Only aircraft designated after the adoption of the Tri-Service system are listed below.
[7] Designations YF-110 and YF-112 through YF-116 were acquired (captured or purchased) foreign aircraft used for evaluation and aggressor training.
[9][10] Unlike most other categories of aircraft, the introduction of the tri-service designation system in 1962 did not result in a wholesale redesignation of helicopters.
Only aircraft designated after the adoption of the Tri-Service system are listed below.
In addition to aircraft intended to support military operations, the unified system includes experimental craft designed to push the boundaries of aeronautical and aerospace knowledge.