Boeing Commercial Airplanes fourth-quarter revenue increased to $14.7bn and full-year revenue increased to a record $53bn on higher delivery volume. Fourth-quarter operating margin improved to 10.3% and full-year operating margin grew to 10.9% on the higher volume, favorable delivery mix and continued strong operating performance. During the quarter, the company launched the 777X with 259 orders and commitments. During the year, the 787 program completed first flight of the 787-9, successfully launched the 787-10 and began operating at a 10 per month production rate in final assembly. The 737 program delivered at a record production rate of 38 per month and has won nearly 1,800 firm orders for the 737 MAX since launch. In 2013, a record 648 commercial aircraft were delivered. In January 2014, the company reached an eight-year contract extension through 2024 with the International Association of Machinists & Aerospace Workers District 751 (IAM). Commercial Airplanes booked 465 net orders during the quarter and 1,355 during the year. Backlog remains strong with 5,080 airplanes valued at a record $374 billion.