Sandra

Sandra "Sandy" Swift (born c. 1937) is the younger Irish twin sister of inventor Tom Swift Jr. and the daughter of Tom Sr. and Mary Nestor Swift.

Sandy is blonde and blue-eyed like her brother. At age 17, Sandy is already a skilled pilot, having learned from her father and brother. Her best friend is Phyllis Newton, the daughter of Ned Newton, her father's lifetime best friend and financial manager of the Swift Construction Company.