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From 1919 until 1924, the United States Army Air Service used a system to designate the types of aircraft it was operating, based on role and specific characteristics of the aircraft. When first instituted, roman numerals were used to number the designations in use. These numerals were only applied to the first 15 types before being abandoned. Aircooled and Watercooled refer to the engines installed, while Pursuit was the name given to fighter aircraft in the US Army, at that time. The system was clumsy, and quickly became unworkable, being replaced by the 1924 United States Army Air Service aircraft designation system.

List of designationsEdit

NumeralCodeType of AircraftDates in use
IPWPursuit, Watercooled1921-1928
IIPNPursuit, Night1921
IIIPAPursuit, Aircooled1922
IVPGPursuit, Ground Attack1922
VTPTwo-seat Pursuit1922
VIGAGround Attack1920-1922
VIIILInfantry Liaison1919
VIIINONight Observation1925
IXAOArtillery Observation1924
XCOCorps Observation1922-1924
XIDBDay Bombardment1920-1923
XIINBSNight Bombardment, Short Distance1921-1924
XIIINBLNight Bombardment, Long Distance1923
XIVTATrainer, Aircooled1921-1924
XVTWTrainer, Watercooled1920-1923
n/aAAmbulance1919-1925
n/aGGlider
n/aMMessenger1919-1921
n/aPSAlert Pursuit (Special)1923
n/aRRacer1921-1923
n/aSSeaplane
n/aTTransport1919-1923

Source: Bridges[1]

ReferencesEdit

CitationsEdit

  1. Bridges, 2006

BibliographyEdit

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