The aircraft with manufacturer serial number 18355 and line number 231 is a Boeing 720-051B. It had its maiden flight on 1961-08-23. The last recordered registration was SX-DBI. The airframe is scrapped.
History:
Northwest, from 31st of August 1961, registered as N725US Olympic Airways, from 19th of April 1972, registered as SX-DBI