https://en.wikipedia.org/wiki/Lockheed_Martin_F-35_Lightning_II#Sensors_and_avionics https://en.wikipedia.org/wiki/Lockheed_Martin_F-35_Lightning... quote: Un

https://en.wikipedia.org/wiki/Lockheed_Martin_F-35_Lightning_II#Sensors_and_avionics https://en.wikipedia.org/wiki/Lockheed_Martin_F-35_Lightning... quote: Unlike previous aircraft, such as the F-22, all software for the F-35 is written in C++ for faster code development. The Integrity DO-178B real-time operating system (RTOS) from Green Hills Software runs on COTS Freescale PowerPC processors.[211] The final Block 3 software for the F-35 is planned to have 8.6 million lines of software code.[212] The scale of the program has led to a software crisis as officials continue to discover that additional software needs to be written.[213] General Norton Schwartz has said that the software is the biggest factor that might delay the USAF's initial operational capability which is now scheduled for April 2016.[214] Michael Gilmore, Director of Operational Test & Evaluation, has written that, "the F-35 mission systems software development and test is tending towards familiar historical patterns of extended development, discovery in flight test, and deferrals to later increments."[215]