During the testing phase, the test pilots complained about the power problems of the aircraft, an issue that apparently knocked it out of the running, because when the winners were announced to progress on to the final selection phase, Hughes OH-6 was selected.
During the testing phase, the test pilots complained about the YOH-4 being underpowered (it used the 250 shaft horsepower T63-A-5). An issue that apparently knocked it out of the running, because when the winners were announced to progress on to the final selection phase, Hughes OH-6 was selected.