First DC-9 series 50. First flew as N54641 in 1974. To Swissair as HB-ISK in 1975 then to Hawaiian Airlines as N669HA in 1986. Withdrawn from use at Mojave, CA in 2001. Had a big hole blown into it to test/demonstrate the effects of explosive decompression for the TV program Mythbusters in 2004. Remains scrapped.