Comment by mmooss

You'll never find evidince hard enough to fashion the sort of club people who ask such questions ought to be bludgeoned with.

Do you really think anyone would be so stupid as to leave hard evidince? That's the magic of the whole process, they can do those things fully within the bounds of the process. They decide (or don't), often at the urging of lobbyists, or non-lobbyists parties who themselves typically aren't completely impartial, what they want. And often they have a specific product in mind that they want, but they can't say that so they write the requirement to all but say it.

Often times this is very reasonable and comes as the result of the end user having used multiple products or having used multiple contractors and knowing from experience with near certainty what or who they want.

In the alternate case where it's pork, this is often how upstarts get their start. Whoever the prime is doesn't wanna pay out the ass for someone else's pork that's been inserted into the requirements so connections get leveraged and several dominoes later a subcontractor to someone is under contract + NDA to buy a controlling stake in an idling paper mill and refit as necessary the small town's wastewater plant it dumps into because that is how they are going to provide the filter media meeting the performance specified in the requirements without being forced to pay out the ass for the product the lobbyists ghost wrote into it. The prime has basically entered into contract to create a company making a competing product out of thin air. There are many funny stories like this kicking around the beltway.

The "special casing" of "operational capability" is public fact - USMC decided to claim initial operational capability on aircraft that didn't even have complete SMS (stores management system), something that was missing even after first "front line" USAF units got theirs. Block 2 software had only minimal air-to-air and air-to-ground capabilities implemented. Block 3 was the infamous one with constant reboots, with Block 3F the first planned to provide full not just weapons capability, but even flight envelope. Heck, in 2015, they barely lifted limitations on attitude and acceleration/wing loading after finally testing them in flight.

Conflicts between requirements of -A/-C and -B, among other reasons due to weight, were discussed as far and wide as GAO reports, because like with F-111, there was strong political push for maximum commonality, which resulted in cascading issues - for example, -B added 18 months around 2004 to -A and -C when the fuselage ended up too heavy for -B to operate with any equipment, and extensive rework had to be done on all models to shave ~1200kg. By 2010 there was discussion to cancel -B altogether.

On a topic closer to typical fare on HN, ALIS (IIRC now renamed to ODIN, but awarded back to the same team...), the ground support system critical to even running the airplane, was close to useless in 2015. Something that anyone with experience with that part of Lockheed probably expected and were not listened to.

Ultimately the aircraft is probably pretty good (I am saying probably because some crankiness isn't much talked unless you're actually embedded with users of such hardware, and is secret - there I have only my suspicions), but the road there was more painful than it should be - and ofc I would not trust it if I was foreign buyer for reasons of not just software black boxes but also dependency on US-located labs to provide mission data updates - at least I have not heard of that aspect changing. We used to joke it was first aircraft with "phone home" license system...