The plane is being built with the most sophisticated stealth technology, but initial flight tests have turned up hot spots and cracks associated with metal and composites used on most new aircraft. The development of the software controlling the F-35’s major warfighting functions, the most complex ever planned for an airplane, has been delayed so that the last block will not be introduced to the aircraft until at least June 2015.
Earlier this month, Vice Adm. David J. Venlet, executive officer for the F-35 program, said in an interview with the online service AOL that he recommended slowing down current production lines to reduce the replacement costs that will be necessary in aircraft produced before testing is completed.
Production had already been slowed twice. Then-Defense Secretary Robert M. Gates pushed back the building of 122 aircraft in February 2010 as problems became apparent, and again in January as he lowered near-term production for another 124 planes, boosting future production needs.
Sen. John McCain (R-Ariz.) took the Senate floor on Dec. 15 and described the F-35 fighter program as “a mess.”
What upset the senator was not just that the cost of each plane had risen nearly 100 percent from its original estimate of $69 million to $133 million today, or the fact that testing was only 20 percent complete while more than 90 planes had already been bought, or the fact that software — key to 80 percent of the stealth plane’s warfighting capability — wouldn’t be ready for another four years.
It was, he said, that the Pentagon had “sold this program as a fifth-generation strike fighter that would — more so than any other major defense procurement program — be cost-effectively developed, procured, operated and supported.”
McCain faulted the Pentagon for using what he called “a concurrent development strategy to procure a high-risk weapon system.” Production of the first airplanes began as testing was in its infancy.
McCain said the Pentagon was attempting “generational leaps in capability” but at the same time moving before the underlying design was stable. Developing needed technologies and being able to integrate them remain risky and manufacturing processes are still “immature,” he said.
A Government Accountability Office report from April said the forecast was for “about 10,000 more [engineering design] changes through January 2016.” The GAO added, “We expect this number to go up given new forecasts for additional testing and extension of system development until 2018.”