Boeing and State Corporation Rostechnology have finalised an order for 50 next-generation 737 airplanes along with purchase rights for an additional 35.

The order, valued at $3.7bn, includes 15 next-generation 737-700s, 25 737-800s and ten 737-900ERs.

State Corporation approved the definitive agreement, signed in September 2010 during the Sochi Investment Forum in Russia.

Rostechnology 737s will be delivered with the new 737 Boeing sky interior.