| Line number | 0068 |
| Type | 251 |
| Engines | Pratt & Whitney PW2037 |
| Mode S | A655C4 |
| Configuration | F22W19Y141 |
| Name | |
|
| Date | Registration | Remarks |
| 31/05/1985 | N507US | roll out. |
| 27/06/1985 | N507US | first flight. |
| 22/07/1985 | N507US | del Northwest Orient Airlines; '5507'; named "City of Seattle". |
| 22/07/1995 | N507US | bt First National Bank of Boston, Boston, MA; opb Northwest Orient Airlines on lease. |
| 01/10/1986 | N507US | company renamed Northwest Airlines. |
| 03/02/1997 | N507US | transferred to State Street Bank & Trust Company; opb Northwest Airlines on lease. |
| 06/04/2000 | N507US | at Minneapolis in 1989 Northwest Airlines c/s. |
| 15/01/2004 | N507US | bt Northwest Airlines Inc. |
| 16/01/2004 | N507US | rgd to Northwest Airlines Inc. |
| 29/03/2004 | N507US | at Phoenix in 2003 Northwest Airlines c/s (repainted after 22/09/2003). |
| 29/10/2008 | N507US | Northwest Airlines merged into Delta Air Lines. |
| 12/08/2010 | N507US | at Atlanta in 2007 Delta Air Lines c/s with "Delta" titles. |
| 30/09/2013 | N507US | last service: Fort Lauderdale-Atlanta as DAL1527. |
| 01/10/2013 | N507US | ferried Atlanta-Blytheville as DAL9933; for part-out and scrapping. |
| 25/03/2015 | N507US | at Blytheville in basic Delta Air Lines c/s without titles and tail logo. |
| 15/07/2015 | N507US | at Blytheville; withdrawn from use. |
| 00/00/2018 | N507US | scrapping completed. |
| 29/03/2018 | N507US | registration cancelled. |
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