Some U.S. allies are almost certainly going to bail out of the F-35 program. Spiraling costs, the ideology requiring VSTOL, and some bizarrely secretive aspects of the JSF project are conspiring to kill the F-35 as a viable option for countries like Canada. A surprising thing is that countries taking part in development are not permitted complete access to program data. The U.S., despite making use of other nations e…
There are two types of F-35 test aircraft: flight sciences jets, which don't have the full avionics suite, but are instrumented for testing things like flutter, flight qualities, weapons testing, etc. -- and mission systems aircraft, which have the full suite of avionics and are thus more encumbered with restrictions. Foreign persons aren't allowed around the mission systems aircraft without an escort, and aren't supposed to even see the panoramic display in the cockpit. But what do you do when it's a night shift and the only flight systems engineer on duty who is officially qualified to perform certain operations is from the UK? You get a piece of foam, cut it to the size and shape of the display, and write "BRIT BLOCKER" on it in sharpie, and use it whenever the Brits are around.
Further absurdity kicked in when some of the first jets built specifically for the UK were tested. Those jets had the full avionics systems, of course, which meant that foreigners couldn't work on them. So the UK engineers weren't even allowed to be around the jets that were to ultimately be owned and operated by the UK.