Grant County International Airport

Grant County International Airport (IATA: MWH, ICAO: KMWH, FAA LID: MWH) is a public use airport located six miles (10 km) northwest of the central business district of Moses Lake in Grant County, Washington, United States. Formerly a military facility, the airport is owned by the Port of Moses Lake, and its 13,500-foot (4,110 m) runway is the 17th longest in the U.S. According to Federal Aviation Administration records, the airport had 1,369 passenger boardings (enplanements) in calendar year 2008, 2,920 enplanements in 2009, and 1,442 in 2010. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation airport. History Opened as a training airfield during World War II, the facility was operated by the U.S. Air Force as Larson Air Force Base until 1966. On 24 June 1969, Japan Airlines Flight 90, a Convair 880, crashed on take-off from runway 32R at Grant County International Airport. The power was reduced on the number four engine during take-off, and the aircraft continued to yaw to the right until the number four engine struck and slid off the runway. It burst into flames, killing three of the five crew members on board. The probable cause was a "delayed corrective action during a simulated critical-engine-out takeoff maneuver resulting in an excessive sideslip from which full recovery could not be effected." In September 2019, Boeing stored 100 of its undelivered 737 MAX airplanes at the Moses Lake airport while it awaited clearance from the FAA and other aviation regulators to return the jet to commercial service. Passenger air service to and from Moses Lake ended on 8 June 2010. Overview With 4,650 acres (7.3 sq mi; 18.8 km2) and a 13,500-foot (4,110 m) main runway, it is one of the largest airports in the United States. Moses Lake is famous for good flying weather, as it is located on the east side of the Cascade Range, in the semi-arid desert of central Washington. Grant County International Airport was an alternate landing site for the NASA Space Shuttle. Scheduled passenger flights on Big Sky Airlines to Boise and Portland were discontinued on September 1, 2006. The service was subsidized by the Essential Air Service program. United Express, operated by SkyWest Airlines offered nonstop flights to Seattle from June 2009 until June 2010. The airport currently has no commercial passenger air service. The airport was used for heavy jet training by Japan Airlines (JAL) for over forty years, until the closing of their training offices in March 2009. The airport also had been used for flight testing of the Mitsubishi SpaceJet. In November 1974, the airport hosted a new Supersonic Transport (SST) Concorde for a month during FAA certification testing. It is also utilized by the U.S. Air Force and Boeing as a testing facility. Most of the traffic at the airport is general and military aviation. In 2011, the 92nd Air Refueling Wing at Fairchild AFB in Spokane temporarily moved its KC-135 R/T fleet and operations to Moses Lake while Fairchild's runway underwent reconstruction and other infrastructure improvements, to include an upgrade to the base's aviation fuel distribution system. The main campus for Big Bend Community College is also located on the grounds of the airport. After the grounding of all Boeing 737 MAXs from March 2019, approximately 50 of the grounded airplanes were parked at the airport. This was originally seen as an economic opportunity for the airport, but later caused concern as the number of planes stored kept increasing, to approximately 130 by October 2019. Facilities and aircraft Grant Co. International Airport covers an area of 4,650 acres (1,880 ha) at an elevation of 1,189 feet (362 m) above sea level. It has five runways: Runway 14L/32R is 13,503 by 200 feet (4,116 by 61 m), with an asphalt/concrete surface Runway 4/22 is 10,000 by 100 feet (3,048 by 30 m), with an asphalt/concrete surface Runway 9/27 is 3,500 by 90 feet (1,067 by 27 m), with a concrete surface Runway 18/36 is 3,327 by 75 feet (1,014 by 23 m), with an asphalt surface Runway 14R/32L is 2,936 by 75 feet (895 by 23 m), with a concrete surface For the 12-month period ending December 31, 2018, the airport had 77,335 aircraft operations, an average of 212 per day: 61% general aviation, 15% military, 10% air carrier and 14% air taxi. At that time there were 49 fixed-wing aircraft and 2 gliders based at this airport: 84% single-engine, 12% multi-engine, and 4% glider. Cargo carriers See also Washington World War II Army Airfields List of airports in Washington List of longest runways References Other sources External links Grant County International Airport Archived February 18, 2013, at the Wayback Machine at Port of Moses Lake website Grant County International Airport at WSDOT Aviation Aerial image as of July 1996 from USGS The National Map FAA Airport Diagram (PDF), effective July 9, 2026 FAA Terminal Procedures for MWH, effective July 9, 2026 Resources for this airport: AirNav airport information for KMWH ASN accident history for MWH FlightAware airport information and live flight tracker NOAA/NWS weather observations: current, past three days SkyVector aeronautical chart for KMWH FAA current MWH delay information Larson Air Force Base – Grant County International Airport at HistoryLink