| 20/06/1985 | N509US | roll out. |
| 25/07/1985 | N509US | first flight. |
| 04/10/1985 | N509US | del Northwest Orient Airlines; '5509'; named "City of Anchorage". |
| 04/10/1985 | N509US | bt Westinghouse Credit Corporation; opb Northwest Orient Airlines on lease. |
| 01/10/1986 | N509US | company renamed Northwest Airlines. |
| 04/12/1996 | N509US | on a flight from San Francisco to Detroit, the airplane had been cleared to descend from FL410 to FL230. The ATC controller amended the the clearance to FL270 so the flight would have a better 'ride'. Shortly after leveling off at FL270, 25 Nm east of Grand Rapids, Michigan, sudden, moderate, turbulence was encountered. A passenger who was exiting the lavatory at the time fell and was seriously injured. The flight crew stated the weather radar did not show any weather on the 80 mile scan. The seat belt sign had been illuminated about 5 minutes before the turbulence encounter and the captain made an announcement for the passengers to expect 'bumps' on the approach. The airplane's lavatories are equipped with an public address speaker, a flight attendant call button and a 'return to seat' sign that is illuminated when the cabin seat belt sign is activated. The company's dispatch/weather department weather data showed the airplane had been flying in an area of 3/10's coverage of level 3 and 4 thunderstorms. |
| 00/02/1997 | N509US | transferred to State Street Bank & Trust Company; opb Northwest Airlines on lease. |
| 21/12/2003 | N509US | at San Francisco in 2003 Northwest Airlines c/s (repainted after 07/07/2003). |
| 15/01/2004 | N509US | bt Northwest Airlines Inc. |
| 16/01/2004 | N509US | rgd to Northwest Airlines Inc. |
| 14/08/2008 | N509US | arr Marana; for storage. |
| 29/10/2008 | N509US | Northwest Airlines merged into Delta Air Lines. |
| 08/01/2009 | N509US | bt Citicorp North America Inc. |
| 15/01/2009 | N509US | rgd to Wilmington Trust Company. |
| 02/07/2009 | N509US | ferried Marana-Orlando/Sanford; for part-out and scrapping. |
| 06/07/2009 | N509US | bt GA Telesis LLC. |
| 03/10/2009 | N509US | at Orlando/Sanford; missing forward cargo hold door and radar cone. |
| 21/10/2009 | N509US | at Orlando/Sanford; missing both engines, both cargo hold doors and all doors. |
| 00/00/2009 | N509US | scrapping completed. |
| 03/06/2010 | N509US | registration cancelled. |
