15 May 1947: First flight, at Muroc AFB. April/48: TOS USAF. Used in extensive engine testing program with one engine being changed to a J47. When the clear plastic nose began to crack from variations in temperature at high and low altitudes, mechanics fashioned a durable replacement made from plywood, which is still on the plane. The plane flew in the test program until late 1953. 1954: Paul Garber Restoration Facility, National Air Museum, Silver Hill, MD. 2010: Transported to the National Museum of the USAF where it remains stored at the restoration facility.

15 May 1947: First flight, at Muroc AFB. 4/48: TOS USAF. Used in extensive engine testing program with one engine being changed to a J47. When the clear plastic nose began to crack from variations in temperature at high and low altitudes, mechanics fashioned a durable replacement made from plywood, which is still on the plane. The plane flew in the test program until late 1953. 1954: Paul Garber Restoration Facility, National Air Museum, Silver Hill, MD. 2010: Transported to the National Museum of the USAF where it remains stored at the restoration facility.

15 May 1947: First flight, at Muroc AFB. 4/48: TOS USAF. Used in extensive engine testing program with one engine being changed to a J47. When the clear plastic nose began to crack from variations in temperature at high and low altitudes, mechanics fashioned a durable replacement made from plywood, which is still on the plane. The plane flew in the test program until late 1953. 1954: Paul Garber Restoration Facility, National Air Museum, Silver Hill, MD. 2010: Transported to the National Museum of the USAF where it remains stored at the restoration facility.

The XB-43 was a pure jet version of the XB-42. This a/c was the second of two built, and was designated YB-43. It first flew on 15 May 1947. Given the name "Versitile II by the ground crew, it spent its time being used as a test bed a/c with one General Electric J35 engine replaced with a J47 jet engine undergoing flight testing. Retired in 1953, it was donated to the Smithsonian Museum in 1954. In 2010 it was transferred to the USAF Museum and is currently in the restoration hangar and not on display.

The Douglas XB-43 Jetmaster was a jet development of the XB-42 Mixmaster. Two examples were built. This second airframe, designated YB-43, flew as an engine testbed with one J35 and one J47 engine. It survives and was transferred to the restoration hangars of the USAF Museum in Dayton, Ohio, in 2010. Photo from: Toronto Star