After the WWII, the YS-11 was manufactured in Japan,as the first domestic products of turboprop passenger plane.
The maiden flight of the YS-11 was in August, 1962, and 182 planes were manufactured.
Since then, it had been in service for 40 years or more, but YS-11 was retired by the domestic airlines in September, 2006 because of a new aviation rule, requiring collision avoidance radar.
However, the YS-11 continues in service with the JSDF because the civil aviation rule is not applied in JSDF. The YS-11 airframe is still very reliable.
Ten YS-11 were put into service in the JMSDF, 13 in the JASDF.
When the YS-11, was converted to the YS-11EA , the engines used for the YS-11E type whic was the ECM training plane, were changed from the Rolls-Royce Dart engine into the Alison T64-IHI-10J engine and "Made to super-YS".
The YS-11EB type is an plane that was a remodeled YS-11C to the ELINT plane. In addition, it is was "Made to a super-YS".
