Misplaced Pages

521st Air Defense Group
F-86D of the 87th Fighter-Interceptor Squadron at Lockbourne AFB
Active	1945; 1953–1955
Country	United States
Branch	United States Air Force
Type	Fighter interceptor
Role	Air Defense

The 521st Air Defense Group is a disbanded United States Air Force organization. Its last assignment was with the 31st Air Division at Sioux City Municipal Airport, Iowa, where it was inactivated in 1955. The group was originally activated as the 521st Air Service Group, a support unit for the 310th Bombardment Group at the end of World War II in Italy and then redeployed to the United States where it was inactivated in 1945.

The group was activated as the 521st Air Defense Group once again in 1953, when Air Defense Command (ADC0 established it as the headquarters for a dispersed fighter-interceptor squadron and the medical, aircraft maintenance, and administrative squadrons supporting it. It was replaced in 1955 when ADC transferred its mission, equipment, and personnel to the 53d Fighter Group in a project that replaced air defense groups commanding fighter squadrons with fighter groups with distinguished records during World War II.

World War II

The group was first activated as the 521st Air Service Group in a reorganization of Army Air Forces (AAF) support groups in which the AAF replaced service groups that included personnel from other branches of the Army and supported two combat groups with air service groups including only Air Corps units. It was designed to support a single combat group. Its 947th Air Engineering Squadron provided maintenance that was beyond the capability of the combat group, its 771st Air Materiel Squadron handled all supply matters, and its Headquarters & Base Services Squadron provided other support. The group supported 310th Bombardment Group in Italy. The group returned to the US in 1945 and was inactivated. It was disbanded in 1948.

Cold War

The group was reconstituted, redesignated as the 521st Air Defense Group, and activated at Sioux City Municipal Airport in 1953 with responsibility for air defense of central Midwestern United States. It was assigned the 87th Fighter-Interceptor Squadron (FIS), which was already stationed at Sioux City Airport, and flying World War II era North American F-51 Mustangs as its operational component. The 87th FIS had been assigned directly to the 31st Air Division. The group replaced the 79th Air Base Squadron as the host USAF unit at Sioux City Municipal Airport. It was assigned three squadrons to perform its support responsibilities.

In the fall of 1953 the 87th FIS upgraded to radar equipped and Mighty Mouse rocket armed North American F-86D Sabre jet aircraft and the 14th Fighter-Interceptor Squadron, also flying Sabres, was activated as the group's second operational squadron. In November 1954 the 87th FIS moved to England and was reassigned. The 87th FIS was replaced the next month by the 519th Fighter-Interceptor Squadron, another Sabre squadron. The group was inactivated and replaced by the 53d Fighter Group (Air Defense) in 1955 as part of Air Defense Command's Project Arrow, which was designed to bring back on the active list the fighter units which had compiled memorable records in the two world wars. It was disbanded once again in 1984.

Lineage

• Constituted as the 521st Air Service Group

Activated on 1 January 1945

Inactivated on or about 7 November 1945

Disbanded on 8 October 1948

• Reconstituted and redesignated as 521st Air Defense Group on 21 January 1953

Activated on 16 February 1953

Inactivated on 18 August 1955

Disbanded on 27 September 1984

Assignments

• XII Air Force Service Command, 1 January 1945
• Unknown, c. 17 July 1945 – 7 November 1945
• 31st Air Division, 1 January 1953 – 18 August 1955

Stations

• Ghisonaccia Airfield, Corsica, France, 1 January 1945 – 7 April 1945
• Fano Airfield, Italy 7 April 1945 – c. 6 July 1945
• Naples, Italy, c.. 6 July 1945 – c. 17 July 1945
• Camp Patrick Henry, Virginia, c. 26 Jul 1945 – c. 30 July 1945
• Unknown, July 1945–7 Nov 1945
• Sioux City Municipal Airport, Iowa, 1 January 1953 – 18 August 1955

Components

Aircraft

• North American F-51D Mustang, 1953
• North American F-86D Sabre, 1953–1955

See also

• List of United States Air Force Aerospace Defense Command Interceptor Squadrons
• List of F-86 Sabre units

Notes

Explanatory notes

1. Aircraft is North American F-86D-30-NA Sabre, seria 51-6035. Taken in 1956.

Citations

1. ^ Coleman, p. 208
2. Abstract, History of 947th Air Engineering Squadron, Jan 1945 (retrieved 9 January 2012)
3. Abstract, History of 771st Air Materiel Squadron, Jan 1945 (retrieved 9 January 2012)
4. Abstract, History of 771st Air Materiel Squadron, Mar 1945 (retrieved 9 January 2012)
5. ^ Department of the Air Force Letter, 322 (AFOOR 887e), 8 October 1948, Subject: Disbandment of Certain Inactive Air Force Units
6. ^ Cornett & Johnson, p. 82
7. ^ Cornett & Johnson, p.120
8. ^ Bailey, Carl E. (20 August 2008). "Factsheet 87 Flying Training Squadron (AETC)". Air Force Historical Research Agency. Retrieved 10 April 2023.
9. ^ Maurer, Combat Squadrons, pp. 299–300
10. Cornett & Johnson, p.147
11. ^ Abstract, History of 521st USAF Infirmary, Jan–Jun 1955 (retrieved 22 June 2012)
12. ^ Cornett & Johnson, p.114
13. ^ Maurer, Combat Squadrons, p. 78
14. Cornett & Johnson, p.130
15. ^ Maurer, Combat Squadrons, pp. 623–624
16. Maurer, Combat Units, p. 115
17. Robertson, Patsy AFHRA Factsheet, 53rd Wing Archived 4 January 2013 at the Wayback Machine 2/24/2009 (retrieved 3 March 2012)
18. Buss, Sturm, Volan, & McMullen, p.6
19. ^ Department of the Air Force/MPM Letter 575q, 27 Sep 1984, Subject: Disbandment of Units
20. ^ Abstract, History of 521st Air Service Group, Jan–Feb 1945 (retrieved 22 June 2012)
21. Abstract, History of 521st Air Service Group, Apr 1945 (retrieved 22 June 2012)

References

 This article incorporates public domain material from the Air Force Historical Research Agency

• Buss, Lydus H.(ed), Sturm, Thomas A., Volan, Denys, and McMullen, Richard F., History of Continental Air Defense Command and Air Defense Command July to December 1955, Directorate of Historical Services, Air Defense Command, Ent AFB, CO, (1956)
• Coleman, John M (1950). The Development of Tactical Services in the Army Air Forces. New York, NY: Columbia University Press.
• Cornett, Lloyd H; Johnson, Mildred W (1980). A Handbook of Aerospace Defense Organization, 1946–1980 (PDF). Peterson AFB, CO: Office of History, Aerospace Defense Center. Archived from the original (PDF) on 23 November 2006. Retrieved 20 November 2011.
• Maurer, Maurer, ed. (1983) . Air Force Combat Units of World War II (PDF) (reprint ed.). Washington, DC: Office of Air Force History. ISBN 0-912799-02-1. LCCN 61060979.
• Maurer, Maurer, ed. (1982) . Combat Squadrons of the Air Force, World War II (PDF) (reprint ed.). Washington, DC: Office of Air Force History. ISBN 0-405-12194-6. LCCN 70605402. OCLC 72556.

Further reading

• Grant, C.L., (1961) The Development of Continental Air Defense to 1 September 1954, USAF Historical Study No. 126
• Leonard, Barry (2009). History of Strategic Air and Ballistic Missile Defense (PDF). Vol. I. 1945–1955. Fort McNair, DC: Center for Military History. ISBN 978-1-4379-2131-1. Archived from the original (PDF) on 10 November 2013. Retrieved 6 December 2012.

External links

v t e Aerospace Defense Command (ADC)
Bases	CONUS Amarillo Beale Charleston Davis-Monthan Dobbins Dover Dow Duluth Eglin Edwards Ellington Ellsworth England Ent Ethan Allen Fairfax Fallon Fort Gregg-Adams Fort Heath Geiger George Glasgow Grand Forks Grenier Griffiss Gunter Hamilton Hancock Homestead Hurlburt Hunter Imeson Key West Kincheloe Kingsley Kirtland Lackland Laredo Larson Luke MacDill March Malmstrom McCoy McChord McClellan McGhee Tyson McGuire Minneapolis-St. Paul Minot Mitchel New Castle Niagara Falls Norton O'Hare Otis Oxnard Paine Perrin Peterson Pittsburgh Portland Presque Isle R.I. Bong Richards-Gebaur Robins K.I. Sawyer Selfridge Seymour Johnson Sioux City Stead Stewart Suffolk County Tinker Travis Truax Tyndall Vandenberg Vincent Walker Webb Westover Wright-Patterson Wurtsmith Youngstown Overseas Ernest Harmon Frobisher Bay Goose Keflavik McAndrew Pepperrell Thule
Stations	CONUS Adair Aiken Almaden Alpena Antigo Arlington Heights Baker Bedford Bellefontaine Belleville Benton Blaine Brookfield Brunswick Bucks Harbor Burns Calumet Cambria Cape Charles Cape Cod Carmi Caswell Chandler Charleston Cheyenne Mountain Claysburg Clear Colville Condon Continental Divide Cottonwood Cross City Crystal Springs Curlew Custer Cut Bank Dallas Center Dauphin Island Dickinson Duncanville Eldorado Empire Finland Finley Flintstone Fordland Fort Fisher Fort Lee Fortuna Gettysburg Grand Marais Grand Rapids Guthrie Hanna City Havre Highlands Houma Hutchinson Joelton Keno Killeen Kingman Kirksville Klamath Lake Charles Lake City Las Cruces Las Vegas Lewistown Lockport Lufkin Lyndonville Madera Makah Mica Peak Miles City Mill Valley Minot Montauk Moriarty Mount Hebo Mount Laguna Mount Lemmon Naselle North Bend North Charleston North Truro Oklahoma City Olathe Omaha Opheim Osceola Othello Owingsville Ozona Palermo Point Arena Port Austin Port Isabel Pyote Red Bluff Rochester Rockport Rockville (Indiana) Roslyn Rye Saint Albans San Clemente Island Santa Rosa Island Saratoga Springs Sault Ste Marie Shemya Snelling Snow Mountain Sweetwater Texarkana Tierra Amarilla Thomasville Tonopah Topsham Two Creeks Wadena Walnut Ridge Watertown Waverly West Mesa Willow Run Winnemucca Winslow Winston-Salem Woomera Yaak Zapata Overseas Armstrong Baldy Hughes Beausejour Cape Makkovik Cartwright Cut Throat Island Elliston Ridge Fox Harbour Hofn Hopedale Kamloops La Scie Langanes Latrar Melville Puntzi Mountain Ramore Red Cliff Rockville Saglek St. Anthony Saskatoon Mountain Sioux Lookout Spotted Island Stephenville
Air Defense units	Forces Central Air Defense Eastern Air Defense Iceland Western Air Defense First Fourth Tenth Fourteenth Air Divisions 8th 9th 20th 21st 23d 24th 25th 26th 27th 28th 29th 30th 31st 32d 33d 34th 35th 36th 37th 58th 64th 73d 85th Sectors Albuquerque Bangor Boston Chicago Detroit Duluth Goose Grand Forks Great Falls Kansas City Los Angeles Minot Montgomery New York Oklahoma City Phoenix Portland Reno Sault Sainte Marie San Francisco Seattle Sioux City Spokane Stewart Syracuse Washington Wings Fighter 1st 4th 23d 32d 33d 50th 52d 56th 78th 81st 325th 328th 507th Detection and Control 71st 73d 551st 552d Air Defense 46th 4620th 4621st 4622d 4624th 4625th 4627th 4628th 4683d 4700th 4702d 4703d 4704th 4705th 4706th 4707th 4708th 4709th 4710th 4711th 4750th 4751st 4752d 4756th 4780th Groups Fighter 1st 4th 14th 15th 23d 32d 33d 50th 52d 53d 54th 56th 57th 78th 79th 81st 82d 84th 325th 326th 327th 328th 329th 337th 343d 355th 408th 412th 414th 473d 475th 476th 478th 507th Air Defense 10th 500th 501st 502d 503d 514th 515th 516th 517th 518th 519th 520th 521st 525th 527th 528th 529th 530th 533d 534th 564th 566th 567th 568th 575th 637th 665th 678th 692d 701st 751st 762d 765th 778th 780th 827th 858th 4606th 4620th 4676th 4700th 4721st 4722d 4727th 4728th 4729th 4730th 4731st 4732d 4733d 4734th 4735th 4750th 4756th Aircraft Control & Warning 503d 505th 540th 541st 542d 543d 544th 545th 546th 563d 564th 565th 566th Squadrons Aerospace Defense Command Fighter Squadrons Aircraft Control and Warning Squadrons
Major weapon systems	Electronic TB-29 EB-57 EC-121 Fighters Propeller: F-47 F-51 P-61 F-82 Subsonic Jet: P-80 F-84 F-86 F-89 F-94 Supersonic Jet: F-101 F-102 F-104 F-106 Missiles AIM-4 AIM-26 AIR-2 CIM-10 Ships Guardian Interceptor Interdictor Interpreter Investigator Locator Lookout Outpost Pickett Protector Scanner Searcher Skywatcher Tracer Watchman Vigil Texas Towers Texas Tower 2 Texas Tower 3 Texas Tower 4
Miscellaneous	Air Defense Command Emblem Gallery (on Wikimedia Commons) General Surveillance Radar Stations

v t e USAAF Twelfth Air Force in World War II
Stations Morocco Berguent Casablanca Guercif Louis Gentil Marnia Médiouna Nouasser Port Lyautey Oujda Rabat Sale Ras el Ma Algeria Ain M'lila Berteaux Biskra Canrobert Chateau-dun-du-Rhumel Constantine Es Sénia (Oran) Maison Blanche (Algiers) Matemore Montesquieu Nouvion Orleansville Philippeville Relizane Rerhaia Saint-Donat Saint-Leu Sedrata Sainte-Barbe du Tlélat Tafaraoui (Oran) Tébessa Telergma Thiersville Youks-les-Bains Tunisia Bizerte Dar el Koudia Depienne Djedeida Djilma Ebba Ksour El Djem El Bathan Enfidaville Goubrine Grombalia Hergla Kairouan Korba La Marsa La Sebala Le Sers Massicault Mateur Menzel Temime Monastir Oudna Pont du Fahs Protville Sainte Marie du Zit Souk-el-Arba Souk-el-Khemis Soliman Sousse Thelepte Italy Agrigento (Sicily) Bagnoli Barcelona LG (Sicily) Bari Boccadifalco (Sicily) Borizzo (Sicily) Capodichino (Naples) Castel Volturno Castelvetrano (Sicily) Cassibile (Sicily) Cattolica Catania (Sicily) Cercola Comiso (Sicily) Ciampino (Rome) Cesenatico Decimomannu (Sardinia) Elmas (Sardinia) Falconara Fano Florence Foggia Follonica Gaudo Gerbini (Sicily) Gioia Grosseto Grottaglie Iesi Le Banca Lecce Licata (Sicily) Manduria Marcianise Malignano Mazzara (Sicily) Milazzo (Sicily) Messina (Sicily) Montalto Di Castro Nettuno Montecorvino Ombrene Orbetello Paestum Pisa Pantelleria Pignataro Maggiore Piombino Pomigliano Ponte Galeria Pontedera Pompeii Ponte Olivo (Sicily) Reggio Calabria Rocca Bernardo Rosia San Pancrazio Santa Maria Scordia (Sicily) Sele Serretella Tarquinia Termini (Sicily) Tortorella Torrente Comunelli Tre Cancello Voltone Vesuvius France Aghione (Corsica) Amberieu (Y-5) Amiens (B-48) Clastres (A-71) Dijon (Y-9) Dôle-Tavaux (Y-7) Ghisonaccia (Corsica) Gisonochia (Corsica) Istres (Y-17) La Vallon (Y-18) Le Luc Luneville (Y-2) Loyettes (Y-25) Poretta (Corsica) Saint-Dizier (A-64) Salon de Provence (Y-16) Serragia (Corsica) Solonzara (Corsica) Tantonville (Y-1) Toul-Ochey (A-96)
Units Commands XII Bomber XII Tactical Air XXII Tactical Air XII Troop Carrier (Provisional) Wings 5th Bombardment 42d Bombardment 47th Bombardment (7th Fighter) 51st Troop Carrier 52d Troop Carrier 57th Bombardment 62d Fighter 63d Fighter 64th Fighter 87th Fighter 90th Photographic Groups Bombardment 2d Bombardment 12th Bombardment 17th Bombardment 47th Bombardment 97th Bombardment 98th Bombardment 99th Bombardment 301st Bombardment 310th Bombardment 319th Bombardment 320th Bombardment 321st Bombardment 340th Bombardment 376th Bombardment Fighter 1st Fighter 14th Fighter 27th Fighter 31st Fighter 33d Fighter 52d Fighter 57th Fighter 79th Fighter 81st Fighter 82d Fighter 86th Fighter 324th Fighter 325th Fighter 332d Fighter 350th Fighter Reconnaissance 3d Reconnaissance 5th Reconnaissance 68th Reconnaissance Troop carrier 60th Troop Carrier 61st Troop Carrier 62d Troop Carrier 64th Troop Carrier 313th Troop Carrier 314th Troop Carrier 316th Troop Carrier Squadrons 15th Bombardment 414th Night Fighter 415th Night Fighter 416th Night Fighter 417th Night Fighter 427th Night Fighter
United States Army Air Forces First Second Third Fourth Fifth Sixth Seventh Eighth Ninth Tenth Eleventh Twelfth Thirteenth Fourteenth Fifteenth Twentieth

• Air defense groups of the United States Air Force
• Aerospace Defense Command units
• Military units and formations established in 1953
• Military units and formations disestablished in 1955