If a multiline terminal user presses LK 01 (POTS Trunk 01) and dials 911 the calls goes out on POTS Trunk 02 (which happens to be on LK 02). Those two trunks are the only ones in trunk group 1 and that is the trunk group/route their calls are supposed to go out. In PG 14-05 Priority for Trunk 01 is 1 and for Trunk 2 it is 2. When they choose Trunk 1 and dial 911 I need that call to go out on Trunk 1. Why don't it work right? :-)

Ok, here is NEC's explanation:
If you are on a line and dial 911 it looks for an available line and sends the call out on it and hangs up the line you were on. That is the way it is.

So I tell the users not to grab a trunk first but just to dial 911 or 9+911 and the call will go out their line 1 which is what they want.

Now I wander what will happen if you are on a call listening to an auto attendant and you choose option 9 then 1 then 1. Just kidding, there would be no digit analysis going on because the call has already been set up.

Why not just 911, what's the big deal?

The airport somehow records all calls on line 1 only. When they make a 911 call they want it recorded so they press the line key for Line 1 (that seems logical) then dial 911 but the call goes out on line 2. NEC says that's the way it works.
So it is just a training issue at this point but you would think there method would work. Why the heck would it do what it does? NEC suggested playing PG 21-01-12 but that didn't make any dif.
It is what it is.