key 4dKey interpolation Auto tangents A, T 1 Break tangents B, T 2 Zero angle (tangent) 0, T 3 Zero length (tangent) L, T 4 Clamp C, T 5 ar ALT + L, T 6 Step ALT + T, T 7 Soft ALT + S,Textron Aviation has reached a key stage in the development of the Cessna Citation CJ4 Gen3, with the successful maiden flht of its second