The 2S entered production in 1984 .
With the WT - 11 single - seat ultralight in production , Talanczuk produced the design for the planned Chinook two - seat trainer , which was designated as the Chinook 2S ( 2 seater ) .
The Chinook 2S entered production in 1984 .
With the WT - 11 single - seat ultralight in production , Talanczuk produced the design for the planned Chinook two - seat trainer , which was designated as the Chinook 2S ( 2 seater ) .