The GN numbered the units 5010–5017 and classified them Y-1. After being involved in a wreck at Tonga, Washington in July 1945, the 5011 was rebuilt with a streamlined appearance and EMD F-unit cabs; the GN reclassified it as Y-1a.
In 1956, the GN dieselized operations through the Cascade Tunnel. The electrical system was decommissioned, and the Y-1 locomotives were sold to the Pennsylvania Railroad, who classified them as FF2. GN 5011 was broken up for spares, and the remaining seven locomotives were overhauled and converted to PRR standards and then placed into service, being assigned numbers 1–7 on the PRR. They lasted a few more years on the PRR, and were all scrapped between 1957 and 1966.
Fleet roster
ALCO serial
GE serial
Build date
GN No.
PRR No.
Scrap date
67022
10160
August 1927
5010
1
1966
67023
10161
September 1927
5011
—
1957
67542
10537
September 1928
5012
2
1962
67543
10538
July 1928
5013
3
1966
68272
11149
August 1930
5014
4
1960
68273
11150
August 1930
5015
5
1966
68274
11151
August 1930
5016
6
1966
68275
11152
August 1930
5017
7
1966
References
Keyes, Norman C. Jr.; Middleton, Kenneth R. (Autumn 1980). "The Great Northern Railway Company: All-Time Locomotive Roster, 1861–1970". Railroad History. 143 (143). Boston, Mass.: Railway and Locomotive Historical Society: 117. ISSN0090-7847. JSTOR43523930.
Pennsylvania Railroad. "FF2". PRR Locomotive Diagrams. Retrieved 2006-01-05. (Simple drawing and specifications, for general reference by railroad staff).
Staufer, Alvin F.; Pennypacker, Bert (1962). Pennsy Power: Steam and Electric Locomotives of the Pennsylvania Railroad, 1900-1957. Research by Martin Flattley. Carollton, Ohio: Alvin F. Staufer. ISBN 978-0-9445-1304-0. pages 248–253
Great Northern Railway steam and electric locomotives