The BLH AS-416 was a diesel-electric locomotive of the road switcher type rated at , that rode on three-axle trucks, having an A1A-A1A wheel arrangement.
Used in much the same manner as its four-axle counterpart, the AS-16, though the wheel arrangement spread out the axle load for operation on light rail such as are found on branch lines.
It was introduced in 1950 as a replacement of the DRS-6-4-1500 and remained in BLH's catalog until their cessation of locomotive manufacture in 1956.
Only 25 units were sold to four railroads — all of whom had bought the earlier model. The vast majority (17 of the 25 units) were purchased by the original Norfolk Southern Railway (1942–1982), becoming a signature locomotive for the company.
Original owners Railroad Quantity Road numbers NotesSavannah and Atlanta Railway Columbus and Greenville Railway Norfolk Southern Railway Office des Chemins de Fer Algériens Total 25
Preservation Two AS-416s survive: Columbus and Greenville 606 is preserved at the Illinois Railway Museum in Union, Illinois. Norfolk Southern 1616 is preserved at the North Carolina Transportation Museum in Spencer, North Carolina.
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