The Vultee BT-13, also known as the "Vultee Vibrator," was a primary trainer aircraft used by the United States during World War II. Designed in the 1930s, it featured a low-wing monoplane design and was powered by a Pratt & Whitney R-985 radial engine. The BT-13 was instrumental in training thousands of pilots for military service. With its tandem seating arrangement, the BT-13 allowed instructors to sit behind students, providing direct supervision during flight training. The aircraft was known for its durability and ease of handling, making it an effective tool for teaching basic flying skills before pilots transitioned to more advanced aircraft like the North American P-51 Mustang.