Alco "FA-1"/"FA-2" Locomotives

The Alco FA was intended to be the builder's answer to Electro-Motive's ever popular FT and subsequent models. The design was the road freight model of Alco's passenger service PA.  The FA also replaced Alco's original DL series, which used the builder's initial prime mover, the model 539T, which proved trouble-prone and unreliable (the company, however, continued to use the DL markings for factor designations). Unfortunately, Alco's new 244 engine also had problems which seriously hurt impacted it from ever making a serious run at EMD's F series. Despite the prime mover's flaws the FA model, and its variants, would sell a little more than 1,000 units making them one of Alco's most successful lines.  

The locomotive could be found far and wide in service across America from the Baltimore & Ohio, Pennsylvania, and New York Central in the east to the Great Northern, St. Louis-San Francisco Railway (Frisco), Wabash, and Union Pacific in the west/Midwest.  Today, several examples of the classic design can be found preserved at museums around the country.

A Baltimore & Ohio FA-2/FB-2/FA-2 set, led by #813, works a "Time Saver" time freight over Sand Patch at Meyersdale, Pennsylvania on September 25, 1952.

The Alco FA sporting a beefier carbody than EMD's F series was introduced by the company in 1946 and initially offered 1,500 horsepower with a B-B wheel arrangement (four axles per truck). Alco also built a B unit, just as EMD offered in its catalog, which was also capable of producing 1,500 horsepower. Unfortunately, the initial FA-1 model and its new 244 model diesel engine proved troublesome and unable to take the pounding required in daily road service. The 244 was used in several early Alco designs and while problematic in main line applications, such as powering the PA and FA design, it actually proved quite reliable in some of the smaller models such as early road switchers like the RS2 and RS3.  With the onset of World War II in late 1941 the American Locomotive Company's diesel development was delayed. This would prove costly to Alco as the Electro-Motive Corporation (later General Motors' Electro-Motive Division) had already unveiled its FT and EA models between 1937 and 1939, years before the war had started.

Western Maryland's only four FA-2's (#301-304) and SD35 #7434 work as helpers on Williamsport Hill as they run light past F7A #59 at Williamsport, Maryland on October 3, 1970. Roger Puta photo.

For technical information about the FA series please click here.  The FT was particularly noteworthy as it paraded around the country with much fanfare; a sensational marketing success it convinced railroad after railroad that main line, heavy-haul diesel locomotives could truly match steam despite offering less horsepower per unit.  While Electro-Motive, like all other builders, was restricted by the U.S. government from continuing their diesel program during the war they already had a model in production before the conflict began and one in which was reliable and sought after by railroads.  With the war restriction Alco was not able to release its FA model until January of 1946.  The Gulf Mobile & Ohio being the first railroad to receive its order receiving #700-754 FAs and #B1-B33 FBs. Around the same time, three demonstrators; two FA-1s and one FB-1 toured on the Delaware & Hudson between January and mid-February that year. Unfortunately, a union strike at Alco's Schenectady, New York plant further delayed production on the GM&O's order and the railroad did not begin receiving its units until May of that year.

A handsome Lehigh Valley FA-1/FB-1 set in striking Cornell Red, lead a long manifest freight passing over the Nickel Plate Road, New York Central, and Erie railroads at Lackawanna, New York in the 1950's.

Despite the FA-1 having reliability issues it provided incredible pulling power, an Alco trademark for many of its models and was certainly one reason why some railroads continued buying its products. The FA's carbody was also very well designed, on par with Electro-Motive's now-classic cab designs. It was developed by General Electric's own Ray Patten as the company during this time was working right alongside Alco in producing diesel locomotives. Patten, who also designed the beautiful sister PA model, shortened the FA's length to just 51 feet, 6 inches (the PA was 65 feet, 8 inches) as well as giving it a shorter, somewhat blunter front nose. Still, the overall slanted front windshields and streamlined look was a hallmark of both models, capped off by the notable grills over the centered headlight.  The FA used a B-B truck arrangement, which could produce a continuous 46,000 pounds of tractive effort and reach a top speed of around 65 mph.

An American Locomotive builder's photo of an FA-2 demonstrator set circa 1950.

When production ended on the FA-1, Alco was able to sell 672 A and B units to nearly twenty domestic railroads (including those built at its Montreal Locomotive Works for Canadian roads). In October of 1950 the builder released its upgraded FA-2, which featured a slight increase in horsepower and longer carbody at 54 feet.  This pushed the radiator shutters slightly forward allowing the unit to receive a steam generator for passenger service (similar to what EMD would do with its FP7 design).  The FA-2 also received an upgraded generator from GE (the model GT581, which replaced the GT564). Both the FA-1 and FA-2 featured turbocharging and dynamic brake capability (if ordered, it was not standard on the model).  In the end, the FA-2 sold slightly better than its early cousin with 597 units produced.

Taken from the Highway 72 overpass a Gulf, Mobile & Ohio FA-FB-FA set arrives at Corinth, Mississippi with train #58 running over the Southern Railway from Forest Yard in Memphis, Tennessee in July, 1966. This was a daily turn for many years, crewed with Southern men (Mr. Murry Tennyson was likely at the throttle in this scene). The yard remains in service today, operated by Kansas City Southern. Richard (Dick) Wallin photo.

Alco FA Series Production Roster (U.S./Canada Only)


Owner Road Number(s) Quantity Date Built
Canadian National9400-940781950
Canadian Pacific4000-4027 (As)281949-1950
Canadian Pacific4400-4423 (Bs)241949-1950
Erie Railroad725A-735A, 725D-735D (As)221947-1949
Erie Railroad725B-735B, 725C-735C (Bs)221948-1949
Great Northern276A, 276B, 310A, 310C, 440A, 440A, 442A, 442D (As)81948- 1950
Great Northern310B, 440B, 440C, 442B, 442C (Bs)51948-1950
Green Bay & Western501-502, 503 (1st/2nd), 50751947-1949
Gulf, Mobile & Ohio700-754 (As)551946-1947
Gulf, Mobile & OhioB1-B33 (Bs)331946-1950
Lehigh & New England701-710 (As)101948-1949
Lehigh & New England751-753 (Bs)31948-1949
Lehigh Valley530-548 (As, Evens)101948
Lehigh Valley531-549 (Bs, Odds)101948
Missouri-Kansas-Texas Railroad (Katy)326A-334A, 326C-334C181948-1949
Missouri Pacific301-330 (As)301948-1950
Missouri Pacific301B-310B, 321B-325B (Bs)151948-1950
New York Central1000-1043 (As)441947-1949
New York Central2300-2322 (Bs)231947-1949
New Haven0400-0429 (As)301947
New Haven0450-0464 (Bs)151947
Pennsylvania9600-9607 (As)81948-1950
Pennsylvania9600B-9607B (Bs)81948-1950
Reading300A-305A (As)61948
Reading300B-305B (Bs)61948
Rock Island145-160 (As)161948
Rock Island145B-152B (Bs)81948
St. Louis-San Francisco Railway (Frisco)5200-5231 (As)321948-1949
St. Louis-San Francisco Railway (Frisco)5300-5315 (Bs)161948-1949
Seaboard Air Line4200-4202 (As)31948
Seaboard Air Line4300-4302 (Bs)31948
Soo Line205A-211A, 205B-211B141948-1949
Spokane, Portland & Seattle850A-1 - 860A-1 (Evens), 850A-2 - 860A-2 (Evens), 866A-1, 866A-2 (As) 141948-1950
Spokane, Portland & Seattle856B-1 - 860B-1 (Evens), 856B-2 - 860B-2 (Evens), 866B-1, 866B-2 (Bs) 81949-1950
Tennessee Central801-805 (As)51949
Tennessee Central801B (Bs)11949
Union Pacific1500A-1543A, 1626-1643 (As)621947-1948
Union Pacific1524B-1541B, 1618B-1642B (Evens), 1618C-1642C (Evens) (Bs)441947- 1948
Wabash Railroad1200-1204, 1200A-1204A (As)101949
Wabash Railroad1200B-1204B (Bs)51949
Wisconsin Central (Soo Line)2220A-2223A, 2220B-2223B81949


American Locomotive power, led by FA-1 #1035, leads this New York Central train (which appears to be performing switching work) at Elkhart, Indiana on September 28, 1962.
Owner Road Number(s) Quantity Date Built
Alco (Demo)1600A, 1600D, 1602A, 1602D (As)41950
Alco (Demo)1600B, 1600C, 1602B, 1602C (Bs)41950
Ann Arbor50-56, 50A-56A141950
Baltimore & Ohio801-837 (Odds), 801A-837A (Odds) (As)361950-1953
Baltimore & Ohio801x-817x (Odds), 817ax, 819x-837x (Odds), 837ax (Bs)211950-1953
Canadian National9408-9456 (Evens) (As)261951-1953
Canadian National9409-9437 (Odds) (Bs)151951-1952
Canadian Pacific4042-4051, 4084-4093 (As)201951-1953
Canadian Pacific4465-4470 (Bs)61953
Erie Railroad736A-739A, 736D-739D (As)81950-1951
Erie Railroad736B-739B, 736C-739C (Bs)81950-1951
Great Northern277A, 277B21950
Louisville & Nashville300-321, 350-369, 383-384 (As)441952-1956
Louisville & Nashville200-211, 300-331 (Bs)141952-1956
Lehigh Valley580-594 (Evens, As)81950-1951
Lehigh Valley581-587 (Odds, Bs)41950-1951
Missouri-Kansas-Texas Railroad (Katy)331A11950
Missouri Pacific331-360, 374-386 (As)431951-1954
Missouri Pacific331B-335B, 345B-356B, 370B-386B (Bs)341951-1954
New Haven465-469 (Bs)51951
New York Central1044-1123 (As)801951-1952
New York Central3323-3372 (Bs)501951-1952
Pennsylvania9608A-9631A (As)241951
Pennsylvania9608B-9630B (Bs)121951
Spokane, Portland & Seattle868A-1, 868A-2 (As)21950
Spokane, Portland & Seattle868B-1, 868B-2 (Bs)21950
Western Maryland301-30441951


Owner Road Number(s) Quantity Date Built
Alco (Demo)1602A, 1602D (To Great Northern, 277A-277B)21950
Baltimore & Ohio4008-4017101950-1951
Canadian National6706-6711 (As)61955
Canadian National6806-6811 (Bs)61955
Canadian Pacific4082-4083, 4094-4098 (As)71953
Canadian Pacific4463-4464 (Bs)21953
Great Northern277A-277B (Ex-Alco Demonstrators)21950
Louisville & Nashville380-38451952
Missouri Pacific361-373, 387-392191952-1954

A pair of handsome, albeit grimy, Baltimore & Ohio FA-2's are seen here between assignments at the Willard, Ohio terminal (named for legendary president Daniel Willard, which led the company from 1910 to 1941) during the 1960's. The B&O was not a big Alco customer and primarily stuck with Electro-Motive for new diesels. However, it did test out a few models, such as the FA.

Finally, Alco offered a passenger version of its FA, the FPA-2 and FPA-4 which sold modestly (it should be noted that the final model, the FPA-4, used Alco's much improved 251 model engine although by the time it was released the builder had already lost most confidence from railroads in its ability to produce reliable locomotives). All told, Alco would sell over a thousand FA units (EMD's F series in comparison sold more than 4,800 units).  In any event, it is interesting to wonder how well the model would have sold had the initial troubles with the 244 (and early 241) model engine had not been present with further research and development taking place before they entered production.  To read more about other Alco models, such as the PA, please visit the Diesel Locomotives section of the site, which can be reached from the top of this page.

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Header Photo: Drew Jacksich

Researching Rights-Of-Way

A popular pastime for many is studying and/or exploring abandoned rights-of-way.  Today, there are tens of thousands of miles scattered throughout the country.  Many were pulled up in the 1970's and 1980's although others were removed long before that.  If you are researching active or abandoned corridors you might want to check out the United States Geological Survey's (USGS) Historical Topographic Map Explorer.  It is an excellent resource with thousands of historic maps on file throughout the country.  Just type in a town or city and click on the timeline of maps at the bottom of the page!

Studying Diesels

You will be hard pressed at finding a better online resource regarding diesel locomotives than Craig Rutherford's  The website contains everything from historic (fallen flags) to contemporary (Class I's, regionals, short lines, and even some museums/tourist lines) rosters, locomotive production information, technical data, all notable models cataloged by the five major builders (American Locomotive, Electro-Motive, General Electric, Fairbanks-Morse, and Baldwin), and much more.  A highly recommended database!

Electro-Motive Database

In 1998 a gentleman by the name of Andre Kristopans put together a web page highlighting virtually every unit every out-shopped by General Motors' Electro-Motive Division.  Alas, in 2013 the site closed by thankfully Don Strack rescued the data and transferred it over to his site (another fine resource).  If you are researching anything EMD related please visit this page first.  The information includes original numbers, serials, and order numbers.