Individually Owned: 150,657
Corporate Owned: 137,281
Franklin 4Ac171 Aircraft Engine
| Manufacturer Name | Franklin |
| Model Name | 4Ac171 |
| Aircraft Engine Type | Reciprocating |
| Horsepower or Pounds of Thrust (For Reciprocating Engines) |
60 hp |
| Thrust | n/a |
| Number of aircraft regsitrations with this engine type | 2 |