A punts the ball high and deep, angled to the sideline. Unaware of his position on the field, B89 signals for a fair catch with a foot clearly OOB at the B18. A43 tackles him as soon as B89 touches the ball, causing him to muff it back into the field of play, where it is recovered by A87.
I think there's a lot in play here. Fair catch rules (2-4-3-a through C) would make this not a legal catch.
I'm not sure it would be KCI (6-4-1) since B89 is not inbounds (as required by the rule) and therefore can't complete a legal catch.
I'm not sure even fair catch would apply, since it's not a valid catch, although 6-1-5-1-d makes it clear this is a safety foul ('The purpose of the fair catch provision is to protect the receiver who, by
using the fair catch signal, agrees they or a teammate will not advance after the catch.'
The one I am sure of - the ball is dead when B89 touches it, since he is OOB, and A does not get the ball. It's the (potential) fouls I can't wrap my head around... what am I missing?
You've come across another ambiguity in the rules, and, because of the ambiguity, no one other than Shaw can you give you an authoritative answer.
We know the ball is dead the instant B89 touches the ball. The fact that he muffed the catch attempt is irrelevant, because the ball is already dead. Therefore, obviously, there is no ambiguity about the fact that this is not a catch, so there is no issue with tackling/blocking a player that has completed a fair catch. We don't have that. Throw that out the window.
That leaves us with KCI, or a personal foul, with or without targeting. To follow strict reading of the rules, as they are written, this would
not be KCI, since B89 was out of bounds, and 6-4-1 requires that a player be inbounds for KCI to apply. So, if we accept that ruling (which is what Shaw would need to confirm or deny), then we only have a possible personal foul, with or without targeting.
If B89 is tackled with a just routine "wrap-up" and take to the ground tackle, technically, we have nothing, since he isn't committing KCI. Even if B89 is blocked violently without being wrapped up, there is no rule prohibiting a violent block, as long as it doesn't fit 9-1-3 or 9-1-4 targeting rules. And, there is no rule prohibiting the blocking of a player out of bounds by a player who may not be CLEARLY out of bounds, himself, when he makes the block.
So, that leaves us with 9-1-3 and 9-1-4. 9-1-3 can certainly apply, if the tackler 'spears' B89. The biggest ambiguity is whether B89 is to be considered "defenseless," for the purpose of 9-1-4. The 'example' of a player attempting to catch a kick makes no stipulation that he be inbounds. And, it says, "...attempting..." to make a catch. Knowing that the rule is intended for player safety, AND that the rule specifically states that the examples "...include but are not limited to...," if I am put in the situation of having to rule on this in the field, I would, without hesitation, deem B89 to be a defenseless player (another issue that Shaw will need to confirm or deny). Thus, if the other conditions of 9-1-4 are present, we'd have a targeting foul.
Just a side issue, but, if we have either 9-1-3 or 9-1-4, and it goes to Replay, and the RO changes the ruling to NOT targeting, then we would have no foul, at all, unless the fouling player struck B89 with some kind of a blow. If it is a striking foul, and it was flagrant, we could still eject the fouling player (and that would be an ejection, not just a disqualification).