C/n 22-7-3-55. This aircraft was originally delivered to the FAA in August 1961 as N112 and used to train FAA flight examiners. In 1974 it was re-registered to N42. The aircraft was sold to Flight Systems in 1980 and it was re-registered to N84700. It was modified by the Navy as an inflight tanker and re-registered to BuNo 161572. In 1995 the aircraft was destroyed in a cargo hold explosion test at NAS Patuxent River, MD.