Play clock following B's helmet or injury

[Morningrise]

After B99's helmet comes off during a down, what is the play clock status if the only other event that caused the clock to stop was...

a) ... a punt muffed by B and legally recovered by A?
b) ... a defensive holding foul?
c) ... an offensive holding foul?
d) ... an unsuccessful two-point conversion?
e) ... nothing, but the referee subsequently calls for a measurement before the play clock has started?
f) ... time expiring in the first or third period?

and so on. Are these all 40 seconds, all 25 seconds, or are some of them different? 3-2-4 does not explicitly state which, if any, of these administrative stoppages, which normally set the play clock to 25, are trumped by the defensive helmet/injury.

[Clear Lake ref]

All 25.  The 40 is only if that was the reason it was stopped.

[Kalle]

I think the key is the first sentence in 3-3-9-b: "When the helmet coming off is the only reason for stopping the clock"

If it is not the only reason, then you ignore everything after that in 3-3-9-b, and go with 3-2-4-b and -c.

[Morningrise]

I brought this up because at my association's meeting, someone stated that a B helmet plus a holding foul would result in PC 40 after penalty completion, and the statement was not refuted so I wanted to check and make sure I didn't have it wrong.

I think the key is the first sentence in 3-3-9-b: "When the helmet coming off is the only reason for stopping the clock"

If it is not the only reason, then you ignore everything after that in 3-3-9-b, and go with 3-2-4-b and -c.

I like this logic and it makes sense... except that I can think of situations where the B helmet is not the ONLY reason for stopping the clock, yet the play clock still goes to 40.

B99's helmet comes off and A33 rushes for a first down inbounds: PC 40
B99's helmet comes off and A33 fumbles and B22 recovers: PC 25

In both of those cases, the helmet is not the only reason for stopping the clock, so we presumably go to 3-2-4 and... again, that rule's language is ambiguous as to when we go with 3-2-4-c-13 versus 3-2-4-c-6.

So here's what 3-2-4-c presumably wants to say:

If any NON-injury, NON-helmet 3-2-4-c event happened: PC 25,
OTHERWISE,
If any B injury or B helmet happened: PC 40,
OTHERWISE,
If any A injury or A helmet happened: PC 25.

Accurate?

[ElvisLives]

So here's what 3-2-4-c presumably wants to say:

If any NON-injury, NON-helmet 3-2-4-c event happened: PC 25,
OTHERWISE,
If any B injury or B helmet happened: PC 40,
OTHERWISE,
If any A injury or A helmet happened: PC 25.

Accurate?

Although not totally accurate, it is a reasonable "generality."  It is inaccurate in that it doesn't correctly reflect the Play Clock for a Try, or for the first scrimmage play following a free kick down (both 40 seconds as of 2018).  But, as long as you keep those "exceptions" in mind, your "generality" should work.

Robert