Boeing and Delta Air Lines plan to announce a contract for 100 Boeing 737 MAX 10 aircraft at the Farnborough Airshow, which opens today, industry sources told Reuters. The value of the 100 aircraft is about $13.5 billion and the deal will be the largest for Boeing in 10 years. In addition, 10 wide-body cargo planes Boeing plans to order German Lufthansa. Seven of them are the recently released cargo version 777X.