| 13/03/1985 | N504US | roll out. |
| 11/04/1985 | N504US | first flight. |
| 25/04/1985 | N504US | del Northwest Orient Airlines; '5504'; named "City of Los Angeles". |
| 01/10/1986 | N504US | company renamed Northwest Airlines. |
| 24/02/1994 | N504US | bt General Electric Capital Corporation; opb Northwest Airlines on lease. |
| 25/02/1994 | N504US | rgd to Wilmington Trust Company. |
| 00/12/2000 | N504US | at Minneapolis in 1989 Northwest Airlines c/s (repainted after 00/05/200). |
| 22/11/2003 | N504US | at San Fransisco in 2003 Northwest Airlines c/s (repainted after 08/09/2003). |
| 14/11/2005 | N504US | bt Northwest Airlines Inc. |
| 16/11/2005 | N504US | rgd to Northwest Airlines Inc. |
| 29/10/2008 | N504US | Northwest Airlines merged into Delta Air Lines. |
| 22/11/2008 | N504US | arr Marana; for storage. |
| 08/01/2009 | N504US | bt Citicorp. |
| 15/01/2009 | N504US | rgd to Wells Fargo Bank Northwest. |
| 15/07/2009 | N504US | bt Aircraft Solutions A320 LLC, Minneapolis, MN. |
| 30/07/2009 | N504US | rgd to Aircraft Solutions A320 LLC, Minneapolis, MN. |
| 12/08/2009 | N504US | at Walnut Ridge; withdrawn from use. |
| 04/09/2010 | N504US | at Walnut Ridge; withdrawn from use. |
| 00/00/2011 | N504US | scrapping completed |
| 29/12/2012 | N504US | at Walnut Ridge; only cockpit section left; presumably to be used for simulator purposes ... |
