| Owner: | Union Pacific Railroad Company |
| Type: | Centerbeam Flat |
| AAR Class: | FBC: Flat car constructed with a center beam above the car deck from bulkhead to bulkhead. |
| AAR Type: | F483 |
| Detail Info: | Flat Car, Load Limit: 200,000lb and greater, Inside length: 60-75ft |
| Plate: | C |
| Max Gross Weight: | 286000 |
| Load Limit: | 223300 |
| Ext L/W/H: | 81' 0" / 10' 7" / 15' 5" |
| Int L/W/H: | 73' 0" / 9' 7" / 0' 0" |
| User Notes: | ex-ATW 55079 exx-CP 318481 |
