Brat,
What a piss dripping misery-guts you are George.
Maybe you ought to begin to critique the subject, which is far from perfect and IMHO, will never be perfect because of the mistakes made in the beginning of the program. If you are hung up with the words "development phase", replace it with the words "discovery phase", it's the phase that occurs after when development was done incorrectly.
Currently, the USAF is ordering more replacement wings for A-10 Warthogs as they begin to see through the fog and now are facing reality:
ACQUISITION, AIR, INTEL & CYBER
F-35 Problems: Late IOTE, F-35A Gun Inaccurate, F-35B Tires, Threat Data, Cyber…
By COLIN CLARK on January 26, 2018 at 4:59 PM
From the Behler report:
There’s another important problem which will make it very difficult for the Air Force to argue that it can replace the A-10 with the F-35A, as planned: “The F-35A gun has been consistently missing ground targets during strafe testing; the program is still troubleshooting the problems.” The gun shoots “long, and to the right.” The Marine’s F-35B and the Navy’s F-35C guns, which are not built in, are apparently performing better. “Initial accuracy testing of the F-35B and F-35C podded guns showed better results than that of the F-35A model,” Behler writes. “Both the F-35B and the F-35C gun pods exhibited the same right aiming bias as the F-35A, however the long bias is not manifested in the podded gun systems.”
The other bad news here is that “delays in completing the remaining gun testing and correcting gun-related deficiencies within SDD, especially for the F-35A, are adding risk to the IOT&E schedule,” the report says.