ALCO FA
Encyclopedia
The ALCO FA was a family of B-B diesel locomotive
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...

s designed to haul freight train
Freight train
A freight train or goods train is a group of freight cars or goods wagons hauled by one or more locomotives on a railway, ultimately transporting cargo between two points as part of the logistics chain...

s. The locomotives were built by a partnership
Alco-GE
Alco-GE was a partnership between the American Locomotive Company and General Electric that lasted from 1940 to 1953. Their main competitor was EMD. Under this arrangement, Alco produced the locomotive body and prime mover, and GE supplied the electrical gear...

 of ALCO and GE in Schenectady, New York
Schenectady, New York
Schenectady is a city in Schenectady County, New York, United States, of which it is the county seat. As of the 2010 census, the city had a population of 66,135...

, between January 1946 and May 1959. They were of a cab unit
Cab unit
A cab unit and a carbody unit are body styles of locomotives in railroad terminology. While closely related, they are not exactly the same....

 design, and both cab-equipped lead (A unit
A unit
An A unit, in railroad terminology, is a locomotive equipped with a driving cab, or crew compartment, and the control system to control other locomotives in a multiple unit, and therefore able to be the lead unit in a consist of several locomotives controlled from a single position...

) FA and cabless booster (B unit
B unit
A "B" unit, in railroad terminology, is a locomotive unit which does not have a driving cab, or crew compartment, and must therefore be controlled from another, coupled locomotive with a driving cab . The term booster unit is also used. The concept was largely confined to North America...

) FB models were built. A dual passenger-freight version, the FPA/FPB, was also offered. It was equipped with a steam generator
Steam generator (railroad)
Steam generator is the term used to describe a type of boiler used to produce steam for climate control and potable water heating in railroad passenger cars...

 for heating passenger cars.

Externally, the FA and FB models looked very similar to the ALCO PA
ALCO PA
ALCO PA refers to a family of A1A-A1A diesel locomotives built to haul passenger trains that were built in Schenectady, New York in the United States by a partnership of the American Locomotive Company and General Electric between June, 1946 and December, 1953...

 models produced in the same period. Both the FA and PA models were styled by GE's Ray Patten. They shared many of the same characteristics both aesthetically and mechanically. It was the locomotive's mechanical qualities (the ALCO 244 V-12
V12 engine
A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12 pistons driving a common crankshaft....

 prime mover) and newer locomotive models from both General Motors Electro-Motive Division (EMD) and General Electric
General Electric
General Electric Company , or GE, is an American multinational conglomerate corporation incorporated in Schenectady, New York and headquartered in Fairfield, Connecticut, United States...

 (the partnership with ALCO was dissolved in 1953) that ultimately led to the retirement of the FA/FB locomotive model from revenue service. Several examples of FAs and FBs have been preserved in railroad museums, a few of them in operational status on such lines as the Grand Canyon Railway
Grand Canyon Railway
The Grand Canyon Railway , is a passenger railroad which operates between Williams, Arizona, and Grand Canyon National Park South Rim.-Santa Fe Ownership:...

 and the Napa Valley Wine Train
Napa Valley Wine Train
The Napa Valley Wine Train is operated by the Napa Valley Railroad . The train is a privately operated excursion train that runs between Napa and St. Helena, California. Much of the rail line parallels State Route 29 after leaving the City of Napa and passes the towns of Yountville, Rutherford and...

.

Service history

The FAs, as well as their cousins, the ALCO PA
ALCO PA
ALCO PA refers to a family of A1A-A1A diesel locomotives built to haul passenger trains that were built in Schenectady, New York in the United States by a partnership of the American Locomotive Company and General Electric between June, 1946 and December, 1953...

s, were born as a result of Alco's development of a new diesel engine design, the Model 244. In early 1944, development started on the new design, and by November 1945, the first engines were beginning to undergo tests. This unusually short testing sequence was brought about by the decision of Alco's senior management that the engine and an associated line of road locomotives had to be introduced no later than the end of 1946. In preparation for this deadline, by January 1946, the first four locomotives with the 244 engines had been built. Two FA-1s and an FB-1 were painted in Alco Demonstrator colors and were released for road tests for a month and a half on the Delaware and Hudson Railway
Delaware and Hudson Railway
The Delaware and Hudson Railway is a railroad that operates in the northeastern United States. Since 1991 it has been a subsidiary of the Canadian Pacific Railway, although CPR has assumed all operations and the D&H does not maintain any locomotives or rolling stock.It was formerly an important...

. A strike at Alco delayed production beyond the first four units and delivery of the first units, to the Gulf, Mobile and Ohio Railroad
Gulf, Mobile and Ohio Railroad
The Gulf, Mobile and Ohio was a Class I railroad in the central United States whose primary routes extended from Mobile, Alabama, and New Orleans, Louisiana, to St...

, began in May 1946, and continued into early 1947, totaling 80 units. At the end of this run, Alco upgraded the generators in the locomotives, with the first of these models entering service in February 1947 for the New York Central. In 1950, the Montreal Locomotive Works
Montreal Locomotive Works
Montreal Locomotive Works was a Canadian railway locomotive manufacturer which existed under several names from 1883–1985, producing both steam and diesel locomotives. For a number of years it was a subsidiary of the American Locomotive Company...

, an affiliate of Alco, began production of FAs as well. In the Fall of 1950, an upgraded model, the FA-2, was launched. This model featured an uprated Model 244 engine, with an output of 1600 horsepower. Additionally, the carbody was lengthened, making possible the addition of a steam generator in the A unit to allow for passenger service. Models equipped as such were designated the FPA-2/FPB-2. The first FA-2s were delivered in October 1950 to the Baltimore and Ohio and the Erie. By this time, however, the cab unit had fallen out of favor due to the greater versatility of road switchers, and U S production of the FA line ended in 1956, with Canadian production ending in 1959.

Models overview

Three different models were offered. The FA-1/FB-1, which featured a 1500 hp rating, was built from January 1946 to October 1950 with a 1600 hp version produced between March and August 1950 (many early models were subsequently upgraded to 1,600 hp). The 1600 hp FA-2/FB-2 (along with the FPA-2/FPB-2 variants) was built between October 1950 and June 1956. The 1800 hp FPA-4/FPB-4, powered by the 251
ALCO 251
The Alco 251 diesel engine was developed by the American Locomotive Company to replace the 244 and 539. The 251 was developed to be used in diesel locomotives, as a marine power plant in ships and as a stationary power generator.-Development:...

V-12
V12 engine
A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12 pistons driving a common crankshaft....

 engine, was built between October 1958 and May 1959 by ALCO's Canadian
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 subsidiary, Montreal Locomotive Works
Montreal Locomotive Works
Montreal Locomotive Works was a Canadian railway locomotive manufacturer which existed under several names from 1883–1985, producing both steam and diesel locomotives. For a number of years it was a subsidiary of the American Locomotive Company...

 (MLW).

Externally, the FA-1/FB-1 could be distinguished from the FA-2/FB-2 (FPA-2/FPB-2) by the position of the radiator shutters — the FA-1/FB-1's shutters were at the far end of the carbody, whereas on the FA-2/FA-2 they were further forward, the design having been modified to allow the installation of a steam generator behind the radiator. The FPA-4/FPB-4 were visually different due to the additional radiator space that was positioned below the shutters. These Canadian variants were intended and used for high-speed passenger service, and remained in use into the 1990s on Via Rail Canada.

The FA had the same distinctive styling as its larger cousin, the ALCO PA
ALCO PA
ALCO PA refers to a family of A1A-A1A diesel locomotives built to haul passenger trains that were built in Schenectady, New York in the United States by a partnership of the American Locomotive Company and General Electric between June, 1946 and December, 1953...

, with a long, straight nose tipped by a headlight in a square, slitted grille and raked windshields, although it lacked the distinctive trim pieces found behind the cab windows of the PA. As with the PA, the overall design owed much to the Fairbanks-Morse
Fairbanks-Morse
Fairbanks Morse and Company was a manufacturing company in the late 19th and early 20th century. Originally a weighing scale manufacturer, it later diversified into pumps, engines, windmills, locomotives and industrial supplies until it was merged in 1958...

 Erie-built
FM Erie-built
The Erie-built was the first streamlined, cab-equipped dual service diesel locomotive built by Fairbanks-Morse, introduced as direct competition to such models as the ALCO PA and EMD E-unit...

 design, which had been constructed by ALCO's sales partner General Electric
General Electric
General Electric Company , or GE, is an American multinational conglomerate corporation incorporated in Schenectady, New York and headquartered in Fairfield, Connecticut, United States...

 (GE) at their Erie, Pennsylvania
Erie, Pennsylvania
Erie is a city located in northwestern Pennsylvania in the United States. Named for the lake and the Native American tribe that resided along its southern shore, Erie is the state's fourth-largest city , with a population of 102,000...

, plant. GE's industrial designer Ray Patten styled the FA and FB, and many believe it likely that he took drawings of the Erie-built as a starting point, lengthening and squaring the nose and giving it a more aggressive look. The majority of FA components were compatible with the PA.

As with the PA, the model 244 diesel prime mover proved to be the undoing of the FA, and the locomotives failed to capture a marketplace dominated by General Motors Electro-Motive Division (EMD). The later 251
ALCO 251
The Alco 251 diesel engine was developed by the American Locomotive Company to replace the 244 and 539. The 251 was developed to be used in diesel locomotives, as a marine power plant in ships and as a stationary power generator.-Development:...

-series engine, a vastly improved prime mover, was not available in time for ALCO to recover the loss of reputation caused by the unreliability of the 244, which was a key factor in the dissolution of the partnership with GE. By the time the ALCO 251
ALCO 251
The Alco 251 diesel engine was developed by the American Locomotive Company to replace the 244 and 539. The 251 was developed to be used in diesel locomotives, as a marine power plant in ships and as a stationary power generator.-Development:...

 engine was accepted into widespread use, General Electric had launched their own entries into the diesel-electric locomotive market, notably the U25B. General Electric eventually supplanted ALCO as a manufacturer of locomotives, leading to ALCO's exit from the locomotive market in 1969.

Units produced by ALCO and the Montreal Locomotive Works (1946–1956)

Almost 800 FA units were built by ALCO and MLW, with just over 15% of them sold to New York Central Railroad
New York Central Railroad
The New York Central Railroad , known simply as the New York Central in its publicity, was a railroad operating in the Northeastern United States...

, and another 5% each to Union Pacific Railroad
Union Pacific Railroad
The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....

, Gulf, Mobile and Ohio Railroad
Gulf, Mobile and Ohio Railroad
The Gulf, Mobile and Ohio was a Class I railroad in the central United States whose primary routes extended from Mobile, Alabama, and New Orleans, Louisiana, to St...

 and Missouri Pacific Railroad
Missouri Pacific Railroad
The Missouri Pacific Railroad , also known as the MoPac, was one of the first railroads in the United States west of the Mississippi River. MoPac was a Class I railroad growing from dozens of predecessors and mergers, including the St. Louis, Iron Mountain and Southern Railway , Texas and Pacific...

. About half as many FB units were produced and sold in similar ratios.
FA-1 (cab) and FB-1 (cabless booster) units
Railroad Quantity FA-1 Quantity FB-1 Road numbers FA-1 Road numbers FB-1 Notes
Canadian National Railway
Canadian National Railway
The Canadian National Railway Company is a Canadian Class I railway headquartered in Montreal, Quebec. CN's slogan is "North America's Railroad"....

s
8
9400–9407
Built by MLW
Canadian Pacific Railway
Canadian Pacific Railway
The Canadian Pacific Railway , formerly also known as CP Rail between 1968 and 1996, is a historic Canadian Class I railway founded in 1881 and now operated by Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001...

 
8
4
4000–4007
4400–4403
Built in USA for operations in Vermont
20
20
4008–4027
4404–4423
Built by MLW
Chicago, Rock Island and Pacific Railroad
Chicago, Rock Island and Pacific Railroad
The Chicago, Rock Island and Pacific Railroad was a Class I railroad in the United States. It was also known as the Rock Island Line, or, in its final years, The Rock.-Incorporation:...

 
16
8
145–160
145B–152B
Re-engined by EMD
Erie Railroad
Erie Railroad
The Erie Railroad was a railroad that operated in New York State, New Jersey, Pennsylvania, Ohio, Indiana, and Illinois, originally connecting New York City with Lake Erie...

 
22
22
725A,D–735A,D
725B,C–735B,C
Estrada de Ferro Central do Brasil
Estrada de Ferro Central do Brasil
The Estrada de Ferro Central do Brasil was one of the principal railways of Brazil, uniting the states of Rio de Janeiro, São Paulo and Minas Gerais.-Origins:...

 
12
3201–3212
Great Northern Railway 
8
5
276A,B, 319A,C, 440A,D, 442A,D
310B, 440B,C, 442B,C
440A,B,C,D and 442A,B,C,D to SP&S
Green Bay and Western Railroad
Green Bay and Western Railroad
The Green Bay and Western Railroad served the transportation and freight haulage needs of northern Wisconsin for almost 100 years before it was absorbed into the Wisconsin Central in 1993...

 
2
503 (1st), 507
503 renumbered 506
Green Bay and Western (Kewanee, Green Bay and Western)
3
501, 502, 503 (2nd)
Gulf, Mobile and Ohio Railroad
Gulf, Mobile and Ohio Railroad
The Gulf, Mobile and Ohio was a Class I railroad in the central United States whose primary routes extended from Mobile, Alabama, and New Orleans, Louisiana, to St...

 
55
33
700–754
B1–B33
Lehigh and New England Railroad
Lehigh and New England Railroad
The Lehigh and New England Railroad was a connection from northeastern Pennsylvania towards the Poughkeepsie Bridge across the Hudson River. Originally planned as a continuous line east to Boston, plans were later cut back to a section west of the river....

 
10
3
701–710
751–753
to Louisville and Nashville 332–341 (A) 327–329 (B) on L&NE abandonment
Lehigh Valley Railroad
Lehigh Valley Railroad
The Lehigh Valley Railroad was one of a number of railroads built in the northeastern United States primarily to haul anthracite coal.It was authorized April 21, 1846 in the U.S. state of Pennsylvania and incorporated September 20, 1847 as the Delaware, Lehigh, Schuylkill and Susquehanna Railroad...

 
10
10
530–548 (even)
531–549 (odd)
Minneapolis, St. Paul and Sault Ste. Marie Railway (“Soo Line”)
14
205A,B–211A,B
Soo Line (Wisconsin Central Railway
Wisconsin Central Railway
The original Wisconsin Central Railroad Company was established by an act of the Wisconsin State Legislature and incorporated in February 1871. It built track throughout Wisconsin, connecting to neighboring states, before being leased to Northern Pacific Railway between 1889–1893...

)
8
2220A,B–2223A,B
Missouri-Kansas-Texas Railroad
Missouri-Kansas-Texas Railroad
The Missouri–Kansas–Texas Railroad was incorporated May 23, 1870. In its earliest days the MKT was commonly referred to as "the K-T", which was its stock exchange symbol; this common designation soon evolved into "the Katy"....

 
18
326A,C–334A,C
331A replaced by FA-2; renumbered 82A,C–90A,C
Missouri Pacific Railroad
Missouri Pacific Railroad
The Missouri Pacific Railroad , also known as the MoPac, was one of the first railroads in the United States west of the Mississippi River. MoPac was a Class I railroad growing from dozens of predecessors and mergers, including the St. Louis, Iron Mountain and Southern Railway , Texas and Pacific...

 
30
15
301–330
301B–310B, 321B–325B
New York Central Railroad
New York Central Railroad
The New York Central Railroad , known simply as the New York Central in its publicity, was a railroad operating in the Northeastern United States...

 
44
23
1000–1043
3300–3322
New York, New Haven and Hartford Railroad
New York, New Haven and Hartford Railroad
The New York, New Haven and Hartford Railroad , was a railroad that operated in the northeast United States from 1872 to 1968 which served the states of Connecticut, New York, Rhode Island, and Massachusetts...

 
30
15
0400–0429
0450–0464
Pennsylvania Railroad
Pennsylvania Railroad
The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

 
8
8
9600–9607
9600B–9607B
Reading Company
Reading Company
The Reading Company , usually called the Reading Railroad, officially the Philadelphia and Reading Rail Road and then the Philadelphia and Reading Railway until 1924, operated in southeast Pennsylvania and neighboring states...

 
6
6
300A–305A
300B–305B
St. Louis-San Francisco Railway
St. Louis-San Francisco Railway
The St. Louis – San Francisco Railway , also known as the Frisco, was a railroad that operated in the Midwest and South Central U.S. from 1876 to 1980.-History:...

 
32
16
5200–5231
5300–5315
Most where rebuilt with EMD567 prime movers
Secretaria de Comunicaciones de Obras Publicas (SCOP) (Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

)
5
23031–23034, 23039
Seaboard Air Line Railroad
Seaboard Air Line Railroad
The Seaboard Air Line Railroad , which styled itself "The Route of Courteous Service," was an American railroad whose corporate existence extended from April 14, 1900, until July 1, 1967, when it merged with the Atlantic Coast Line Railroad, its longtime rival, to form the Seaboard Coast Line...

 
3
3
4200–4202
4300–4302
Spokane, Portland and Seattle Railway
Spokane, Portland and Seattle Railway
The Spokane, Portland and Seattle Railway was a United States-based railroad incorporated in 1905. It was a joint venture by the Great Northern Railway and the Northern Pacific Railway to build a railroad along the north bank of the Columbia River....

 
14
8
850A-1,2–860A-1,2, (even) 866A-1,2
856B-1,2–860B-1,2 (even), 866B-1,2
FA's renumbered to 850-867 and FB's to 200-211
Tennessee Central Railway
Tennessee Central Railway
The Tennessee Central Railway was founded in 1884 as the Nashville and Knoxville Railroad by Alexander S. Crawford. It was an attempt to open up a rail route from the coal and minerals of East Tennessee to the markets of the midstate, a service which many businessmen felt was not being adequately...

 
5
1
801–805
801B
Union Pacific Railroad
Union Pacific Railroad
The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....

 
46
44
1500A–1523A, 1542A–1543A, 1626–1643
1524B–1539B, 1618B,C–1642B,C (even)
1500A–1523A renumbered 1600A–1623A; 1524B–1539B renumbered 1600B,C–1616B,C (even)
Wabash Railroad
Wabash Railroad
The Wabash Railroad was a Class I railroad that operated in the mid-central United States. It served a large area, including trackage in the states of Ohio, Indiana, Illinois, Iowa, Michigan, Missouri and Ontario. Its primary connections included Chicago, Illinois, Kansas City, Missouri, Detroit,...

 
10
5
1200,A–1204,A
1200B–1204B
Totals 447 249
FA-2 (cab) and FB-2 (cabless booster) units
Railroad Quantity FA-2 Quantity FB-2 Road numbers FA-2 Road numbers FB-2 Notes
American Locomotive Company
American Locomotive Company
The American Locomotive Company, often shortened to ALCO or Alco , was a builder of railroad locomotives in the United States.-Early history:...

 (demonstrators)
4
4
1600A,D, 1602A,D
1600B,C, 1602B,C
sold to Chicago and North Western (1600) and Great Northern (1602)
Ann Arbor Railroad 
14
50,A–56,A
to Wabash Railroad
Baltimore and Ohio Railroad
Baltimore and Ohio Railroad
The Baltimore and Ohio Railroad was one of the oldest railroads in the United States and the first common carrier railroad. It came into being mostly because the city of Baltimore wanted to compete with the newly constructed Erie Canal and another canal being proposed by Pennsylvania, which...

 
38
21
801,A–837,A (odd)
801X–837X (odd), 817AX, 837AX
Canadian National Railway
Canadian National Railway
The Canadian National Railway Company is a Canadian Class I railway headquartered in Montreal, Quebec. CN's slogan is "North America's Railroad"....

s
25
15
9408–9456 (even)
9409–9437 (odd)
Built by MLW
Canadian Pacific Railway
Canadian Pacific Railway
The Canadian Pacific Railway , formerly also known as CP Rail between 1968 and 1996, is a historic Canadian Class I railway founded in 1881 and now operated by Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001...

 
20
6
4042–4051, 4084–4093
4465–4470
Built by MLW
Consolidated Railway of Cuba 
12
1600–1605, 1650–1655
Erie Railroad
Erie Railroad
The Erie Railroad was a railroad that operated in New York State, New Jersey, Pennsylvania, Ohio, Indiana, and Illinois, originally connecting New York City with Lake Erie...

 
8
8
736A,D–739A,D
736B,C–739B,C
Ferrocarriles Nacionales de México
Ferrocarriles Nacionales de México
Ferrocarriles Nacionales de México, was Mexico's state owned railroad company from 1938 to 1998, and prior to 1938 a major railroad controlled by the government that linked Mexico City to the major cities of Nuevo Laredo and Ciudad Juárez on the U.S. border...

 
18
23
6507A–6522A, 6519A (2nd), 6534A
6507B–6527B, 6519B (2nd), 6534B
Great Northern Railway 
2
277A,B
Gulf, Mobile and Ohio Railroad
Gulf, Mobile and Ohio Railroad
The Gulf, Mobile and Ohio was a Class I railroad in the central United States whose primary routes extended from Mobile, Alabama, and New Orleans, Louisiana, to St...

 
4
834–837
Louisville and Nashville Railroad
Louisville and Nashville Railroad
The Louisville and Nashville Railroad was a Class I railroad that operated freight and passenger services in the southeast United States.Chartered by the state of Kentucky in 1850, the L&N, as it was generally known, grew into one of the great success stories of American business...

 
39
14
300–321, 353–369
200–211, 330–331
Lehigh Valley Railroad
Lehigh Valley Railroad
The Lehigh Valley Railroad was one of a number of railroads built in the northeastern United States primarily to haul anthracite coal.It was authorized April 21, 1846 in the U.S. state of Pennsylvania and incorporated September 20, 1847 as the Delaware, Lehigh, Schuylkill and Susquehanna Railroad...

 
8
4
580–594 (even)
581–587 (odd)
Missouri-Kansas-Texas Railroad
Missouri-Kansas-Texas Railroad
The Missouri–Kansas–Texas Railroad was incorporated May 23, 1870. In its earliest days the MKT was commonly referred to as "the K-T", which was its stock exchange symbol; this common designation soon evolved into "the Katy"....

 
1
331A (2nd)
Missouri Pacific Railroad
Missouri Pacific Railroad
The Missouri Pacific Railroad , also known as the MoPac, was one of the first railroads in the United States west of the Mississippi River. MoPac was a Class I railroad growing from dozens of predecessors and mergers, including the St. Louis, Iron Mountain and Southern Railway , Texas and Pacific...

 
43
34
331–386
331B–335B, 345B–356B, 370B–386B
New York Central Railroad
New York Central Railroad
The New York Central Railroad , known simply as the New York Central in its publicity, was a railroad operating in the Northeastern United States...

 
80
50
1044–1123
3323–3372
New York, New Haven and Hartford Railroad
New York, New Haven and Hartford Railroad
The New York, New Haven and Hartford Railroad , was a railroad that operated in the northeast United States from 1872 to 1968 which served the states of Connecticut, New York, Rhode Island, and Massachusetts...

 
5
0465–0469
Pennsylvania Railroad
Pennsylvania Railroad
The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

 
24
12
9608A–9631A
9608B–9630B (even)
Secretaria de Comunicaciones de Obras Publicas (SCOP) (Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

)
6
7121-8–7121-13
Spokane, Portland and Seattle Railway
Spokane, Portland and Seattle Railway
The Spokane, Portland and Seattle Railway was a United States-based railroad incorporated in 1905. It was a joint venture by the Great Northern Railway and the Northern Pacific Railway to build a railroad along the north bank of the Columbia River....

 
2
2
868A-1,2
868B-1,2
FA's to 868-869 FB's to 212-213
Western Maryland Railway
Western Maryland Railway
The Western Maryland Railway was an American Class I railroad which operated in Maryland, West Virginia, and Pennsylvania. It was primarily a coal hauling and freight railroad, with a small passenger train operation. The WM became part of the Chessie System in 1973 and ceased operating its lines...

 
4
301–304
Totals 348 202

Units produced by ALCO and the Montreal Locomotive Works (1950–1959)

ALCO and MLW built 130 of the various FP models with the largest quantity, 45% of the total production, sold to Canadian National Railway
Canadian National Railway
The Canadian National Railway Company is a Canadian Class I railway headquartered in Montreal, Quebec. CN's slogan is "North America's Railroad"....

.
FPA-2 (cab) and FPB-2 (cabless booster) units
Railroad Quantity FPA-2 Quantity FPB-2 Road numbers FPA-2 Road numbers FPB-2 Notes
Canadian National Railway
Canadian National Railway
The Canadian National Railway Company is a Canadian Class I railway headquartered in Montreal, Quebec. CN's slogan is "North America's Railroad"....

s
6
6
6706–6711
6806–6811
Built by MLW
Canadian Pacific Railway
Canadian Pacific Railway
The Canadian Pacific Railway , formerly also known as CP Rail between 1968 and 1996, is a historic Canadian Class I railway founded in 1881 and now operated by Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001...

 
7
2
4082–4083, 4094–4098
4463–4464
Built by MLW
Ferrocarriles Nacionales de México
Ferrocarriles Nacionales de México
Ferrocarriles Nacionales de México, was Mexico's state owned railroad company from 1938 to 1998, and prior to 1938 a major railroad controlled by the government that linked Mexico City to the major cities of Nuevo Laredo and Ciudad Juárez on the U.S. border...

 
18
11
6500–6501, 6502A–6506A, 6523A–6533A
6502B–6506B, 6528B–6533B
built by Alco and MLW
Ferrocarril del Pacifico
Ferrocarril del Pacífico
The Ferrocarril del Pacífico is a former railroad line of Mexico that operated from Benjamín Hill, Sonora to Guadalajara, Jalisco via Mazatlán, Sinaloa. It was absorbed into Ferrocarriles Nacionales de México in 1984....

 
4
901–904
Louisville and Nashville Railroad
Louisville and Nashville Railroad
The Louisville and Nashville Railroad was a Class I railroad that operated freight and passenger services in the southeast United States.Chartered by the state of Kentucky in 1850, the L&N, as it was generally known, grew into one of the great success stories of American business...

 
5
350–352, 383–384
Missouri Pacific Railroad
Missouri Pacific Railroad
The Missouri Pacific Railroad , also known as the MoPac, was one of the first railroads in the United States west of the Mississippi River. MoPac was a Class I railroad growing from dozens of predecessors and mergers, including the St. Louis, Iron Mountain and Southern Railway , Texas and Pacific...

 
19
6
361-373, 387-392
387B–392B
Totals 59 25
FPA-4 (cab) and FPB-4 (cabless booster) units
Railroad Quantity FPA-4 Quantity FPB-4 Road numbers FPA-4 Road numbers FPB-4 Notes
Canadian National Railway
Canadian National Railway
The Canadian National Railway Company is a Canadian Class I railway headquartered in Montreal, Quebec. CN's slogan is "North America's Railroad"....

s
34
12
6760–6793
6860–6871
Built by MLW

Surviving examples

Some 20 units of various designations exist today in a preserved state, all of which are owned by railway museums or historical societies. Several excursion railways own operating examples which are in regular service, including MLW units received from Via Rail Canada in use on the Grand Canyon Railway
Grand Canyon Railway
The Grand Canyon Railway , is a passenger railroad which operates between Williams, Arizona, and Grand Canyon National Park South Rim.-Santa Fe Ownership:...

 and Napa Valley Wine Train
Napa Valley Wine Train
The Napa Valley Wine Train is operated by the Napa Valley Railroad . The train is a privately operated excursion train that runs between Napa and St. Helena, California. Much of the rail line parallels State Route 29 after leaving the City of Napa and passes the towns of Yountville, Rutherford and...

. The Cuyahoga Valley Scenic Railroad
Cuyahoga Valley Scenic Railroad
Cuyahoga Valley Scenic Railroad is a Class III railroad and steam-powered excursion trips through Peninsula, Ohio in the Cuyahoga Valley, primarily through the scenic Cuyahoga Valley National Park.-History:...

 in Peninsula, Ohio, owns four FPA-4s, of which three are in operation as of 2008. Spokane, Portland and Seattle Railway
Spokane, Portland and Seattle Railway
The Spokane, Portland and Seattle Railway was a United States-based railroad incorporated in 1905. It was a joint venture by the Great Northern Railway and the Northern Pacific Railway to build a railroad along the north bank of the Columbia River....

 #866 is undergoing restoration by a private owner in Portland, Oregon.

ALCO "World Locomotive"

ALCO's "World Locomotive" the DL500 (introduced in 1953) originated as a newly designed demonstrator based on the FA-2. The first 25 DL500s used the model 244 engine rated at 1600 hp. Later DL500s were like the FPA-4 and utilize the ALCO model 251B
ALCO 251
The Alco 251 diesel engine was developed by the American Locomotive Company to replace the 244 and 539. The 251 was developed to be used in diesel locomotives, as a marine power plant in ships and as a stationary power generator.-Development:...

 diesel engine as the prime mover and are rated at 1800 hp. All DL500s were built with C-C trucks but B-B or paired A-1-A trucks were offered as an option. The only locale within the Americas where ALCO-built cab units, such as All America Latina Logistica
All America Latina Logistica
América Latina Logística is a Brazilian holding company that operates railway lines in Argentina and Brazil and provides transportation services such as logistics, intermodal transport, port operations, movement and storage of merchandise, administration of storage facilities and general storage...

 (ALL) #8414, still see daily usage in freight duty is Argentina
Argentina
Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

. A total of 369 DL500 locomotives were built by ALCO, A. E. Goodwin, and MLW between May 1953 and December 1967.

Variants of the ALCO "World Locomotive" saw service in Australia where it was built under licence by A.E. Goodwin Ltd. A two cab design went into service on the standard gauge
Standard gauge
The standard gauge is a widely-used track gauge . Approximately 60% of the world's existing railway lines are built to this gauge...

 New South Wales Government Railways
New South Wales Government Railways
The New South Wales Government Railways was the government department that operated the New South Wales Government's railways until the establishment of the Public Transport Commission in 1972. Although later known officially as the Department of Railways, New South Wales, it was still generally...

 as the 44 class
New South Wales 44 class locomotive
The New South Wales 44 class locomotives were one of the first locomotives built by A. E. Goodwin in the Alco tradition. One-hundred of these DL500B units were built. Introduced in 1957, these locomotives have served every part of NSW, from services in the North and South, to the Indian Pacific...

, and both a single cab and double cab design went into service on the 5 in 3 in (1,600.2 mm) broad gauge
Broad gauge
Broad-gauge railways use a track gauge greater than the standard gauge of .- List :For list see: List of broad gauges, by gauge and country- History :...

 South Australian Railways
South Australian Railways
South Australian Railways built and operated railways in South Australia from 1854 to the incorporation of its non-urban railways into the Australian National Railways Commission in 1975, together with the former Commonwealth Railways and the former Tasmanian Government Railways...

as the 930 class.

Similar DL500 locomotives were also used in Greece, India, Pakistan, Peru, and Spain.

External links

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