NS 7502
| Uprated from 4,000 to 4,400 horsepower |
ES44DC
| 54247 | 1 | 202126 |
NS 7521
| Upgraded from 4000hp. |
ES44DC
| 56448 | 2 | 212194 |
NS 7538
| Upgraded |
ES44DC
| 56465 | 2 | 198477 |
NS 7546
| Uprated from 4,000 to 4,400 horsepower |
ES44DC
| 56473 | 1 | 208817 |
NS 7552
| Uprated from 4,000 to 4,400 horsepower |
ES44DC
| 56479 | 1 | 209333 |
NS 7556
| Uprated from 4,000 to 4,400 horsepower |
ES44DC
| 56483 | 1 | 209324 |
NS 7560
| Upgraded from ES40DC |
ES44DC
| 56487 | 3 | 189914 |
NS 7562
| Upgraded |
ES44DC
| 56489 | 1 | 196924 |
NS 7575
| Upgraded from ES40DC |
ES44DC
| 56984 | 1 | 190103 |
NS 7595
| Uprated from 4,000 to 4,400 horsepower |
ES44DC
| 57004 | 1 | 208945 |
NS 7601
| Upgraded from ES40DC.blt 7/2006, in svc. 22Aug.2006, Frame/Order#1996--90 |
ES44DC
| 57010 | 1 | 190051 |
NS 7614
| Uprated from 4,000 to 4,400 horsepower blt Oct.2006, in svc. 9 Nov.2006 |
ES44DC
| 57840 | 1 | 208927 |
NS 7629
| Uprated from 4,000 to 4,400 horsepower |
ES44DC
| 57856 | 1 | 207701 |
NS 7643
| Upgraded to 4400 hp |
ES44DC
| 57869 | 1 | 209419 |
NS 7651
| Upgraded in 2014 |
ES44DC
| 57878 | 1 | 204807 |
NS 7654
| uprated from 4,000 to 4,400 horsepower between October 2013 and August 2014 |
ES44DC
| 57881 | 2 | 210465 |
NS 7668
| |
ES44DC
| 57894 | 1 | 209470 |
NS 7702
| Rerated to 4400 HP 11/2013 |
ES44DC
| 58426 | 1 | 192696 |
NS 7715
| Upgraded Dec 2013 |
ES44DC
| 58439 | 1 | 193466 |
NS 7717
| |
ES44DC
| 58441 | 1 | 212046 |