Cad has considered the filings on the merits of each application , having regard to established policies and relevant provisions in the concerned bilateral air services agreements , including the basis for determining the proposed surcharge ; whether the airline concerned had levied or proposed similar surcharge on other routes ; the period for which the surcharge would remain valid ; overall operating costs of the airlines concerned ; interests of the travelling public ; and tariffs ( including surcharges ) of other airlines operating on the same routes 在审批时，民航处乃依据既定之政策，以及有关双边民用航空运输协定的相关条文作决定，包括建议收取附加费的决定基准；有关航空公司于其他航线是否已经徵收或建议收取类似的附加费；徵收附加费的有效期；有关航空公司的整体营运成本；对乘客的影响，以及其他航空公司营运同一条航线所订的运价（包括附加费） 。
After reunification , in accordance with the relevant provisions of the basic law , the hksarg concluded 38 bilateral agreements with foreign states , including 16 on air services , four on overflight , five on visa abolition , 12 on reciprocal juridical assistance , and one on investment promotion and protection 回归以后，按照《基本法》的有关规定，特区政府与外国签署了38份双边协定，包括民用航空运输协定16份、民航过境协定四份、互免签证协定五份、司法互助协定12份及促进和保护投资协定一份。
