E-Flite Carbon-Z Yak 54 3X BNF Basic Airplane EFL10550 This is the E-Flite Carbon-Z Yak 54 3X BNF Basic Airplane. When the original E-Flite Carbon-Z Yak 54 3D was introduced, it broke new ground in out-of-the-box 3D performance expectations. Now it's back by popular demand, this version of the Carbon-Z Yak 54 3X is better than ever.The advanced AS3X (Artificial Stabilization  3-aXis) system built into the AR635 receiver is what gives the E-Flite Carbon-Z Yak 54 3X such