Harteveldt says he would have surmised that the transition from signing a letter of intent in August to reaching a definitive agreement would have been completed by now because American Airlines is known to be very carefully about going public with these sorts of preliminary agreements unless there is a strong expectation that the basic terms are wrapped up. Ninety to 120 days typically is an adequate period to move from a letter of intent to a final agreement, Harteveldt says, although he acknowledges that the scope of a host system transition can be a different animal.

Read the full story at http://www.tnooz.com/2010/01/20/news/american-airlines-still-hasnt-signed-jetstream-agreement-with-hp/