Nostalgia & History > Southern Switcher Saturday

Image 1 April 1988 SW1500 79 a former K&IT works the NS yard in Louisville Ky.
Image 2 April 30,1987 a pair of former K&IT SW1500's with a job in the east end of Louisville
Image 3 March 23,1988 MP15DC's 2367,2364 and 2363 return to Ludlow Ky. from Cincinnati 

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Fine stuff!

I realize that I have missed much in life but could someone explain the meaning of the small letter suffix that is attached
​to number of these locos? I have a pictures of a couple of Southern E units that also displayed the small letters. Just wondering.

Charlie

It was called a check code letter and was designed to prevent inaccurate data entries into the computer system.  There was a mathematical formula for determining which of several letters went with a particular road number (the letters were not ramdomly assigned).  If someone entered an engine number incorrectly the computer would recognize it. 
 

cewherry Wrote:
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> I realize that I have missed much in life but
> could someone explain the meaning of the small
> letter suffix that is attached
> ​to number of these locos? I have a pictures of
> a couple of Southern E units that also displayed
> the small letters. Just wondering.
>
> Charlie

http://www.trainorders.com/discussion/read.php?2,3935038,3935051#msg-3935051

and other Trainorders threads too.

Lots of useful information is buried in Trainorders going back at least 13 years when I joined, probably longer. The search feature can be very helpful. Or you can ask, but you'll get more detailed information if you search.

Always appreciate Southern photos.
ALLEN