The 70 ton AAR
design flatcar was developed during the Second World War and
was adopted by several railroads including:
- DT&I
- Pere Marquette
- New Haven
- Wabash
- New York Central
- Indiana Harbor Belt
- AT&SF
- Baltimore & Ohio
- Erie/Erie Lackawanna
- CRP/CNJ
The DT&I owned 50 cars in the
900-949 series and were built in 1942. These were
numbered in the 900-949 range. The New Haven owned 100
AAR 70 ton recommended practice flat cars and were built for
the New Haven in 1944 in the early 1950s a few of these cars
were equipped for TOFC service but this only lasted a few
years and by the late 1950s all were reclassified as FMs.
The Wabash owned 50 cars in the 25500-25549 range of
numbers. The Pere Marquette owned 350 of this type of
flat car and they were numbered in the 16500-16849 series,
some built during World War II and the later cars built in
1950. The New York Central System owned 1,100 flat
cars of AAR recommended practice 70 ton design, as follows:
Lot 712-F, NYC 499300-499599,
300 cars built by NYC-owned Dispatch
Shops in East Rochester, NY in 1942-1943
Lot 721-F, NYC 499600-499799,
200 cars built by NYC-owned Dispatch
Shops in East Rochester, NY in 1943
Lot 722-F IHB 8000-8099, 100
cars built by NYC-owned Dispatch
Shops in East Rochester, NY in 1943
Lot 793-F, NYC 499800-500299,
500 cars built by the General American Transportation
Corp. East Chicago, IN shops in 1950
The Santa Fe owned 200 Ft-V class cars, numbered 91500-91699
(built 3-44, Ft-V) and ATSF 91500-91699, built in early 1944
at Butler, PA by the Pullman Standard Car Mfg. Co. The
CRP (later reassigned with CNJ reporting marks) were car
numbers 101-200. Erie cars were numbered 8100-8199,
and were built in 1952. The IHB cars were numbered
8000-8099 and were built in 1943, lot 722-F. The NYC
series of cars were numbered 499300-499599, built in 11-42,
lot 712-F, the 499600-499799 series were built in 1943,
while lot 722-F, and the 499800-500299 cars were built 1-50,
and were part of lot 793-F. Finally, the Wabash cars
were numbered in 25500-25549 series and were built in 1944.
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