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3/26/2026
 
 
 
 
 
Owner: Union Pacific Railroad Company
Model:Rebuilt GE CM44ACBuilt As:UP 6600 (AC44CW)
Serial Number:49838Order No:1874
Frame Number:Built:4/1997
Notes:Wabtec Rebuild C44ACM
Other locos with this serial:  UP 6600(AC44CW) UP 6600(CM44AC)
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M370
Title:  M370
Description: 
Photo Date:  4/5/2025  Upload Date: 4/12/2025 11:42:35 PM
Location:  Point of Rocks, MD
Author:  Shenandoah Railfan
Categories: 
Locomotives:  CSX 5408(ES44DC) UP 6600(CM44AC) UP 7215(AC44CW)
Views:  518   Comments: 0
Not only dont you get far, it takes all day to do it
Title:  Not only dont you get far, it takes all day to do it
Description:  We were on our way to an early lunch in town, and encountered this southbound AEPX train coming into Siloam Springs. We got a couple shots at Jefferson St, and went on. He was still there when we retunred 90 minutes or so later. UP 6600 is framed by the crossing signals.
Photo Date:  2/6/2026  Upload Date: 2/9/2026 6:21:34 AM
Location:  Siloam Springs, AR
Author:  Tom Beckett
Categories:  Signal,Action
Locomotives:  UP 6600(CM44AC) CP 8753(ES44AC)
Views:  33   Comments: 0
Remember this train??
Title:  Remember this train??
Description:  The coal train we saw on our way to lunch turns out to be the southbound I heard, now approaching the south end of Watts as the 181 rolls up the siding to the meet.
Photo Date:  2/6/2026  Upload Date: 2/9/2026 6:37:01 AM
Location:  Watts, OK
Author:  Tom Beckett
Categories:  Scenic,Action
Locomotives:  UP 6600(CM44AC) CP 8753(ES44AC)
Views:  44   Comments: 0
By a nose
Title:  By a nose
Description:  Close up of the UP leader on the AEPX train, its UP wings taking slowly to flight
Photo Date:  2/6/2026  Upload Date: 2/9/2026 6:37:56 AM
Location:  Watts, OK
Author:  Tom Beckett
Categories:  Action
Locomotives:  UP 6600(CM44AC)
Views:  38   Comments: 0
Wider view
Title:  Wider view
Description:  The coal train rolls across Jefferson St in this wider view of the power. Hell be here a while...stay tuned.
Photo Date:  2/6/2026  Upload Date: 2/9/2026 6:23:37 AM
Location:  Siloam Springs, AR
Author:  Tom Beckett
Categories:  Action
Locomotives:  UP 6600(CM44AC) CP 8753(ES44AC)
Views:  38   Comments: 0
Broadside #1
Title:  Broadside #1
Description:  Broadside view of the UP leader as it poses in front of the feed mill
Photo Date:  2/6/2026  Upload Date: 2/9/2026 6:24:33 AM
Location:  Siloam Springs, AR
Author:  Tom Beckett
Categories:  Roster
Locomotives:  UP 6600(CM44AC)
Views:  37   Comments: 0
UP 6600
Title:  UP 6600
Description:  One of UP’s experimental new scheme C6Ms trails 3rd on an eastbound manifest stopped just west of Tower 55.
Photo Date:  3/14/2026  Upload Date: 3/21/2026 8:43:38 PM
Location:  Fort Worth, TX
Author:  Caleb West
Categories:  Roster
Locomotives:  UP 6600(CM44AC)
Views:  22   Comments: 0


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