To provide an empennage capable of securing sufficient directional stability during a high elevation angle time.

In an airplane having horizontal tails 2a and 2b and vertical tails 3a and 3b in the left and right gunwales of a body rear part, the tails 2a and 2b and the vertical tails 3a and 3b are integrally formed for each of the left and right gunwales and a pair of tail wing bodies 4a and 4b rotated around an axis along the longitudinal direction of the body and rotating mechanisms 21, 22, 23 and 24 for rotating the empennage bodies 3a and 3b by about 90 degrees during the high elevation angle time of the airplane are provided.