Dubbed the "Gander UFO Case" by UFOlogists, and Canadian UFO buffs this vintage UFO report was made by the pilot of a U.S Navy R5D four-engine transport that was cruising at about 10,000 feet over the North Atlantic.
The sighting occurred on February 10th 1951. The pilot described observing what appeared to be a "circular, bright orange-red disk" while the plane was enroute from Iceland to Newfoundland, Canada.