| Designation | Nickname | Primary role |
|---|---|---|
| L-24 | Courier | U.S. Air Force Liaison (1942-1962) |
| L-28 | Super Courier | U.S. Air Force Liaison (1942-1962) |
| U-5 | Twin Courier | U.S. Air Force Utility (1952- Present) |
| U-10 | Super Courier | U.S. Air Force Utility (1952- Present) |
| U-24 | Stallion | U.S. Air Force Utility (1952- Present) |