431st Test and Evaluation Squadron
Encyclopedia
The 431st Test and Evaluation Squadron is an inactive United States Air Force
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

 unit. Its last assignment was with the Tactical Air Command
Tactical Air Command
Tactical Air Command is an inactive United States Air Force organization. It was a Major Command of the United States Air Force, established on 21 March 1946 being headquartered at Langley Air Force Base, Virginia...

 57th Fighter Wing
57th Wing
The 57th Wing is an operational unit of the United States Air Force Warfare Center, stationed at Nellis Air Force Base, Nevada.The 57 WG's mission is to provide well trained and well equipped combat forces ready to deploy into a combat arena to conduct integrated combat operations.-Mission:The 57...

 stationed at Nellis AFB, Nevada
Nevada
Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

. It was inactivated on 30 June 1992.

World War II

Established by Fifth Air Force
Fifth Air Force
The Fifth Air Force is a numbered air force of the United States Air Force Pacific Air Forces . It is headquartered at Yokota Air Base, Japan....

 in Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 in May 1943 specifically to accommodate very long range Lockheed P-38J Lightnings at Amberley Airfield in Queensland, Australia. The 431st was specifically trained to provide long-range escort for bombers during daylight raids on Japanese airfields and strongholds in the Netherlands East Indies and the Bismarck Archipelago
Bismarck Archipelago
The Bismarck Archipelago is a group of islands off the northeastern coast of New Guinea in the western Pacific Ocean and is part of the Islands Region of Papua New Guinea.-History:...

. On 14 August 1943, the 431st transferred from Amberley airfield to Port Moresby
Port Moresby
Port Moresby , or Pot Mosbi in Tok Pisin, is the capital and largest city of Papua New Guinea . It is located on the shores of the Gulf of Papua, on the southeastern coast of the island of New Guinea, which made it a prime objective for conquest by the Imperial Japanese forces during 1942–43...

. New Guinea.

Engaged in combat operations, providing escort for B-25 Mitchell
B-25 Mitchell
The North American B-25 Mitchell was an American twin-engined medium bomber manufactured by North American Aviation. It was used by many Allied air forces, in every theater of World War II, as well as many other air forces after the war ended, and saw service across four decades.The B-25 was named...

 medium bombers that were engaged in strafing attacks on airdromes at Wewak
Wewak
Wewak is the capital of the East Sepik province of Papua New Guinea. It is located on the northern coast of the island of New Guinea. It is the largest town between Madang and Jayapura. It is the see city of the Roman Catholic Diocese of Wewak....

 but also destroyed a number of the enemy fighter planes that attacked the formation. Also intercepted and destroyed many Japanese aircraft which were sent against American shipping in Oro Bay
Oro Bay
Oro Bay is a bay in Oro Province, Papua New Guinea, located southeast of Buna. The bay is located within the larger Dyke Ackland Bay. A port is operated by PNG Ports Corporation Limited with limited wharf facilities.-History:...

 on 15 and 17 October 1943. Covered landings in New Guinea
New Guinea
New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

, New Britain
New Britain
New Britain, or Niu Briten, is the largest island in the Bismarck Archipelago of Papua New Guinea. It is separated from the island of New Guinea by the Dampier and Vitiaz Straits and from New Ireland by St. George's Channel...

, and the Schouten Islands
Schouten Islands
The Indonesian Schouten Islands are an island group of Papua province, eastern Indonesia in the Cenderawasih Bay 50 km off the north-western coast of the island of New Guinea...

. After moving to Biak in July 1944, the squadron flew escort missions and fighter sweeps to the southern Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

, Celebes
Sulawesi
Sulawesi is one of the four larger Sunda Islands of Indonesia and is situated between Borneo and the Maluku Islands. In Indonesia, only Sumatra, Borneo, and Papua are larger in territory, and only Java and Sumatra have larger Indonesian populations.- Etymology :The Portuguese were the first to...

, Halmahera
Halmahera
Halmahera is the largest island in the Maluku Islands. It is part of the North Maluku province of Indonesia.Halmahera has a land area of 17,780 km² and a population in 1995 of 162,728...

, and Borneo
Borneo
Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

.

Moved to the Philippines in October 1944 and attacked enemy airfields and installations, escorting bombers, and engaging in aerial combat during the first stages of the Allied campaign to recover the Philippines, October–December 1944. The squadron flew many missions to support ground forces on Luzon
Luzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

 during the first part of 1945. Also flew escort missions to Southeast China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 and attacked railways on Formosa
Formosa
Formosa or Ilha Formosa is a Portuguese historical name for Taiwan , literally meaning, "Beautiful Island". The term may also refer to:-Places:* Formosa Strait, another name for the Taiwan Strait...

. Began moving to Ie Shima near Okinawa in August 1945 but the war ended before the movement was completed.

After active combat ended, on 22 September 1945, the squadron moved to Seoul Airfield, Korea
Korea
Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

 for occupation duty as part of the 308th Bomb Wing, assigned to the 315th Air Division of Far East Air Forces. The unit moved to Kimpo Airfield, on 7 January 1946 where the it converted to the very long-range P-51H Mustang. The squadron was reassigned to Nagoya Airfield, Japan in March 1947 and later moved to Itazuke Airfield, Japan in August 1948. It became a subordinate unit of 475th Fighter Wing on 10 August.

The squadron was inactivated on 1 April 1949 at Ashiya Airfield, Japan

Cold War

Reactivated as part of Air Defense Command in November 1952, replacing the federalized 172d Fighter-Interceptor Squadron of the Michigan Air National Guard
Michigan Air National Guard
The Michigan Air National Guard is the air force militia of the U.S. state of Michigan. It is, along with the Michigan Army National Guard, an element of the Michigan National Guard...

. Assigned to Selfridge AFB, Michigan with mission of air defense of the Detroit/Akron
Akron
-Settlements:Canada* Akron, OntarioSouth Africa* Akron, South AfricaUnited States* Akron, Alabama* Akron, Colorado* Akron, Indiana* Akron, Iowa* Akron, Michigan* Akron, New York* Akron, Pennsylvania* Akron, West Virginia* Akron Township, Illinois...

 area and Great Lakes
Great Lakes
The Great Lakes are a collection of freshwater lakes located in northeastern North America, on the Canada – United States border. Consisting of Lakes Superior, Michigan, Huron, Erie, and Ontario, they form the largest group of freshwater lakes on Earth by total surface, coming in second by volume...

 initially flying the F-86F Sabres reassigned from the 63d Fighter-Interceptor Squadron at Oscoda AFB, Michigan.

Relieved from duty with ADC and reassigned to USAFE under Seventeenth Air Force
Seventeenth Air Force
Seventeenth Air Force is a numbered air force of the United States Air Force located at Ramstein Air Base, Germany. The command served the United States Air Forces in Europe during its years of active service...

. Flying from Wheelus AB, Libya to provide air defense over the large North African base and expansive training ranges. Replaced its Korean War vintage F-86F's with new F-86D Sabre Interceptors in January 1955. Moved to Zaragoza AB, Spain in September 1958 and was reassigned to the Strategic Air Command
Strategic Air Command
The Strategic Air Command was both a Major Command of the United States Air Force and a "specified command" of the United States Department of Defense. SAC was the operational establishment in charge of America's land-based strategic bomber aircraft and land-based intercontinental ballistic...

 Sixteenth Air Force
Sixteenth Air Force
The 16th Air Expeditionary Task Force is a provisional United States Air Force unit assigned to the United States Air Forces in Europe...

. Inactivated in 1964 with withdrawal of B-47 Stratojet
B-47 Stratojet
The Boeing Model 450 B-47 Stratojet was a long-range, six-engined, jet-powered medium bomber built to fly at high subsonic speeds and at high altitudes. It was primarily designed to drop nuclear bombs on the Soviet Union...

 from inventory and SAC turning jurisdiction of its Spanish refueling bases to USAFE.

Was reassigned to Tactical Air Command
Tactical Air Command
Tactical Air Command is an inactive United States Air Force organization. It was a Major Command of the United States Air Force, established on 21 March 1946 being headquartered at Langley Air Force Base, Virginia...

, being stationed at George AFB, California, assigned to 8th Tactical Fighter Wing. Equipped with F-4C Phantom II tactical fighter-bomber, engaged in training, participated in numerous exercises, operational readiness inspections, deployments. Re-equipped with new F-4D Phantom II in 1965 and reassigned to 479th Tactical Training Wing
479th Tactical Training Wing
The 479th Tactical Training Wing is an inactive United States Air Force unit. Its last assignment was with Tactical Training, Holloman, stationed at Holloman Air Force Base, New Mexico...

 at George AFB. The F-4D was an improved version of the F-4C, which the 8th TFW had been deployed with to Southeast Asia.

In February 1966, the squadron began F-4D replacement pilot training for personnel to be deployed to Southeast Asia
Southeast Asia
Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic...

. Along with the USAF fighter pilot training, the squadron began training foreign personnel in F-4 operations and maintenance in March 1969. Pilots were trained from Israel
Israel
The State of Israel is a parliamentary republic located in the Middle East, along the eastern shore of the Mediterranean Sea...

, Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

, and West Germany
West Germany
West Germany is the common English, but not official, name for the Federal Republic of Germany or FRG in the period between its creation in May 1949 to German reunification on 3 October 1990....

. Inactivated on 30 October 1970 due to budget reductions.

Reactivated at George AFB in 1975 as part of the 35th Tactical Fighter Squadron. Engaged in F-4E "Wild Weasel" training as a Tactical Fighter Training Squadron against F-105G Thunderchiefs. Inactivated due to budget cuts in 1978.

Fighter Weapons Squadron

Reactivated at McClellan AFB, California in 1980 as an F-111 Aardvark evaluation squadron, assuming mission of Detachment 3, 57th Fighter Weapons Wing, home stationed at Nellis AFB, Nevada, being a Geographically Separated Unit (GSU) of the 57th FWW. McClellan AFB was the Air Force Logistics Command
Air Force Logistics Command
Air Force Logistics Command was a United States Air Force command. Its headquarters was located at Wright-Patterson Air Force Base, Ohio...

 prime support depot for the F-111 and changes and modifications could be made there and tested by the detachment.

The 431st's mission was to test and evaluate TCTO (Time Change Technical Order) modifications to the F-111A/D/E and F models prior to those hanges being released to operational F-111 Tactical wings in the United States and Europe. In addition was tasked with exploiting foreign technologies, and developing leading edge tactics to improve the future combat capability of aerospace forces.

Squadron remained active until June 1992 when the F-111 was retired at the end of the Cold War
Cold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...

.

Lineage

  • Activated on 14 May 1943 by special authority prior to constitution as 431st Fighter Squadron on 15 May 1943.
Inactivated on 1 April 1949.
  • Redesignated 431st Fighter-Interceptor Squadron on 11 September 1952.
Activated on November 1952.
Inactivated on 18 May 1964
  • Reactivated and redesignated as 431st Tactical Fighter Squadron, 25 July 1964
Inactivated on 30 October 1970
  • Reactivated and redesignated as 431st Tactical Fighter Training Squadron, 15 January 1976
Inactivated on 1 October 1978.
  • Reactivated and redesignated as 431st Fighter Weapons Squadron, 1 October 1980
Redesignated: 431st Test and Evaluation Squadron on 30 December 1981
Inactivated on 30 June 1992

Assignments

  • 475th Fighter Group, 14 May 1943-1 April 1949
Attached to 347th Fighter Group, 15 November 1947-28 August 1948
  • 4708th Defense Wing, 1 November 1952
  • 575th Air Defense Group
    575th Air Defense Group
    The 575th Air Defense Group is a disbanded United States Air Force organization. Its last assignment was with the 4708th Air Defense Wing, being stationed at Selfridge Air Force Base, Michigan. It was inactivated on 18 August 1955.-History:...

    , 16 February 1953
  • Seventeenth Air Force
    Seventeenth Air Force
    Seventeenth Air Force is a numbered air force of the United States Air Force located at Ramstein Air Base, Germany. The command served the United States Air Forces in Europe during its years of active service...

    , 10 July 1953
  • 1603d Air Transport (later 7272d Air Base) Wing, 20 July 1953
  • 7272d Operations Group, 1 March 1958
  • 65th Air Division, 1 September 1958
  • United States Air Forces in Europe
    United States Air Forces in Europe
    The United States Air Forces in Europe is the United States Air Force component of U.S. European Command, a Department of Defense unified command, and is one of two Air Force Major Commands outside of the continental United States, the other being the Pacific Air Forces...

Attached to 65th Air Division, 1 July 1960-18 May 1964
  • 8th Tactical Fighter Wing, 25 July 1964-6 December 1965
Detached to 479th Tactical Fighter Wing, 6 December 1965-14 June 1968
  • 479th Tactical Fighter Wing, 15 June 1968-30 October 1970
  • 35th Tactical Fighter Wing, 15 January 1976-1 October 1978
  • 57th Fighter Weapons Wing, 1 October 1980-30 June 1992

Stations

  • Charters Towers, Australia
    Australia
    Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

    , 14 May 1943
  • RAAF Base Amberley
    RAAF Base Amberley
    RAAF Base Amberley is a Royal Australian Air Force base located southwest of Ipswich, Queensland and southwest of Brisbane. It is currently home to No. 1 Squadron and No. 6 Squadron , No. 33 Squadron and No. 36 Squadron...

    , Australia
    Australia
    Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

    , c. 1 July 1943
  • Dobodura Airfield Complex, New Guinea
    New Guinea
    New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

    , 14 August 1943
Operated from Port Moresby Airfield Complex, New Guinea
New Guinea
New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

, 8 August-3 October 1943
  • Nadzab Airfield Complex, New Guinea
    New Guinea
    New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

    , 26 March 1944
  • Hollandia Airfield Complex, New Guinea
    New Guinea
    New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

    , 15 May 1944
  • Mokmer Airfield, Biak
    Biak
    Biak features a tropical rainforest climate with nearly identical temperatures throughout the course of the year. The average annual temperature in the city is 27 degrees celsius, which is also generally the average temperature of each day in Biak...

    , Netherlands East Indies, 15 July 1944
  • Dulag Airfield
    Dulag Airfield
    Dulag Airfield is a World War II airfield located near Dulag in the province of Leyte, Philippines. It was closed after the war.-History:The airfield was built by the Japanese during the Occupation of the Philippines in 1943...

    , Leyte
    Leyte
    Leyte is a province of the Philippines located in the Eastern Visayas region. Its capital is Tacloban City and occupies the northern three-quarters of the Leyte Island. Leyte is located west of Samar Island, north of Southern Leyte and south of Biliran...

    , 9 November 1944
Detachment operated from San Jose, Mindoro
Mindoro
Mindoro is the seventh-largest island in the Philippines. It is located off the coast of Luzon, and northeast of Palawan. The southern coast of Mindoro forms the northeastern extremum of the Sulu Sea.-History:...

, 5 February—c. 4 March 1945
  • Clark Field, Luzon
    Luzon
    Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

    , 28 February 1945

  • Lingayen Airfield, Luzon
    Luzon
    Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...

    , 19 April 1945
  • Ie Shima Airfield
    Ie Shima Airfield
    is a gunnery and training facility, managed by the United States Marine Corps and a former World War II airfield complex on Ie Shima, an island located off the northwest coast of Okinawa Island in the East China Sea...

    , Okinawa, 8 August 1945
  • Kimpo AB, Korea
    Korea
    Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

    , 5 October 1945
  • Tachikawa AB, Japan
    Japan
    Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

    , c. 20 February 1947
  • Itazuke AB, Japan
    Japan
    Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

    , 15 November 1947
  • Ashiya AB, Japan
    Japan
    Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

    , 25 March—1 April 1949
  • Selfridge AFB, Michigan
    Michigan
    Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

    , 1 November 1952-23 June 1953
  • Wheelus AB, Libya
    Libya
    Libya is an African country in the Maghreb region of North Africa bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west....

    , 20 July 1953-3 September 1958
  • Zaragoza AB, Spain
    Spain
    Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

    , 3 September 1958—18 May 1964
  • George AFB, California
    California
    California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

    , 18 May 1964-30 October 1970; 15 January 1976-1 October 1978
  • Nellis AFB, Nevada
    Nevada
    Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

    , 1 October 1980-30 June 1992
Operated from McClellan AFB, California


Aircraft

  • P-38 Lightning
    P-38 Lightning
    The Lockheed P-38 Lightning was a World War II American fighter aircraft built by Lockheed. Developed to a United States Army Air Corps requirement, the P-38 had distinctive twin booms and a single, central nacelle containing the cockpit and armament...

    , 1943–1946
  • P-51 Mustang
    P-51 Mustang
    The North American Aviation P-51 Mustang was an American long-range, single-seat fighter and fighter-bomber used during World War II, the Korean War and in several other conflicts...

    , 1946–1949; F-51, 1952–1953
  • F-86D Sabre Interceptor, 1953–1960
  • F-102 Delta Dagger
    F-102 Delta Dagger
    The Convair F-102 Delta Dagger was a US interceptor aircraft built as part of the backbone of the United States Air Force's air defenses in the late 1950s. Entering service in 1956, its main purpose was to intercept invading Soviet bomber fleets...

    , 1960–1964
  • F-4 Phantom II
    F-4 Phantom II
    The McDonnell Douglas F-4 Phantom II is a tandem two-seat, twin-engined, all-weather, long-range supersonic jet interceptor fighter/fighter-bomber originally developed for the United States Navy by McDonnell Aircraft. It first entered service in 1960 with the U.S. Navy. Proving highly adaptable,...

    , 1964–1970; 1976–1978
  • F-111 Aardvark, Various, 1980–1992

External links

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