One of the things that help kill the Cheyenne was that it had a very low degree of maintainability. It had the complexity of a Century series fighter and the Army mechanics were completely unable to maintain it. The Army did not learn its' lesson because the Apache was even more complex and it too had a very low degree of maintainability.
To: 46Driver
The Army and Air Force were constantly arguing about what types of aircraft the Army could fly and the missions performed by the Army that were normally performed by the Air Force.