| Name | Designator | Engine Manufacturer |
|---|---|---|
| 250 | L18 | HOWARD (2) |
| 350 | L18 | HOWARD (2) |
| Learstar | L18 | LEAR |
| C-56 Lodestar | L18 | LOCKHEED |
| C-57 Lodestar | L18 | LOCKHEED |
| C-59 Lodestar | L18 | LOCKHEED |
| C-60 Lodestar | L18 | LOCKHEED |
| L-18 Lodestar | L18 | LOCKHEED |
| R5O Lodestar | L18 | LOCKHEED |
| XR5O Lodestar | L18 | LOCKHEED |
| Learstar | L18 | PACAERO |