Unfortunately the shared parts ratio is far lower than what was planned. It was supposed to be 80% commonality between variants but it's more like 25%. Furthe

Unfortunately the shared parts ratio is far lower than what was planned. It was supposed to be 80% commonality between variants but it's more like 25%. Furthermore, because they tried to make the aircraft meet contradictory requirements it has resulted in a plane that doesn't do several things as well as even the aircraft it is replacing, much less newer aircraft on the battlefield. All at an astronomical cost. At a certain point it just doesn't make sense to pay far more for a weapons system that doesn't do anything well.