Individually Owned: 150,657
Corporate Owned: 137,281
Allison 250 Ser Aircraft Engine
| Manufacturer Name | Allison |
| Model Name | 250 Ser |
| Aircraft Engine Type | Reciprocating |
| Horsepower or Pounds of Thrust (For Reciprocating Engines) |
420 hp |
| Thrust | n/a |
| Number of aircraft regsitrations with this engine type | 20 |