One Aviation recently completed the first flight of the proof-of-concept wing for the Eclipse EA700 now under development.

An EA500’s wing was modified to match the length and shape of the EA700’s, which include a 4-ft. increase in span and reshaping of the inboard airfoils.

“This is a key milestone in the path to making a very good airplane a great airplane,” One Aviation CEO Alan Klapmeier said.

During the 1.5-hr. flight on Sept. 1, flight-handling qualities were evaluated during transitions between all configurations, and maneuvering and basic aircraft flying qualities were evaluated at altitudes of up to 15,000 ft. The aircraft performed “flawlessly,” the company said, and all test condition results were as expected.

The upgraded aircraft will have a longer wing, with 2-ft. extensions on each side to hold more fuel than the Eclipse 500/550. The Eclipse 700 will also have a stretched fuselage for more cabin volume. The new aircraft will be powered by Williams International FJ33 engines and come equipped with Garmin G3000 avionics.

One Aviation said in July that it had taken about 30 orders for the aircraft, not counting orders from China. Price is expected to be in the $3.6 million range.