| Line number | 0447 |
| Type | 222 |
| Engines | Pratt & Whitney PW2037 |
| Mode S | A71778 |
| Configuration | F24PY50Y108 |
| Name | |
|
| Date | Registration | Remarks |
| 18/03/1992 | N556UA | roll out. |
| 10/04/1992 | N556UA | first flight. |
| 23/04/1992 | N556UA | del United Airlines; '5456'. |
| 21/05/1992 | N556UA | bt State Street Bank & Trust Company; opb United Airlines on lease. |
| 23/06/1999 | N556UA | tfd to General Foods Credit Corporation; opb United Airlines on lease. |
| 04/04/2003 | N556UA | ferried Chicago/O'Hare-Goodyear as UAL9877; for storage. |
| 12/04/2003 | N556UA | at Goodyear; stored. |
| 10/06/2003 | N556UA | at Goodyear ; stored. |
| 00/00/2003 | N556UA | ret to service (before 02/11/2003). |
| 26/05/2004 | N556UA | rgd to US Bank, Boston, MA. |
| 02/05/2010 | N556UA | United Airlines agreed with Continental Airlines to merge into United Airlines. |
| 26/09/2010 | N556UA | at Washington/Dulles in 2004 United Airlines c/s with "United" titles (repainted after 17/05/2010). |
| 01/10/2010 | N556UA | United Airlines merged with Continental Airlines into United Airlines. |
| 22/12/2011 | N556UA | at Phoenix in 2010 United Airlines c/s with "United" titles (repainted after 14/08/2011). |
| 23/10/2014 | N556UA | last service: Washington/Dulles-San Francisco as UAL340. |
| 27/10/2014 | N556UA | ferried San Francisco-Goodyear as UAL2143; for lease return and storage. |
| 22/12/2015 | N556UA | bt Wells Fargo Bank Northwest. |
| 15/01/2016 | N556UA | rgd to Wells Fargo Bank Northwest. |
| 07/12/2016 | N556UA | registration cancelled. |
| 19/12/2016 | N556UA | at Goodyear in United Airlines c/s without titles and tail logo partly painted out. |
