| Owner: | Norfolk Southern |
| Type: | Flat Car |
| AAR Class: | FM: Ordinary flat car for general service. This car has flooring laid over sills and without sides or ends. |
| AAR Type: | F403 |
| Detail Info: | Flat Car, Load Limit: 200,000lb and greater, Inside length: 60-75ft |
| Plate: | B |
| Max Gross Weight: | 286000 |
| Load Limit: | 220700 |
| Ext L/W/H: | 64' 7" / 10' 5" / 3' 10" |
| Int L/W/H: | 60' 0" / 10' 5" / 0' 0" |
| User Notes: | ex-NW 300309 |
