the first boeing 737-100 prototype was ready in 1966. it made its first flight on april 9, 1967. on december 15, 1967 the federal aviation administration said that the -100 was allowed to fly with passengers. they gave it the type certificate a16we. lufthansa got its first 737 on december 28, 1967. on february 10, 1968, lufthansa became the first non-american airline to fly a new boeing aircraft. it was the only large airline which bought the 737-100. only 30 -100s were ever made.