It's surprising the DoD didn't require stockpiles of spares for every electronic component in these phenomenally expensive and long-lived weapon systems. This is after all the one arm of the Federal Government that is both good at logistics and planning, and was able to deliver frozen ice cream and other amenities to the most remote Forward Operating Bases in Afghanistan.
I'm sure they do. They also require double sourcing of components: 2 separate companies at once
I want to know when Apple sold their last PA Semi PWRficient core to the DoD. https://www.eetimes.com/apple-agrees-to-support-p-a-semi-pro...
Man that was such a crushing loss, one of so so so many incredible companies being gobbled up, to steal their value add from the world, to be added to the legion of supplicated talent at the titan's feets.
This industry would be so much healthier, we'd have so much less of all this bullshit, this fuckery, if immortal ultra wealthy companies weren't allowed to forever keep eating their fucking young until there's no one left.
They generally do stock parts. I was able to order a part when I was in the USAF for a near-obsolete machine (which still used core memory!) and it showed up within a week. Still in it's original EMP and environmental-proof packaging from the late 1960's.
Aircraft can get their service life extended a couple of times before they're parked for good (the B-52 is an extreme example). And the supply system eventually runs out. First of replaceable modules, then the boards, and now the chips.