Grumman FF
| FF / SF "Fifi" | |
|---|---|
| General information | |
| Type | Naval fighter |
| Manufacturer | Grumman |
| Designer | |
| Primary users | United States Navy |
| Number built | 116 |
| History | |
| Manufactured | 1932–1934 |
| Introduction date | June 1933 |
| First flight | 29 December 1931 |
| Retired | 1940 |
| Developed into | Grumman XSBF |
The Grumman FF "Fifi" (company designation G-5) is an American biplane fighter aircraft operated by the United States Navy during the 1930s. It was the first carrier aircraft with retractable landing gear. It was produced under license in Canada and known as the Goblin in Canadian service and Delfín (English: "Dolphin") in Spanish service.