Bellanca DecathlonBellanca Decathlon airplane model. For over twenty five years, the Bellanca Decathlon has dominated the American basic aerobatics scene. Boasting an impressive 1: 12 power to weight ratio and a robust airframe engineered to withstand 6 positive and 5 negative G forces, this aircraft delivers unmatched agility and strength. Whether you're mastering fundamental maneuvers or advancing to intermediate aerobatics, the Decathlon's exceptional performance