Originally Posted by
oliver2002
See the entry in the wiki, AI 001-299 and AI 900- are international flights. BOM-GOI sometimes is one of those. 9W doesn't have this system at all.
I think this system was extremely chaotic and could result in issues. IMHO it is better
to design the process to avoid any exceptions. In the US all international arrivals
regardless of final destination are processed at the first port of entry. This makes
it easier for Airline staff, Airport staff and passengers...