The BLH AS-16 was a diesel-electric locomotive rated at 1,625 hp (1,212 kW), that rode on two-axletrucks, having a B-B wheel arrangement. It was the successor to Baldwin's DRS-4-4-1500 model, and remained in production until Baldwin-Lima-Hamilton quit the locomotive manufacturing business in 1956.
Nine railroads bought 127 locomotives, with five railroads having bought the previous model. Former Missouri Pacific 4328 was sold to Bethlehem Steel for Iron Mines Co. of Venezuela and was later acquired by Ferrominera Orinoco. Today the locomotive survives on display at the entrance of CVG Ferrominera Orinoco in Guyana City, Venezuela. It is the sole surviving Baldwin AS-16.
6022–6027 were a cancelled order by the Reading Co., The 6 were built in 1953 with dynamic brakes and conventional mu (as opposed to BLW's air-controlled design). In 1956 the P-RSL acquired the units and had the dynamic brakes removed, BLW air-controlled mu installed, only №'s 6024 to 6027 had steam boilers installed.
The AS-16 was designed as an all-around useful locomotive, capable of freight or passenger service.
The engine had optional benefits such as a steam generator or dynamic brakes.
The AAR Type B truck warranted higher speed than its siblings, the AS-416 and AS-616, with their three axle trucks.