É um Sikorsky JRS-1 (como Terry eu pensei que era um PBY bem à primeira vista , essa articulação central é bastante singular)
Do site da Smithsonian você pode encontrar todas as informações aqui
This amphibious seaplane is the only aircraft in the Museum that was at Pearl Harbor, Hawaii, on December 7, 1941. Ten JRS-1s were at the U.S. naval base when the Japanese attacked during World War II. The Navy immediately sent these unarmed utility craft to search for the enemy fleet. The JRS-1 (used 1937-1944) is the military version of the Sikorsky S-43 "Baby Clipper." On the day of the attack, the plane wore a very colorful paint job: silver overall, black on the bottom, green tail surfaces, a red band around the rear of the fuselage, and the diamond-shaped squadron insignia behind the cockpit on each side. A few days after the attack, ground crew repainted the plane blue, but it has weathered and the original paint is peeking through. The JRS-1’s current condition is due to many years of storage outside. The Museum intends to conserve and restore the plane. Transferred from the U.S. Navy, Bureau of Weapons
