In a message dated 9/30/2003 8:36:44 PM Pacific Daylight Time, damiross2@xxxxxxxxxxx writes: << It would require new certification Airlines with large fleets of 737's wouldn't buy (no commonality with current fleet) If it ain't broke, don't fix it >> That explains that. It is interesting the Boeing made that deal. They must have made a deal that keeps the engines from being priced too high