Dutch twin-engined medium bomber, with the prototype first flying only after the German invasion of Poland.
After Fokker's loss of civil contracts to Douglas's all metal DC aircraft, Fokker belatedly "got with the times" and switched to all metal construction for the T.IX. A minor gear collapse during landing led to the aircraft being grounded for repairs, where it was still being worked on as the German's invaded.
The T.IX was designed to replace the outdated Martin B-10's in the East Indies, but no orders had been confirmed by the time of the invasion. The aircraft was never repaired and was probably scrapped.