YAT-37D  Tweety Bird

The YA-37A was modified from the standard T-37B primary trainer to evaluate the design as a counter-insurgency (COIN) attack/reconnaissance aircraft.  First flown in September 1963, the airplane underwent performance and systems evaluation testing during 1964 at Edwards AFB, California, and Eglin AFB, Florida.

Much valuable information was obtained from these tests with regard to future design requirements for COIN aircraft.  One of the aircraft's remarkable features was its ability to carry out a mission with only one engine still operating.

The aircraft pictured here, one of two YAT-37Ds, was retired to the U.S. Air Force Museum in December 1964.  However, it was recalled to active service in August 1966 for final design testing of the A-37 attack aircraft, urgently needed for close air support of ground forces in Southeast Asia.

This aircraft was retired to the Museum for a second time in July 1970 as the YA-37A. 
(NMUSAF)

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