The report pointed out that the Pentagon and Lockheed Martin were not able to follow the “Block 4” software and hardware modernization plan of the F-35 warplanes, and that the “unrealistic program” caused delays as well as $ 2 billion in additional costs.
In the report on the program, which has lasted for nearly 20 years and has cost 398 billion dollars so far, it was emphasized that Lockheed Martin and the Department of Defense have not updated their estimates for future deliveries of F-35 fighter jets, reflecting previous delays.
“The F-35 program has been in the development of Block 4 for more than three years, but has not offered new capabilities as planned. The program is not based on the latest available data as planned and is not available. ”The report pointed to concerns about the” life cycle “cost of the F-35 program of approximately $ 1.72 trillion, which includes purchasing, maintenance and operations that would last for decades.
The report noted that the current estimated cost of the Block 4 program is $ 14 billion, more expensive than the land, naval and air force acquisition programs in the US military.