is a squadron of the

Japan Air Self-Defense Force The , , also informally referred to as the Japanese Air Force, is the air and space branch of the Japan Self-Defense Forces, responsible for the defense of Japanese airspace, other air and space operations, cyberwarfare and electronic warfa ...

based at

Iruma Air Base is a Japan Air Self-Defense Force (JASDF) base located in the city of Sayama, Saitama Prefecture, north of western Tokyo, Japan. It was the airfield for the Imperial Japanese Army Air Force Academy until 1945, when it became Johnson Air Fo ...

Saitama Prefecture is a landlocked prefecture of Japan located in the Kantō region of Honshu. Saitama Prefecture has a population of 7,338,536 (1 January 2020) and has a geographic area of 3,797 km2 (1,466 sq mi). Saitama Prefecture borders Tochigi Prefecture ...

north of Tokyo. Under the authority of the

Central Air Defense Force The Central Air Defense Force (CADF) is an inactive United States Air Force organization. Its last assignment was with Air Defense Command being stationed at Richards-Gebaur Air Force Base, Missouri. It was inactivated on July 1, 1960. History C ...

, the squadron operates

Kawasaki T-4 The Kawasaki T-4 is a Japanese subsonic intermediate jet trainer aircraft developed and manufactured by the commercial conglomerate Kawasaki Heavy Industries. Its sole operator is the Japan Air Self-Defense Force (JASDF), in part due to historic ...

and U-4 aircraft. There is a "Silver Impulse" T-4 acrobatic team that performs during the annual Iruma Air Show. The name is derived from the official JASDF aerobatic team,

Blue Impulse (currently 11 Squadron 4th Air Wing, previously 21 Squadron 4th Air Wing) is the aerobatic demonstration team of the Japan Air Self-Defense Force (JASDF). The team was founded in 1960 as a team of six F-86 Sabres. They changed mounts to the Mi ...

, and the fact that most of the pilots are aged 50 or over.

Tail markings

The squadron's aircraft tail markings are an arrow shape made of red, yellow and blue lines.

Aircraft operated

Kawasaki T-4, Japan - Air Force AN2276800

* Beechcraft Queen Air 65 (replaced by U-4) *

* U-4

References

Units of the Japan Air Self-Defense Force {{Japan-mil-stub