# Standard H-2

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The **Standard H-2** was an early [American](/source/United_States) [Army](/source/United_States_Army_Air_Corps) [reconnaissance aircraft](/source/Reconnaissance_aircraft), ordered in [1916](/source/1916_in_aviation). The H-2 was built by the [Standard Aircraft Corporation](/source/Standard_Aircraft_Corporation), and previously known as the **Sloane H-2**. It was an open-cockpit three-place [tractor](/source/Tractor_configuration) [biplane](/source/Biplane), powered by a 125 hp (90 kW) [Hall-Scott](/source/Hall-Scott) A-5 engine. Only three were built.

An improved version, the **H-3**, with the same engine, earned an order for nine aircraft, while the [Navy](/source/United_States_Navy) ordered three with [floats](/source/Float_(nautical)) as the **H-4H**.

Two Standard H-3s were sold by the US Army to Japan, where a further three were built by the [Provisional Military Balloon Research Association](/source/Provisional_Military_Balloon_Research_Association) (PMBRA) in 1917, powered by 150 hp (110 kW) [Hall-Scott L-4](/source/Hall-Scott_L-4) engines. They were used as trainers between May 1917 and March 1918, although they were considered dangerous.[1]

## Operators

- [Imperial Japanese Navy Air Service](/source/Imperial_Japanese_Navy_Air_Service)

- [United States Army](/source/United_States_Army)
- [United States Navy](/source/United_States_Navy)

## References

**Notes**

1. Mikesh and Abe 1990, p. 55.

**Bibliography**

- Klemin, Alexander and T. H. Huff. ["Course in Aerodynamics and Airplane Design: Part II–Section 1"](http://archive.aviationweek.com/issue/19170215##!&pid=90). *[Aviation](/source/Aviation_Week_%26_Space_Technology)*, Volume II, No. 2, 15 February 1917, pp. 91–92. (Registration required).
- Donald, David, ed. *Encyclopedia of World Aircraft*, p. 854, "Standard aircraft". Etobicoke, Ontario: Prospero Books, 1997.
- Mikesh, Robert C. and Shorzoe Abe. *Japanese Aircraft, 1910-1941*. London: Putnam, 1990. ISBN 0-85177-840-2.

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