I'm basing this list on relevance of each to the whole industry and its potential place in history. I'd say here are the top 5:
/US merger (I don't think two airlines of such size have ever combined equally - AA
/TW was moreso a takeover)
/NW BK same day annoucements - wierd how two giants would annouce such as thing on the same day.
3a. All the crashes around the world that seemed to come within two weeks of each other - the ones in Kenya, Greece, and South America - highlights the danger of foreign travel (by which, I mean, the less industrialized nations' airlines that utilize older out of date aircraft).
at Midway - WN
's first fatality, and I wouldn't be a bit surprised if they took a serious look at their operating practices and made some noticable changes.
mx strike - created a very sizeable dent in NW
's operation for awhile
5. The AF YYZ
crash - I don't think it's number one, simply because even though it does highlight a remarkable performance by the crew and the airplane design to get everyone out safely, the long term effects of the story are minor.
Let the debate begin
"Just because I know how to get off a freeway doesn't mean I know how to get back on!" - Retard Joe