 Ford's most successful aircraft was the Ford 4AT Trimotor, often called the "Tin Goose" because of its corrugated metal construction.It used a new alloy called Alclad that combined the corrosion resistance of aluminum with the strength of duralumin.The plane was similar to Fokker's V.VII-3m, and some say that Ford's engineers surreptitiously measured the Fokker plane and then copied it.