Boeing Co. working on a sale worth roughly $3 billion for 30 aircrafts to Monarch Airlines. Monarch Airlines said no final decision has been made yet. A spokesman for the company said, “Monarch Airlines is at an advanced stage in evaluating a range of options for re-equipping its fleet to enhance the economics of the airline and the standards of service it provides to its millions of customers.” If the sale goes throught it would be a big loss for Boeing’s European competitor Airbus, which is still ahead on the latest generation of aircraft but faces resurgence from Boeing.