| Line number | 0124 |
| Type | 251 |
| Engines | Pratt & Whitney PW2037 |
| Mode S | A69D54 |
| Configuration | F22W19Y141 |
| Name | |
|
| Date | Registration | Remarks |
| 23/01/1987 | N525US | roll out. |
| 24/02/1987 | N525US | first flight. |
| 14/04/1987 | N525US | del Northwest Airlines; '5525'; named "City of Miami". |
| 14/04/1987 | N525US | bt Public Service Resource Corporation; opb Northwest Airlines on lease. |
| 03/02/1997 | N525US | transferred to State Street Bank & Trust Company, Boston, MA; opb Northwest Airlines on lease. |
| 28/01/2003 | N525US | arr Marana; for storage. |
| 14/06/2004 | N525US | rgd to US Bank, Boston, MA; opb Northwest Airlines on lease. |
| 09/10/2004 | N525US | at Marana; stored. |
| 05/03/2005 | N525US | at Marana; stored. |
| 29/12/2005 | N525US | ferried Marana-San Antonio as NWA9754. |
| 20/01/2006 | N525US | at San Antonio in faded old Northwest Airlines c/s; engines inlets taped over with plastic. |
| 06/04/2006 | N525US | ferried Greenville-Minneapolis; after repaint. |
| 00/04/2006 | N525US | in service: |
| 04/07/2006 | N525US | at Minneapolis in 2003 Northwest Airlines c/s (repainted after 21/12/2005). |
| 29/10/2008 | N525US | Northwest Airlines merged into Delta Air Lines. |
| 02/09/2009 | N525US | ferried Minneapolis-Marana as NWA9862; for storage. |
| 27/07/2010 | N525US | ferried Marana-San Antonio; for maintenance. |
| 02/09/2010 | N525US | ferried San Antonio-Victorville; for repaint. |
| 10/09/2010 | N525US | ferried Victorville-Minneapolis as DAL9931 in 2007 Delta Air Lines c/s with "Delta" titles. |
| 14/09/2010 | N525US | in service: Minneapolis-Atlanta as DAL1009. |
| 30/09/2015 | N525US | last service: Atlanta-Los Angeles as DAL2355 (arrived 01/10/2015). |
| 01/10/2015 | N525US | ferried Los Angeles-Marana as DAL9932 (TT: 80112 hours; 35637 cycles); for storage. |
| 09/06/2016 | N525US | at Marana; stored. |
| 00/09/2016 | N525US | bt Delta Air Lines Inc. |
| 16/09/2016 | N525US | rgd to Delta Air Lines Inc. |
