Bosques de Chihuahua FM H16-44 1000 at Las Pomas, Chihuahua, March 26, 1976. Photographer: James Marcus.

When Chihuahua al Pacifico talked FM into reopening Beloit and building one last order of H 4s and a lone H12-44,

(Craig Garver, Public domain,


FM logo.


The FM H-16-44 was a diesel-electric locomotive produced by Fairbanks-Morse from April 1950 – February 1963. The locomotive shared an identical platform and carbody with the predecessor Model FM H-15-44 (but not the FM H-20-44 end cab road switcher which used a different carbody and frame and a larger prime mover), and were equipped with the same eight-cylinder opposed piston engine that had been uprated to 1,600 horsepower (1,200 kW). The H-16-44 was configured in a B-B wheel arrangement, mounted atop a pair of two-axle AAR Type-B road trucks with all axles powered. In late 1950, the AAR trucks were almost exclusively replaced with the same units found on the company's "C-liner" locomotives.

As with many of their F–M contemporaries, the H-16-44s produced through 1954 featured numerous Raymond Loewy design touches, in this case largely manifested in the form of sloping body lines and a noticeable protrusion in the long hood around the radiator shutters. Cab side window units include inoperable "half moon"-shaped panes, resulting in an oblong-shaped assembly. To reduce manufacturing costs, the curved window panes were eliminated from later models, and from 1953 onward the raised, elongated headlight mounting was omitted. Units built in the "Spartanized" fashion can be spotted by their straight ends, coupled with the lack of superfluous trim. Ventilation slots were added at the battery box to reduce the possibility of explosions. The final production phase, which commenced in March 1955, turned out units that most closely resembled the Fairbanks–Morse "Train Master" series.

209 were built for American railroads, 58 were manufactured from March 1955 – June 1957 by the Canadian Locomotive Company for use in Canada, and 32 units were exported to Mexico. Two intact examples of the H-16-44 are known to survive today: FNM (ex-CHP) 602 at the National Rail Museum in Puebla, Mexico, formerly displayed at the Chihuahua al Pacífico shops in Mexico, and ex-CHP 525 on display at Nuevo Casas Grandes in Chihuahua, Mexico. The shell of CHP 524 is on display as part of a memorial at Temoris, Mexico. Former Canadian Pacific 8554, that had been set aside for preservation by CP in the 1970's and was last the property of a Canadian railroad historical society, was scrapped in December 2023 after issues getting it transported off the property it was stored at.


New Haven FM H-16-44 1602 at South Braintree, Massachusetts, April 8, 1962. Photographer: Arthur B Johnson.

(Craig Garver, Public domain,


Units produced by Fairbanks-Morse (1950–1963)

Railroad Quantity Road numbers
Akron, Canton and Youngstown Railroad 8 201–208
Alabama Great Southern Railroad 6 6545–6550
Atchison, Topeka and Santa Fe Railway 20 2800–2819
Baltimore and Ohio Railroad 10 906, 907, 925–927, 6705–6709
Bosques de Chihuahua 2 501, 1000
Central Railroad of New Jersey 4 1514–1517
Chicago, Milwaukee, St. Paul and Pacific Railroad   37 2450–2516
Chihuahua al Pacífico 30 501–525, 600–605
Delaware, Lackawanna and Western Railroad 6 930–935
Long Island Rail Road 8 1501–1509
Missouri-Kansas-Texas Railroad 5 1591, 1731–1734, all re-engined by Baldwin-Lima-Hamilton in 1960 with I8 608A
New York Central Railroad 13 7000–7012 to Penn Central 5100-5112
New York, New Haven and Hartford Railroad 25 560–569, 1600–1614, 1600s to Penn Central 5160-5174
Pennsylvania Railroad 10 8807–8816 to Penn Central 5150-5159
Pittsburgh and West Virginia Railroad 4 90–93
Southern Railway 10 2146–2155
Union Pacific 3 DS1340–DS1342
Virginian Railway 40 10–49

Units produced by the Canadian Locomotive Company (1955–1957)

Railroad Quantity Road numbers
Canadian National Railway 18 1841–1858
Canadian Pacific Railway 40 8547–8556, 8601–8610, 8709–8728

Milwaukee Road FM H-16-44 419 at Council Bluffs, Iowa, September 2, 1974. Photographer: Bruce Black.

(Craig Garver, Public domain,



Type and origin
Power type: Diesel-electric
Builder: Fairbanks-Morse
Model: H-16-44
Build date: April 1950 – February 1963
Total produced: 299
​• AAR B-B
• UIC B′B′
Gauge: 4 ft 8+1⁄2 in (1,435 mm)
Length: 51 ft 0 in (15.54 m)
Locomotive weight: 250,000 lb (113.4 tonnes)
Prime mover: FM 38D-8 1/8
Engine type: Two-stroke diesel
Aspiration: Roots blower
Displacement: 8,295 cu in (135,930 cm3)
Cylinders: 8 (Opposed piston)
Cylinder size: 8.125 in × 10 in (206 mm × 254 mm)
Transmission: DC generator, DC traction motors
Locomotive brake: Straight air
Train brakes: Air
Performance figures
Maximum speed: 65 mph (105 km/h)
Power output: 1,600 hp (1.19 MW)
Tractive effort: 42,125 lbf (187.4 kN)
Locale: North America


Virginian Railway No. 36 in South Norfolk, Virginia.

(The original uploader was Vaoverland at English Wikipedia., Public domain, via Wikimedia Commons)