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| Marinens Flyvebaatfabrikk M.F.4 | |
|---|---|
| Role | Trainer |
| Manufacturer | Marinens Flyvebaatfabrikk |
| First flight | 13 March 1918 |
| Introduction | 1918 |
| Retired | 2 October 1924 |
| Primary user | Royal Norwegian Navy Air Service |
| Produced | 1918–1921 |
| Number built | 6 |
| Developed from | Marinens Flyvebaatfabrikk M.F.1 |
The Marinens Flyvebaatfabrikk M.F.4 was a biplane floatplane built by the Royal Norwegian Navy Air Service aircraft factory Marinens Flyvebaatfabrikk from 1918. The aircraft was the first purpose-built trainer aircraft in Norwegian service and served until retired in October 1924.