Originally Posted by
Manoa Chris
What's the distinction? Is flight number a major change, but a small time change is not?
There's some interesting reading in a few other places that might help shed some light onto the behind-the-scenes reasons for when a reissue is required:
http://www.flyertalk.com/forum/alask...l#post12195977 (start here and read forward, especially posts #15-18)
http://www.flyertalk.com/forum/ameri...ml#post9255270
http://www.amadeus.com/qa/documents/...0-%20Mar07.pdf (Amadeus instead of Sabre, but the concepts are similar)
http://answers.yahoo.com/question/in...5105517AADe32m (wow, the first useful thing I've ever seen on Yahoo! Answers!

)
http://www.aa.com/i18n/agency/Bookin..._ticketing.jsp (inside look at e-tickets from AA's/Sabre's perspective)
http://en.wikipedia.org/wiki/Electro...th_an_e-ticket,
http://en.wikipedia.org/wiki/Passenger_Name_Record,
http://en.wikipedia.org/wiki/Record_locator,
http://en.wikipedia.org/wiki/Boarding_pass,
http://en.wikipedia.org/wiki/Airline...tion_.28PNR.29 (a couple of other random Wikipedia articles)