| Line number | 0190 |
| Type | 251 |
| Engines | Pratt & Whitney PW2037 |
| Mode S | A6B5F7 |
| Configuration | F22W19Y141 |
| Name | |
|
| Date | Registration | Remarks |
| 1807/1988 | N531US | roll out. |
| 12/08/1988 | N531US | first flight. |
| 25/08/1988 | N531US | del Northwest Airlines; '5531'; "City of Newark". |
| 26/08/1988 | N531US | bt ITC Leasing Corporation; opb Northwest Airlines on lease. |
| 04/02/1997 | N531US | bt State Street Bank & Trust Company; opb Northwest Airlines on lease. |
| 20/10/2004 | N531US | rgd to US Bank, Boston, MA; opb Northwest Airlines on lease. |
| 22/10/2004 | N531US | at Phoenix in 2003 Northwest Airlines c/s (repainted after 28/07/2004). |
| 10/02/2006 | N531US | last service: Seattle-Minneapolis as NWA164. |
| 13/02/2006 | N531US | ferried Minneapolis-Marana as NWA9750 (TT: 58361 hours; 24151 cycles); for storage. |
| 20/02/2006 | N531US | at Marana; stored. |
| 16/05/2006 | N531US | ferried Marana-Minneapolis as NWA9750. |
| 18/05/2006 | N531US | in service: Minneapolis-Las Vegas as NWA777. |
| 29/10/2008 | N531US | Northwest Airlines merged into Delta Air Lines. |
| 13/06/2010 | N531US | at San Francisco In 2007 Delta Air Lines c/s with "Delta" titles (repainted after 20/09/2009). |
| 07/02/2011 | N531US | rgd to Delta Air Lines Inc. |
| 24/09/2014 | N531US | last service: Orlando-Atlanta as DAL2545. |
| 25/09/2014 | N531US | ferried Atlanta-Marana as DAL9950 (TT:81270 hours; 35142 cycles); for storage. |
| 31/01/2016 | N531US | at Marana/MZJ; missing both engines; all usable parts removed; still standing on landing gear. |
| 31/07/2016 | N531US | at Marana/MZJ. |
| 00/00/2017 ? | N531US | scrapping completed. |
| 06/12/2018 | N531US | registration cancelled. |
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