Rolls-Royce has won a $5bn order for Trent engines and long-term TotalCare service support from Delta Air Lines to power 50 new aircraft.
Trent XWB engines will power 25 Airbus A350s and Trent 7000 engines will power 25 Airbus A330neo aircraft.
Nat Pieper, Delta Air Lines, Vice President of Fleet Strategy and Transactions, said: "We are pleased to be working closely with Rolls-Royce to power aircraft that will be a vital part of our future, providing a new level of excellence on our Pacific, Atlantic and Latin American routes."
John Rishton, Chief Executive, Rolls-Royce, said: "We are proud to be selected to power Delta's new generation of aircraft and look forward to deepening our relationship with a long-standing and valued customer. It is further evidence of the success of the Trent XWB in the market and represents a powerful vote of confidence in our newly-launched Trent 7000.