Key TakeawaysBoeing and Korean Air said the carrier would be purchasing up to 50 Boeing wide-body planes.The agreement calls for Korean Air to receive 20 777Xs and 20 787 Dreamliners, with an option to buy 10 more Dreamliners.Boeing has struggled this year as questions have been raised about its quality control procedures. Boeing (BA) and Korean Air announced Monday that the carrier would be buying as many as 50 of the plane maker’s wide-body jetliners. Korean Air will purchase 20 777Xs and 20 787-10 Dreaml ...