There is no dependence on the subsystems in the ATAK helicopter. It's just a temporary dependence on the engine. 1400shp indigenous engine to be delivered in 2020. However, the timetable for the completion of the international certification process is 2026.
The US's problem with the LHTEC engine is directly related to Pakistan. In the long term, the US's blockade of sales to Pakistan is of benefit to China. This is proof of how the US is doing politics in the hands of novices.
In this case, the Turkey-Pakistan relations will not be damaged, but the US will have a huge strategic loss.
Turkey did not win this with deceived anyone. The helicopter was tested under the most difficult conditions and its effectiveness was proven. Now, as we read from the news, the Chinese contestant went to a new arrangement of the deficiencies found, sending a new helicopter for testing. I hope that they will meet Pakistan with an effective solution under the urgent need.
But like I said, this attitude about on US-Pakistan relations, rather than Turkey.