The latest-generation Boeing 737 MAX, which is powered by LEAP-1B engines, made its maiden flight in Seattle last week. The aircraft is the first to have a jet engine that includes 3D-printed parts.

The flight lasted two hours and 47 minutes, taking off from Renton Field in Renton, WA and landing at Seattle’s Boeing Field.

“Today’s first flight of the 737 MAX carries us across the threshold of a new century of innovation – one driven by the same passion and ingenuity that have made this company great for 100 years,” said Ray Conner, Boeing Commercial Airplanes president and CEO. “We are tremendously proud to begin testing an airplane that will deliver unprecedented fuel efficiency in the single-aisle market for our customers.”

With the other three members of the 737 MAX 8 flight-test fleet currently in different stages of final assembly, the 737 MAX remains on track for first delivery to Southwest Airlines in Q3/15.