The advantages of air transportation are as follows

(1) Come on. "Fast" is the biggest feature and advantage of air transportation. The cruising speed of modern jet passenger aircraft is 800 ~ 900 km/h, which is 5 ~ 10 times faster than cars and trains and 20 ~ 30 times faster than ships. The longer the distance, the more time can be saved by air transportation, and the more obvious the characteristics of speed.

(2) high liquidity. Planes flying in the air are much less restricted by route conditions than cars, trains and ships. It can connect two places at any distance on the ground and can fly regularly or irregularly. Especially for emergency tasks such as rescue and supply in disaster areas and first aid in remote areas, air transportation has become an indispensable means.

(3) Comfortable and safe. The cruising altitude of a jet airliner is generally around 10000m, and the flight is not affected by low airflow, so it is stable and comfortable. No worries, the cabin of modern civil aviation passenger plane has low noise and complete facilities such as catering, audio-visual and so on, which makes passengers feel comfortable. Due to the progress of science and technology and the strict requirements for the airworthiness of civil aviation passenger planes, the safety of air transportation has been greatly improved compared with the past.

(4) Short capital construction period and low investment. To develop air transport, as far as equipment conditions are concerned, we only need to acquire planes and build airports. Compared with the construction of railways and highways, it generally has the advantages of short construction period, less land occupation, less investment and quick results. According to the calculation, if a traffic line is established between two cities with a distance of 1000km, if the passenger capacity is the same, the investment of building a railway is 1.6 times that of opening a line, and it only takes two years to open a line.

(b) Disadvantages of air transport:

The main disadvantages of air transportation are that the cabin volume and load capacity of aircraft are relatively small, and the carrying cost and freight rate are higher than those of ground transportation. Because the flight is limited by meteorological conditions, it affects its normal punctuality. In addition, it is difficult to give full play to the advantages of fast air transport in short-distance transportation. Therefore, air transport is more suitable for long-distance passenger transport over 500km, as well as medium and long-distance transport of fresh, perishable and high-value goods with strong timeliness.

(3) Air transport has the following characteristics:

(1) commercial.

The product provided by air transport is a special product-"spatial displacement", and its product form is to change the spatial displacement of air transport objects, and the product units are "person kilometers" and "ton kilometers". The commodity attribute of air transport products is finally realized through the purchase behavior of product users in the air transport market.

(2) service.

Air transport industry belongs to the tertiary industry and is a service industry. It reflects the quantity of service through the amount of "space displacement" provided, and reflects the quality of service through the means and attitude of service. This attribute determines that the carrier must constantly expand its capacity to meet the growing demand of products in society, and follow the principle of "passengers first, users first" to provide safe, convenient, comfortable and punctual quality services for product users.

(3) international.

Air transportation has become the most important mode of transportation in modern society, and it is the link of international political exchange and economic cooperation. This includes both international friendly cooperation and fierce international competition. In terms of service, freight rate, technical coordination, operation management, formulation and implementation of laws and regulations, it is restricted by international unified standards and influenced by the international air transport market.

(4) Paramilitary.

Human aviation activities are first put into the military field, and then turned into civilian use. The mastery of air superiority in modern war is an important factor to gain the active position in war. Therefore, many countries stipulate in their laws that the fleet and related personnel owned by air transport enterprises serve the national economic construction in peacetime, while civil aviation, as a military reserve force, can be requisitioned by the state in wartime or emergency according to legal procedures to serve military needs.

(5) Capital, technology and risk are intensive.

The air transport industry is a high-input industry, and both the means of transport and other transport equipment are very expensive and costly. Therefore, its operating cost is very high, and the air transport industry has high technical requirements, complex equipment operation, high degree of interdependence between departments and high operational risks. No government or organization in any country has the corresponding financial resources to subsidize its own air transport enterprises like subsidizing urban public transport. Because of this, the air transport industry in all countries in the world is considered not to be a social welfare undertaking, and it must be profitable to maintain its normal operation and development.

(6) Natural monopoly.

Due to historical reasons such as huge investment, high concentration of capital, technology and risks, long payback period, strict qualification restrictions of air transport subjects and high market access threshold, the air transport industry has formed a natural monopoly in the development process.

Legal basis:

People's Republic of China (PRC) civil aviation law

Article 119 The shipper has the right to pick up the goods at the airport of origin or destination, or stop the transportation halfway, or demand that the goods be delivered to the consignee not specified in the air waybill at the destination or on the way, or demand that the goods be transported back to the airport of origin; However, the shipper shall not cause losses to the carrier or other shippers due to the exercise of this right, and shall pay the expenses arising therefrom.

If the shipper's instructions cannot be carried out, the carrier shall notify the shipper immediately.

If the carrier handles the goods according to the shipper's instructions and fails to ask the shipper to show the air waybill it has received, thus causing losses to the legitimate holder of the air waybill, the carrier shall bear the responsibility, but it shall not prevent the carrier from claiming compensation from the shipper.

When the rights of the consignee begin in accordance with the provisions of Article 120 of this Law, the rights of the shipper terminate; However, if the consignee refuses to accept the air waybill or the goods, or the carrier cannot contact the consignee, the shipper shall restore the right to dispose of the goods.