Japan Air Self-Defense Force

The Japan Air Self-Defense Force (航空自衛隊, Kōkū Jieitai), JASDF, also referred to as the Japanese Air Force,[2] is the air warfare branch of the Japan Self-Defense Forces, responsible for the defense of Japanese airspace and for other aerospace operations.[3] The JASDF carries out combat air patrols around Japan, while also maintaining a network of ground and air early-warning radar systems. The branch also has an aerobatic team known as Blue Impulse and has provided air transport in UN peacekeeping missions.

"Japanese Air Force" redirects here. For other uses, see Japanese Air Force (disambiguation).
Japan Air Self-Defense Force
航空自衛隊
Japan Air Self-Defense Force emblem
Founded1 July 1954 (1954-07-01)[1]
Country Japan
TypeAir force
RoleAerial warfare
Size50,324 personnel (2013)[1]
745 aircraft
Part of Japan Self-Defense Forces
Garrison/HQIchigaya, Shinjuku, Tokyo, Japan
Motto(s)"Key to Defense, Ready Anytime!"
Websitewww.mod.go.jp/asdf
Commanders
Prime Minister of JapanPM Shinzō Abe
Minister of DefenseTarō Kōno
Chief of Staff, Joint StaffGeneral Kōji Yamazaki
Chief of the Air StaffGeneral Yoshinari Marumo
Insignia
Roundel
Flag
Aircraft flown
Electronic
warfare		E-767, EC-1, E-2C/D, YS-11EA/EB
FighterF-15J/DJ, F-2A/B, F-35A, F-4EJ/EJ Kai
HelicopterUH-60J, CH-47J (LR)
TrainerT-7, T-400, T-4
TransportC-1, C-2, KC-767, C-130H, Boeing 777-300ER
Air Defense Identification Zone of Japan
Hyakuri Air Base aerial view

The JASDF had an estimated 50,000 personnel as of 2013, and as of 2020 operates about 740 aircraft, approximately 330 of them fighter aircraft.[4]

As early as Fiscal Year 2021, the service's name will change to the Japan Aerospace Self-Defense Force in recognition of the increasing importance of the space domain.[5]

History
See also: Military history of Japan

Japan did not have a separate air force before and during World War II. Aviation operations were carried out by the Imperial Japanese Army Air Service and the Imperial Japanese Navy Air Service (Kōkūtai). Following World War II, the Imperial Japanese Army and Navy were disbanded in 1945. Article 9 of the United States–written 1947 constitution prevented Japan from having a regular military.

On 1 July 1954, the National Security Board was reorganized as the Defense Agency, and the National Security Force was reorganized afterwards as the Japan Ground Self-Defense Force (de facto post-war Japanese Army), the Coastal Safety Force was reorganized as the Japan Maritime Self-Defense Force (de facto post-war Japanese Navy) and the Japan Air Self-Defense Force (de facto post-war Japanese Air Force) was established as a new branch of JSDF. General Keizō Hayashi was appointed as the first Chairman of Joint Staff Council—professional head of the three branches. The enabling legislation for this was the 1954 Self-Defense Forces Act (Act No. 165 of 1954).[6][7]

The Far East Air Force, U.S. Air Force, announced on 6 January 1955, that 85 aircraft would be turned over to the fledgling Japanese air force on about 15 January, the first equipment of the new force.[8]

The JASDF Air Defense Command Headquarters was relocated from Fuchu Air Base to Yokota Air Base on March 26, 2012. The relocation is due to the 2002 Defense Policy Review Initiative. The purpose is to strengthen the U.S.-Japan Security Alliance. The ADC Headquarters does command and control operations to defend Japanese airspace.

Until 2015, women were banned from becoming fighter jet and reconnaissance aircraft pilots. The first female pilot of a F-15 joined the ranks, along with three other female pilots currently in training, in 2018.[9]

Since 2008, the number of scrambles to intercept Chinese aircraft has increased rapidly. In 2010 there were scrambles against 31 Chinese aircraft and 193 Russian aircraft. In 2018 scrambles increased to against 638 Chinese aircraft and 343 Russian aircraft. Chinese aircraft flight paths are mostly in the East China Sea, around the Ryukyu islands and through the Korea Strait. Russia frequently conducts flights orbiting Japan with military aircraft.[10]

The Ministry of Defense reported in fiscal 2018 that there were 999 scrambles by JASDF jets against mainly Chinese and Russian unidentified aircraft. That is the second highest amount of scrambles by the JASDF since 1958. 638 (64%) were Chinese aircraft and 343 (34%) were Russian aircraft. On June 20 2019, two Russian bombers (Tupolev Tu-95) violated Japanese airspace twice on the same day.[11]

  • JASDF Lockheed T-33 jet trainers in 1955
  • Number of scrambles and its breakdown of the JASDF (2010 - 2018)

Organization
Japan Air Self-Defense Force Air Defense Command Headquarters (2012)

Major units of the JASDF are the Air Defense Command, Air Support Command, Air Training Command, Air Development and Test Command, and Air Materiel Command. The Air Support Command is responsible for direct support of operational forces in rescue, transportation, control, weather monitoring and inspection. The Air Training Command is responsible for basic flying and technical training. The Air Development and Test Command, in addition to overseeing equipment research and development, is also responsible for research and development in such areas as flight medicine. On May 19, 2020 the JASDF officially inaugurated its Space Operation Squadron.[12]

F-15DJ Eagle
F-2B

The Air Defense Command has northern, central, and western regional headquarters located at Misawa, Iruma, and Kasuga, respectively and the Southwestern Composite Air Division based at Naha, Okinawa Prefecture. All four regional headquarters control surface-to-air missile units of both the JASDF and the JGSDF located in their respective areas.

KC-767 tanker in 2017

JASDF Flag
Flag of the JASDF

The Japan Air Self-Defense Force flag was first adopted in 1955 after the JASDF was created in 1954. It is based on a cap badge made in 1954. The flag is cobalt blue with a gold winged eagle on top of a combined star, the moon, the Hinomaru sun disc and clouds.[13][14] The latest version of the JASDF flag was re-adopted on 19 March 2001.[15] The JASDF flag is different from the JSDF flag and the JGSDF flag. It is determined by a directive regarding the flags of the JSDF.

Ranks
Main article: Military ranks and insignia of the Japan Self-Defense Forces § Air Self-Defense Force

Officers（幹部）
NATO codeOF-9OF-8OF-7OF-5OF-4OF-3OF-2OF-1
Rank空将
（統合幕僚長および航空幕僚長）		空将空将補 1等空佐2等空佐3等空佐 1等空尉2等空尉3等空尉
English translationGeneralLieutenant generalMajor general ColonelLieutenant colonelMajor CaptainFirst lieutenantSecond lieutenant
Insignia Type A
（甲階級章）
Insignia Type B
（乙階級章）
Insignia Miniature Type
（略章）

Warrant Officer and Enlisted（准尉および曹士）
NATO codeOR-9OR-8OR-7OR-6OR-5OR-3OR-2OR-1OR-D
Rank准空尉空曹長1等空曹2等空曹3等空曹 空士長1等空士2等空士自衛官候補生
English translationWarrant officerSenior master sergeantMaster sergeantTechnical sergeantStaff sergeantAirman 1st classAirman 2nd classAirman 3rd classSelf defense official cadet
Insignia Type A
（甲階級章）

Insignia Type B
（乙階級章）
Insignia Miniature Type
（略章）		 No insignia


Equipment
See also: List of military aircraft of Japan

The JASDF maintains an integrated network of radar installations and air defense direction centers throughout the country known as the Basic Air Defense Ground Environment. In the late 1980s, the system was modernized and augmented with E-2C Hawkeye airborne early warning aircraft. The nation relies on fighter-interceptor aircraft and surface-to-air missiles to intercept hostile aircraft. Both of these systems were improved from the beginning of the late 1980s. Outmoded aircraft were replaced in the early 1990s with more sophisticated models, and Nike-J missiles have been replaced with the modern Patriot PAC-2 and PAC-3 system. The JASDF also provides air support for ground and sea operations of the JGSDF and the JMSDF and air defense for bases of all the forces. Base defenses were upgraded in the late 1980s with new surface-to-air missiles, modern antiaircraft artillery and new fixed and mobile aircraft shelters.

Aircraft
A JASDF F-35
An E-2C Hawkeye landing at Misawa Air Base
A CH-47J from Iruma Air Base
A Kawasaki T-4
Aircraft Origin Type Variant In service Notes
Combat Aircraft
Mitsubishi F-2 Japan multirole 62[16] based on the Lockheed Martin F-16
F-4 Phantom II United States multirole F-4EJ 34[16]
Mitsubishi F-15J Japan air superiority 155[17] manufactured by Mitsubishi Heavy Industries
F-35 Lightning II United States multirole F-35A 12[16] 135 on order[17]
AWACS
Boeing E-767 United States early warning and control 4[16]
E-2 Hawkeye United States AEW E-2C/D 14 12 on order[16]
Electronic Warfare
Kawasaki C-1 Japan electronic warfare 1[16]
NAMC YS-11 Japan electronic warfare 4[16]
Tanker
Boeing KC-767 United States aerial refueling / transport 4[16]
KC-46 Pegasus United States aerial refueling / transport 3 on order[16]
Lockheed Martin KC-130 United States aerial refueling KC-130H 2[16]
Transport
Boeing 777 United States VIP 777-300ER 2[18] call sign Japanese Air Force One
Hawker 800 United Kingdom SAR / transport U-125A 27[16]
Kawasaki C-1 Japan transport 16[16]
Kawasaki C-2 Japan heavy transport 8 12 on order[16]
C-130 Hercules United States transport C-130H 2[16]
NAMC YS-11 Japan transport / flight inspection[19] 2[16]
Gulfstream IV United States transport / flight inspection[20] 5[16]
British Aerospace 125[21] United Kingdom transport / flight inspection 2
Cessna Citation Latitude United States transport / flight inspection 2[22] 1 on order
Helicopters
CH-47 Chinook United States transport / utility CH-47J 17[16] licensed built by Kawasaki Heavy Industries
Sikorsky UH-60 United States utility / SAR[20] UH-60J 50[16] licensed built by Mitsubishi
Trainer Aircraft
Mitsubishi F-15J Japan conversion trainer F-15DJ 45[16] manufactured by Mitsubishi Heavy Industries
Hawker 400 United States jet trainer T-1 Jayhawk 13[16]
Mitsubishi F-2 Japan conversion trainer F-2B 26[16]
Kawasaki T-4 Japan jet trainer 200[16]

See also

References
  1. "What is JASDF?｜ORGANIZATION ｜ [JASDF] Japan Air Self-Defense Force". www.mod.go.jp. Archived from the original on 2015-03-17. Retrieved 2015-02-04.
  2. Gao, Charlie (19 February 2018). "Japan's Air Force: The Best in Asia?". Archived from the original on 30 May 2018. Retrieved 29 May 2018.
  3.  This article incorporates public domain material from the Library of Congress Country Studies website http://lcweb2.loc.gov/frd/cs/.
  4. "World Air Forces 2014". Archived 2013-12-25 at the Wayback Machine Flightglobal.com
  5. Koji, Miyake (5 February 2020). "Singapore Airshow 2020: Japan to form an 'aerospace' force".
  6. Takei, Tomohisa (2008). "Japan Maritime Self Defense Force in the New Maritime Era" (PDF). Hatou. Hatou. 34: 3. Archived from the original (pdf) on 15 December 2018.CS1 maint: ref=harv (link)
  7. 武居智久 (2008). 海洋新時代における海上自衛隊 [Japan Maritime Self Defense Force in the New Maritime Era] (PDF). 波涛 (in Japanese). 波涛編集委員会. 34: 5. Archived from the original (pdf) on 15 December 2018.CS1 maint: ref=harv (link)
  8. Associated Press, "Jap Air Force Will Get 85 U. S. Planes", Pittsburgh Post-Gazette (Pittsburgh, Pennsylvania), 7 January 1955, Volume 28, Number 137, page 2.
  9. "First Japanese woman to fly fighter jet". BBC News. 2018-08-24. Archived from the original on 2018-08-24. Retrieved 2018-08-24.
  10. "Airspace Surrounding Japan". Japan Ministry of Defense. 26 August 2018. Archived from the original on 26 August 2018. Retrieved 28 October 2019.
  11. "Russian bombers violated Japan's airspace twice in one day, defense ministry says". Stars and Stripes. 2019-06-21. Archived from the original on 2019-06-22. Retrieved 2019-06-23.
  12. "Japan sets up its first 'Space Operations Squadron'". Jane's. 18 May 2020. Retrieved 20 May 2020.
  13. 自衛隊の旗に関する訓令
  14. 桜星の数はかつての陸上自衛隊と同様、階級ではなく部隊規模を示していた。
  15. "Air Self Defense Force (Japan) ｜publisher=CRW Flags". www.crwflags.com. Archived from the original on 2016-03-15. Retrieved 2019-10-26.
  16. "World Air Forces 2020". Flightglobal Insight. 2020. Retrieved 10 March 2020.
  17. "Japan Receives 1st F-35 Joint Strike Fighter". thediplomat.com. Retrieved 19 March 2017.
  18. "Japan's New Air Force One". AirForces Monthly. Key Publishing. June 2019. p. 24.
  19. "YS-11FC". Japan Air Self Defense Force (in Japanese). Retrieved 16 May 2020.
  20. "U-4" (in Japanese). Retrieved 16 May 2020.
  21. "U-125". Japan Air Self Defense Force (in Japanese). Retrieved 16 May 2020.
  22. "Textron delivers first two U-680As to JASDF". Key Aero. 24 April 2020. Retrieved 16 May 2020.
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