after the flight test program, the two aircraft were stored at the amarc, located at davis-monthan air force base. one aircraft (72-1875) was subsequently moved to the nearby pima air & space museum in 1981, but was returned to flying status by mcdonnell douglas in 1996; and was first reflown on 11 april 1997. on 16 april 1997, the aircraft was ferried to long beach, california to support the c-17 program. on 11 july 1998, the aircraft suffered a massive failure of the no. 1 engine during flight and made an emergency landing at palmdale, california. on inspection, the aircraft was deemed too expensive to repair and was stored at palmdale. in 2008, the aircraft was moved by road to edwards afb, where it is now on display at the air force flight test center museum's "century circle" display area, just outside the base's west gate. the other airframe (72–1876), which had remained on celebrity row at the amarc for many years, was destroyed in place in april 2012.