PRR RS27 2407
- Group: Pennsylvania Railroad 2400-2407
- Railroad class: AF-24
- Builder number: Alco 83614
- Builder date: October, 1960
- Order number: 3327-15
- Horsepower: 2400
- Prime mover: Alco turbocharged V16-251B
- Main generator: General Electric 5GT581D2
- Traction motors: General Electric 752
- Production: 27 units from December, 1959, to October, 1962
Pennsylvania Railroad 2407 > Penn Central 2407 > Conrail 2407 > Conrail 5099
Built as Pennsylvania Railroad 2407 in October, 1960, part of two separate orders (2400-2407 and 2408-2414), both delivered in the same month. It became Penn Central 2407 in the 1968 merger and Conrail 2407 in the 1976 merger. It was numbered Conrail 5099 for less than two weeks before retirement. It became Conrail’s last operating RS27 in 1979, when it was retired along with the remaining C425’s and C430’s.
Pennsylvania Railroad RS27 orders:
- Pennsylvania Railroad 2400-2407, delivered October, 1962
- Pennsylvania Railroad 2408-2414, delivered October, 1962
The RS27 was the four-axle equivalent to the RSD15. Only 27 were ever built. Pennsylvania had the largest fleet:
- Pennsylvania Railroad 2400-2414 (15 units)
- Chicago & North Western 900-903 (4 units)
- Soo Line 415-416 (2 units)
- Green Bay & Western 310
Alco built five demonstrators, 640-1 to 640-5. Alco 640-1 was rebuilt as Pennsylvania Railroad C424 2415, that road’s only C424. Alco 640-2 through 640-5 became Union Pacific 675-678 in September, 1961, but did not linger long. UP 677 was wrecked in 1968, and the rest were retired in 1971.
Chicago & North Western owned a single four unit A-B-B-A set of Alco FA1’s, which were originally demonstrators, and traded those in to Alco for the four RS27’s. Those in turn were traded back to Alco after less than a decade in exchange for four C425’s, the only ones owned by the C&NW.