In the law theory and the law practice, the concept and character of the contract for civil aviation passenger transportation still remains unclearly. 民用航空旅客运输合同非常重要，但是它的概念，特点却不十分明确。
Air passengers and their carry-on luggage must undergo safety inspection before boarding unless otherwise stipulated by the State. 航空旅客及其携带的行李物品在登机前应当接受安全检查，但国家另有规定的除外。
