OZDUCK
Established Member
- Joined
- Aug 1, 2010
- Posts
- 3,658
Same system was in use when I was at Perth Airport in the late 1970's. If it aint broke ----. It changed from an older system of putting a ring around a city on the then, many generations ago, pax card which had a map of Australia printed on it.Generally changes with a each shift change, allowing for any cross shift processing. They are a word (or based on)for ease of remembering.