Having been rolled out of the paint shop with incorrect registration N507AW (see here
), a few hours later it had been corrected to the correct registration of N504AW as seen in this photo.
This aircraft was ex Air Wisconsin. On 1991-11-19 it was registered N724FE. To Sky Service Belgium 1992-01-16 as OO-FEK, although that lasted only for a couple of months when it went to Mountain Air Cargo / Fedex again as N724FE. Note '731' on the nosewheel door.