identify every 30 minutes; there has been no equivalent requirement in radio since 2014. Television rebroadcasters are assigned the call signs of the station they are licensed to retransmit; for instance, XEZ-TDT , located on Cerro El Zamorano in Querétaro , has a repeater on Cerro Culiacán serving Celaya , Guanajuato , which

924-600: The ITU, but Canada makes de facto use of this series anyway for stations belonging to, but not exclusively broadcasting programs from, the Canadian Broadcasting Corporation (CBC). Several other prefixes, including CG , CY - CZ , VA - VE , VG , and the XJ - XO range, are available, but are not used in broadcasting. Conventional radio and television stations almost exclusively use "C" call signs; with

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968-730: The U.S. For example, several airports in Alaska have scheduled commercial service, such as Stebbins and Nanwalek , which use FAA codes instead of ICAO codes. Thus, neither system completely includes all airports with scheduled service. Some airports are identified in colloquial speech by their IATA code. Examples include LAX and JFK . Call signs in North America Call signs are frequently still used by North American broadcast stations , in addition to amateur radio and other international radio stations that continue to identify by call signs worldwide. Each country has

1012-486: The United States begin with either K or W , with "K" usually west of the Mississippi River and "W" usually east of it. Initial letters AA through AL , as well as N , are internationally allocated to the United States but are not used for broadcast stations. In the United States, broadcast stations have call signs of three to seven characters in length, including suffixes for certain types of service, but

1056-481: The United States, because "Y" was seldom used in the United States, Canada simply used the weather station codes for its airports, changing the "Y" to a "Z" if it conflicted with an airport code already in use. The result is that most major Canadian airport codes start with "Y" followed by two letters in the city's name (for example, YOW for O tta w a , YWG for W innipe g , YYC for C algar y , or YVR for V ancouve r ), whereas other Canadian airports append

1100-514: The aerodrome upgrades are complete. The aerodrome is the home of New Zealand's 'Sports and Vintage Aviation Society', which has had a hangar on site since 1978. Since 1999 Hood Aerodrome has held a biennial airshow , "Wings over Wairarapa". The eleventh such event took place on 26–27 February 2021, the final scheduled display on 28 February being cancelled due to a change in New Zealand's COVID-19 alert level . The aerodrome land also hosts

1144-539: The airport from 5 February 2014. Two new airlines have looked at re-instating a service to Auckland using larger aircraft but the runway will need to be lengthened to 1400m and widened to 30m first before it can start. The Masterton Aerodrome was opened in 1931. Historically, Hood Aerodrome has been served by South Pacific Airlines of New Zealand in 1962–1966 and two locally based carriers, Wairarapa Airlines which linked Masterton with Auckland, Hamilton, Rotorua, Nelson and Christchurch from August 1981 to January 1997. Then

1188-440: The airport itself instead of the city it serves, while another code is reserved which refers to the city itself which can be used to search for flights to any of its airports. For instance: Or using a code for the city in one of the major airports and then assigning another code to another airport: When different cities with the same name each have an airport, they need to be assigned different codes. Examples include: Sometimes,

1232-418: The airport's former name, such as Orlando International Airport 's MCO (for Mc C o y Air Force Base), or Chicago's O'Hare International Airport , which is coded ORD for its original name: Or char d Field. In rare cases, the code comes from the airport's unofficial name, such as Kahului Airport 's OGG (for local aviation pioneer Jimmy H ogg ). In large metropolitan areas, airport codes are often named after

1276-502: The code SHA, while the newer Shanghai–Pudong adopted PVG. The opposite was true for Berlin : the airport Berlin–Tegel used the code TXL, while its smaller counterpart Berlin–Schönefeld used SXF; the Berlin Brandenburg Airport has the airport code BER, which is also part of its branding. The airports of Hamburg (HAM) and Hannover (HAJ) are less than 100 nautical miles (190 km) apart and therefore share

1320-465: The concessionaires themselves so the stations would have the same call sign as an existing AM station (as it is the case of XEW-AM , XEW-TV and XEW-FM , all founded and owned by the Azcárraga family ), while others are for disambiguation (like XHTV-TV and XETV-TV or XEIMT-TV and XHIMT-TV ). All TV stations originally assigned with the "-TV" suffix, had been given the "-TDT" suffix as they made

1364-934: The end. Examples include: A lot of minor airfields without scheduled passenger traffic have ICAO codes but not IATA codes, since the four letter codes allow more number of codes, and IATA codes are mainly used for passenger services such as tickets, and ICAO codes by pilots. In the US, such airfields use FAA codes instead of ICAO. There are airports with scheduled service for which there are ICAO codes but not IATA codes, such as Nkhotakota Airport/Tangole Airport in Malawi or Chōfu Airport in Tokyo, Japan. There are also several minor airports in Russia (e.g., Omsukchan Airport ) which lack IATA codes and instead use internal Russian codes for booking. Flights to these airports cannot be booked through

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1408-500: The exception of a few commercial radio stations in St. John's, Newfoundland and Labrador which existed prior to the admission of Newfoundland as a province in 1949, the "V" calls are restricted to specialized uses such as amateur radio . Mexican broadcast stations are assigned call signs beginning with "XE" (for mediumwave and shortwave stations) or "XH" (for FM radio and television stations ), followed by one and up to five letters and

1452-557: The first three letters of the city in which it is located, for instance: The code may also be a combination of the letters in its name, such as: Sometimes the airport code reflects pronunciation, rather than spelling, namely: For many reasons, some airport codes do not fit the normal scheme described above. Some airports, for example, cross several municipalities or regions, and therefore, use codes derived from some of their letters, resulting in: Other airports—particularly those serving cities with multiple airports—have codes derived from

1496-478: The following format: Most large airports in Canada have codes that begin with the letter "Y", although not all "Y" codes are Canadian (for example, YUM for Yuma, Arizona , and YNT for Yantai , China), and not all Canadian airports start with the letter "Y" (for example, ZBF for Bathurst, New Brunswick ). Many Canadian airports have a code that starts with W, X or Z, but none of these are major airports. When

1540-597: The form of " YYZ ", a song by the rock band Rush , which utilizes the Morse code signal as a musical motif. Some airports have started using their IATA codes as brand names , such as Calgary International Airport (YYC) and Vancouver International Airport (YVR). Numerous New Zealand airports use codes that contain the letter Z, to distinguish them from similar airport names in other countries. Examples include HLZ for Hamilton , ZQN for Queenstown , and WSZ for Westport . Predominantly, airport codes are named after

1584-487: The international air booking systems or have international luggage transferred there, and thus, they are booked instead through the airline or a domestic booking system. Several heliports in Greenland have 3-letter codes used internally which might be IATA codes for airports in faraway countries. There are several airports with scheduled service that have not been assigned ICAO codes that do have IATA codes, especially in

1628-450: The minimum length for new stations is four characters, and seven-character call signs result only from rare combinations of suffixes. The rules governing call signs for stations in the United States are set out in the FCC rules, 47 C.F.R. chapter I. Specific rules for each particular service are set out in the part of the rules dealing with that service. A general overview of call sign formats

1672-612: The name of the airport itself, for instance: This is also true with some cities with a single airport (even if there is more than one airport in the metropolitan area of said city), such as BDL for Hartford, Connecticut 's B ra dl ey International Airport or Baltimore's BWI, for B altimore/ W ashington I nternational Airport ; however, the latter also serves Washington, D.C. , alongside Dulles International Airport (IAD, for I nternational A irport D ulles) and Ronald Reagan Washington National Airport (DCA, for D istrict of C olumbia A irport). The code also sometimes comes from

1716-416: The one they are located in: Other airport codes are of obscure origin, and each has its own peculiarities: In Asia, codes that do not correspond with their city's names include Niigata 's KIJ , Nanchang 's KHN and Pyongyang 's FNJ . EuroAirport Basel Mulhouse Freiburg , which serves three countries, has three airport codes: BSL, MLH, EAP. Some cities have a name in their respective language which

1760-506: The same first and middle letters, indicating that this rule might be followed only in Germany. Many cities retain historical names in their airport codes, even after having undergone an official name/spelling/transliteration change: Some airport codes are based on previous names associated with a present airport, often with a military heritage. These include: Some airports are named for an administrative division or nearby city, rather than

1804-500: The station code of Malton, Mississauga , where it is located). YUL is used for Montréal–Trudeau (UL was the ID code for the beacon in the city of Kirkland , now the location of Montréal–Trudeau). While these codes make it difficult for the public to associate them with a particular Canadian city, some codes have become popular in usage despite their cryptic nature, particularly at the largest airports. Toronto's code has entered pop culture in

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1848-515: The two-letter code of the radio beacons that were the closest to the actual airport, such as YQX in Gander or YXS in Prince George . Four of the ten provincial capital airports in Canada have ended up with codes beginning with YY, including: Canada's largest airport is YYZ for Toronto Pearson (as YTZ was already allocated to Billy Bishop Toronto City Airport , the airport was given

1892-529: The use of two letters allowed only a few hundred combinations; a three-letter system of airport codes was implemented. This system allowed for 17,576 permutations, assuming all letters can be used in conjunction with each other. Since the U.S. Navy reserved "N" codes, and to prevent confusion with Federal Communications Commission broadcast call signs , which begin with "W" or "K", the airports of certain U.S. cities whose name begins with one of these letters had to adopt "irregular" airport codes: This practice

1936-741: Was replaced by the basic form of the current system in the early 1920s. Examples of pre-1920 stations include 8XK in Pittsburgh , Pennsylvania , which became KDKA in November 1920, and Charles Herrold 's series of identifiers from 1909 in San Jose, California : first "This is the Herrold Station" or "San Jose calling", then the call signs FN, SJN, 6XF, and 6XE, then, with the advent of modern call signs, KQW in December 1921, and eventually KCBS from 1949 onward. All broadcast call signs in

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