Originally Posted by
UserMark
Wow, thank you so much for that, it's really interesting. Now I understand half of what I'm seeing. Maybe someone can fill in the rest, and I hope others find this info useful too. I looked at the routing rules for a DONE3 from CAI. There are 4 options, and this is one of them:
220-*O-210/220-*O-210/220-*O-310/320/330/350-*O-310/
320/330/350-*O-310/320/330/350-*O-310/320/330/350-*O-
310/320/330/350-*O-000/140/160-*O-000/140/160-*O-000/
140/160-*O-000/140/160-*O-000/140/160-*O-000/140/160-
*O-*PA-*O-*LY-*O-*LY-*O-220
Now I know what the 3 digit codes are, but what are things like *O, *PA, and *LY ?
*O means oneworld. This one I know for sure.
I believe *PA and *LY mean Panama and Libya, respectively. They are specifically written out because Panama is part of North America for xONEx purposes but part of South America according to IATA, while Libya is part of Middle East for xONEx purposes but part of Africa according to IATA. Note the routings list "allowed" points (except origin and final destination), not points you have to travel through. There are 499 (not 4) allowed routings for an ex-CAI DONE3. You cannot mix and match from these 499 possibilities, but you can skip any point in between.