In September 1924, the Naval Aircraft Factory was tasked with designing a long-range twin-engined flying boat, capable of flying the 2,400 mi (3,860 km) between San Francisco and Hawaii.
Pada bulan September 1924, Angkatan Laut Aircraft Factory ditugasi merancang terbang perahu bermesin ganda jarak jauh, mampu terbang 2.400 mil (3.860 km) antara San Francisco dan Hawaii.