Loening Model 23
| Model 23 Air Yacht, S-1 | |
|---|---|
| S-1 of the USAAS | |
| Role | Flying boat airliner |
| National origin | United States |
| Manufacturer | Loening |
| First flight | 1921 |
| Number built | 16 |
The Loening S-1 Flying Yacht, also called the Loening Model 23, was an early light monoplane flying boat designed in the United States by Grover Loening in the early 1920s. The aircraft won the 1921 Collier Trophy.