Question: What is the four-letter code published in the International Civil Aviation Organization for Broumov Airport?
Context: The ICAO ( , ) airport code or location indicator is a four-letter code designating aerodromes around the world.  These codes are defined by the International Civil Aviation Organization, and published in ICAO Document 7910: "Location Indicators" are used by air traffic control and airline operations such as flight planning. The Civil Aviation Authority of Fiji (CAAF) is the national aviation authority in the Republic of Fiji and is responsible for discharging functions on behalf of the Government of Fiji under the States responsibility to the Convention on International Civil Aviation, also known as the Chicago Convention on International Civil Aviation Organization (ICAO).  CAAF regulates the activities of airport operators, air traffic control and air navigation service providers, airline operators, pilots and air traffic controllers, aircraft engineers, technicians, airports, airline contracting organisations and international air cargo operators in Fiji. Pakistan Civil Aviation Authority (Urdu: ‎ ) (abbreviated as CAA) is a regulatory authority, which oversees and regulates all aspects of civil aviation in Pakistan.  CAA's head office is situated in Terminal-1 of Jinnah International Airport in Karachi.  CAA is a member of the International Civil Aviation Organization.  Safety Investigation Board (SIB) conduct air safety investigations on direction of Federal Government.  Nearly all civilian airports in Pakistan are owned and operated by the CAA. Broumov Airport (ICAO airport code LKBR) is an airport in Broumov in the Czech Republic. Following is a list of destinations Viasa flew to as part of its scheduled destinations.  Each city is provided with the name of the country, the name of the airport served, and both its International Air Transport Association (IATA) three-letter designator (IATA airport code) and International Civil Aviation Organization (ICAO) four-letter designator (ICAO airport code).  Hubs and destinations served at the time of closure are also marked. Following is a list of destinations currently served by Austral Líneas Aéreas, as of 2013 .  Each destination is provided with the country name, the name of the airport served, and both its International Air Transport Association (IATA) three-letter designator (IATA airport code) and its International Civil Aviation Organization (ICAO) four-letter designator (ICAO airport code).  The list also includes the airports that serve either as a hub or as a focus city for the carrier.  Terminated destinations are additionally presented. United Nations Security Council resolution 1067, adopted on 26 July 1996, after noting various statements and resolutions by the President of the Security Council and International Civil Aviation Organization (ICAO) deploring the shooting down of two civilian aircraft by the Cuban Air Force on 24 February 1996, the Council called on Cuba to comply with international obligations relating to aviation, particularly the Convention on International Civil Aviation. Civil Aviation Authority, Bangladesh (CAAB) (Bengali: বেসামরিক বিমান চলাচল কর্তৃপক্ষ ) functions as the regulatory body for all aviation related activities in Bangladesh.  It is the national aviation authority operating under the Ministry of Civil Aviation & Tourism.  All nine operational airports (three international and six domestic) are operated by the CAAB.  A member of International Civil Aviation Organization, it has signed bilateral air transport agreement with 52 states.  It is headquartered in Kurmitola, Dhaka. British Airways is one of few carriers serving destinations across all six inhabited continents.  Following is a list of destinations the airline flies to, as of 2017 ; terminated destinations are also listed.  The list does not include cities served solely by affiliated regional carriers, and some terminated destinations may now be served either via franchise or through codeshare agreements with other carriers.  Each destination is provided with the name of the country served, the name of the airport served, and both the International Air Transport Association (IATA) three-letter designator (IATA airport code) and the International Civil Aviation Organization (ICAO) four-letter designator (ICAO airport code). The Somali Civil Aviation and Meteorology Authority (SCAMA) is the national civil aviation authority body of Somalia.  Based at the Aden Abdulle International Airport in the capital Mogadishu, it is under the aegis of the federal Ministry of Air and Land Transport.  In 2012, the ministry along with the Somali Civil Aviation Steering Committee set a three-year window for reconstruction of the national civil aviation capacity.  After a long period of management by the Civil Aviation Caretaker Authority for Somalia (CACAS), SCAMA in conjunction with the International Civil Aviation Organization also finalized a process in 2014 to transfer control of Somalia's airspace to the new Air Space Management Centre in the capital.
Answer: LKBR