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阿里安火箭第四次试飞因欧洲海事通信卫星故障和雇员罢工等问题而推迟到1981年12月20日发射。笫一次推迟是由于欧洲海事卫星的上行线和下行线交调干扰问题引
The fourth flight of the Arrion rocket was postponed until December 20, 1981, due to issues such as the failure of the European maritime communications satellite and the strike of employees. The first delay was due to the interference of uplink and downlink of the European maritime satellite