In this paper, we propose a performance evaluation process of aircraft blade antennas. The process consists of various sub-processes that should be considered for a stable communication link with the base station. The process begins with the settlement of the ground shape and size to evaluate the impedance matching characteristics of a stand-alone antenna. Next, the main communications area of the antenna is determined by considering a flight scenario, and then the minimum gain requirements of the antenna are derived in the operating frequency band. Finally, the proposed evaluation process is applied for a commercial aircraft blade antenna. The results demonstrate that the proposed process is suitable to be adopted for the evaluation of aircraft blade antennas.