21st Fleet Air Squadron (JMSDF)
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| Fleet Air Squadron 21 (HS-21) | |
|---|---|
| 第21航空隊 | |
 | |
| Active | 26 March 2008 |
| Country |  Japan |
| Branch |  Japan Maritime Self-Defense Force |
| Part of | Fleet Air Force, Fleet Air Wing 21 |
| Garrison/HQ | Tateyama Air Base |
| Aircraft flown | |
| Helicopter | SH-60J & SH-60K |
Fleet Air Squadron 21 (第21航空隊, dainijuuichikoukuutai) (which is also referred to as HS-21) is a unit in the Japanese Maritime Self-Defence Force. It is a part of the Fleet Air Force and comes under the authority of Fleet Air Wing 21.[1] Equipped with Mitsubishi SH-60J & SH-60K anti-submarine helicopters, it is based at Tateyama Air Base in Chiba Prefecture.[2][3]