The Mitsubishi Aircraft SpaceJet regional jet program is focusing on reviewing flight-test data to prepare for an eventual return to flight.

Planned restructuring of the grounded development program continues, a company representative said.

Engineers have data from 3,900 hr. of flying that was conducted before a decision in May to keep prototypes on the ground. The main flight-testing base, at Moses Lake, Washington was closed and the prototypes there mothballed.

The data is being validated and evaluated against targets and expectations, the representative said. The aim is to ensure Mitsubishi Aircraft is “prepared to build the most efficient plan to achieve TC [type certification].”

Under instructions from majority owner Mitsubishi Heavy Industries (MHI) to cut costs, Mitsubishi Aircraft has not announced a schedule for returning to flight. In any case, there is little demand in the wrecked market for commercial aircraft.

“After we complete our restructuring, we will rebuild the plan to achieve TC,” the representative said. “Any personnel changes being made as part of our reorganization are aimed at building an appropriate organizational structure to support our new direction and focus, and to realign resources to help us endure this crisis.”

The personnel changes were not detailed.