After World War I, Packard used its experience with the Liberty engine to design the A-1500. The A-1500 was first used by the U.S. Army in 1924.

models

• 1A-1500: 510 hp (380 kW)
• 2A-1500: 525 hp (391 kW)
   

specifications

• V-12 piston engine
• Liquid cooled
• Displacement 1,530 cubic inches (25 litres)

used by

• Loening OL-1