ICAO now requires an "English Proficiency" endorsement. All flight crews must have the endorsement by March 5,2008 to fly international flights. My guess is that most flights will be canceled on March 6,2008.
http://www.faa.gov/other_visit/avia...afety/info/all_infos/media/2008/info08008.pdf
http://www.faa.gov/other_visit/avia...afety/info/all_infos/media/2008/info08008.pdf