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f) When the intention of dispatching and releasing flight dispatchers is inconsistent, the idea of higher safety value should be adopted and reported to the company's duty manager for decision.

However, there are many factors to be considered in the dispatch and release, and the environment that affects the flight operation is also complicated. Let's mainly consider the following aspects [:":

Airport: an airport refers to a specified area on land or water (with buildings, facilities and equipment within

), which is used for aircraft landing, take-off and ground or water activities in whole or in part. Airports and their airspace are very important to the operation of aircraft. Therefore, for airlines to sign and release flights, it is necessary to make sure that the runways, taxiways and related navigation and visual aids and facilities of airports are airworthiness before signing and releasing flights.

route: the route refers to the scheduled flight route of an aircraft from one point (starting point) to another point (ending point) on the earth's surface. The operation of the route includes weather, geographical characteristics and other factors. Therefore, it is necessary to ensure that the relevant

operating conditions are seaworthy before dispatching flights.

aircraft: an aircraft is a heavier-than-air aircraft with wings and one or more engines, which can fly in the atmosphere by its own power. The influence of aircraft system on flight safety is self-evident. In the civil aviation system, aircraft < P > can be divided into MEL/CDL reserved aircraft, aircraft with special restrictions and normal aircraft. Mastering the airworthiness < P > status of aircraft plays an important role in the safe operation of airlines.

crew: flight crew refers to the pilots, navigators,

flight communicators, etc. who perform tasks in the aircraft-driven ship during the flight. The operation manual of S Airlines also defines the technical management regulations of the captain and co-pilot, the minimum configuration of aircraft

crew, the principle of cockpit collocation, and establishes the flight crew scheduling work procedures.

Meteorology: Generally speaking, meteorology refers to atmospheric physical phenomena such as clouds, wind, rain, snow, dew, frost, lightning and thunder

. In aviation meteorology, the weather phenomena such as clouds, visibility, wind direction, wind speed and other special weather that affect the flight operation, such as thunder, rain, snow and ice, play a vital role in the safe operation of aircraft. "].

Navigation notice: refers to the announcement of information about the establishment, status or changes of any aviation facilities, services, procedures or hazards in the form of telecommunications, which reflects the working conditions of navigation facilities, and the working conditions of airport pavement, taxiway and airport lights may have an impact on the airport's operating standards and route height. Getting

the latest notice in time plays a vital role in ensuring the safety of pilots and navigation personnel.

the main duty of flight dispatchers is to sign and release flights with the captain * * *, and the quality of flight dispatchers

directly affects the operation safety of aviation companies. In recent years, although the domestic aviation industry has developed rapidly, it has developed

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the human and material resources. It is the all-weather operation representative authorized by the company's top leaders, and the command center for the company to organize and implement flights and handle abnormal and emergency situations. Its timely and effective working procedures and information processing methods can ensure that the < P > certificate can effectively exercise the responsibility of operation control in time. Therefore, AOC is the hub of airline operation [2].

flight dispatch is the core of the whole AOC, and all decisions and information in operation (such as flight adjustment, information announcement, assignment of special charter flights, etc.) need the participation of the chief flight dispatcher in centralized discussion and decision-making.

In addition, the flight dispatcher must also release each flight and the captain

* * * according to the weather, aircraft and airport operating conditions.

shaking the captain on the ground

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S airline's operation manual stipulates that every flight of the company is authorized by the captain and the flight dispatcher, and they are responsible for whether they can correctly comply with the applicable China Civil Aviation Regulations

and the company's policies and operation specifications when exercising this authorization. This authorization includes the following meanings:

a) Confirm the pre-flight plan of each flight operation of the company;

b) before the company carries out each flight operation, verify that the operation carried out must conform to the specified operation conditions

and minimum standards for safe operation;

C) every flight of the company must be approved by the captain and the flight dispatcher with their signatures on the release form

. This form of approval for implementation and operation can also be expressed by signing on behalf of the authorized person (but not entrusting others to exercise

their right to sign and release), sending and releasing telegrams, or using voice communication or fax. When

expresses intention by voice communication, it must be recorded on the initial dispatch release form

in addition to recording and saving. In areas where there is a shortage of flight dispatchers or dispatch service agents, and it is impossible to get in touch with the captain by dispatching release telegrams and voice

communication, flight dispatchers can be dispatched to dispatch and release with the captain at random, or the captain can decide to release the aircraft for unplanned routes at his own discretion;

d) if, according to the judgment of the captain or flight dispatcher, it is considered that the flight can't run as planned or continue to run safely according to the situation when it was released

, the flight dispatcher shall make a decision to delay, cancel or re-dispatch the

flight and notify the captain in time. However, the cancellation of flight should be reported to the company's duty manager for approval;

e) For a certain flight, the modification of the initial dispatch release should usually be reconfirmed by the captain and the flight dispatcher

***. However, if conditions are limited and it is necessary to take prompt action, the pilot-in-command may decide to modify the initial release, but the party proposing the modification shall notify the other party as soon as possible;

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Introduction of Chapter 1

1.1 Research background

Article p>121.13 of CCAR-121-R4 "Rules for Examination and Approval of Operation Qualification of Large Aircraft Air Transport Carriers" of the Civil Aviation Administration of China stipulates that the certificate holder shall prove that there are enough

flight dispatch centers for its operation.

Article 121.531 of CCAR-121-R4 "Rules for Examination and Approval of Operation Qualification of Air Transport Carriers for Large Aircraft"

stipulates that the captain and flight dispatcher shall be jointly responsible for whether the flight planning, delay, dispatch or release comply with China

civil aviation regulations and the operation specifications of certificate holders; Monitor the progress of each flight;

analyze and release the information necessary for the flight safety.

China's air transport has developed rapidly, its international status has been significantly improved, its transport network has been continuously expanded, and its transport capacity has been significantly enhanced.

An air transport network with Beijing, Shanghai and Guangzhou as the center and a combination of trunk and branch lines has been formed.

In order to meet the demand of air transport market for transport capacity, domestic civil aviation uses financial leasing and operating leasing, etc.

Large and medium-sized trunk aircraft are added, and some regional aircraft are introduced, which makes the fleet scale grow continuously.

The Twelfth Five-Year Plan for the Development of Civil Aviation in China was officially promulgated. According to the plan, by 215

, the total turnover of civil aviation transportation will reach 99 billion tons kilometers, passenger transportation will reach 45 million passengers, and cargo and mail transportation will reach 9 million tons, with an average annual increase of 13%, 11% and 1% respectively.

S Airlines also mentioned in the planning that by the end of the 12th Five-Year Plan, the fleet size will reach 1 aircraft, including 93 aircraft with p>1-2 seats and 7 aircraft with less than 1 seats. From the perspective of operating scale, during the 12th Five-Year Plan period, S Airlines will realize the transformation from a medium-sized airline to a large-scale airline, and the scale of human resources will also increase with the increase of fleet number, and new systems and services will continue to expand, which will increase the requirements for the system.

The development of international civil aviation industry shows that when the fleet size of airlines reaches a certain level, the organization

institutions and information resources are greatly improved, so it is

particularly important to effectively integrate and optimize the existing human and information resources.

the establishment of AOC (Airlines Operation Center) is a common practice adopted by aviation companies at home and abroad to organize and implement the regular flight operation. AOC has effectively integrated the projects sponsored by the airline R

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Master's Thesis of Shandong University

JamesT. Luxhoj and TreforP. Williams. With the help of FM (Federal Aviation Administration),

an advanced decision-making system has been developed for aviation safety management and supervision by means of neural network theory and expert system, in order to extract

.

In 28, scholars from the University of Michigan in the United States studied the plans of aviation enterprises under uncertain factors.

Based on the study of the airline's frequent flight plans, with the aim of restoring the normal flight operation as quickly as possible, a rapid recovery model of the flight plans of aviation enterprises was established, the adjustment purpose of dealing with abnormal flights was summarized, and an optimized flight production plan model was put forward ['2].

1.2.2 Domestic related research status

With the continuous increase of domestic fleet size, China has become a veritable civil aviation power, which has the inherent conditions to leap from "big" to "strong", and the Civil Aviation Administration has also comprehensively promoted the strategy of building a strong civil aviation country. In the past

years, aviation professional standards have been continuously proposed or optimized, and SMS (Safety Management System) advisory notice has been promoted, which has provided a direction for the development of professional fields.

Wang Bo combined with the development of civil aviation, focused on the core competitiveness, studied the operation control AOC

of aviation enterprises, and studied the dispatching release and operation control, two important functions of airline dispatching work, focusing on the arrangement and adjustment of flight plans. From the perspective of operational research, he established a flight scheduling and adjustment number

model and related decision analysis, which provided theoretical reference for airline flight planning and adjustment.

Liu Jixin and others, according to the AOC characteristics of modern airlines and from the perspective of airline operation control, analyzed the human factors in flight dispatch and release according to the SHELL model, thus pointing out the causes of human factors.

Finally, they gave specific suggestions to reduce the impact of human errors on flight dispatch and release.

Simomo put forward the concept of safety management based on airline dispatch seats. This paper focuses on the analysis of the existing problems in the allocation of seats < P >, and according to the requirements of regulations, puts forward the idea of seat allocation in the dispatch room from the perspectives of reasonable process, improvement of rules and regulations, implementation of rules and regulations < P > standards and personnel's execution, and establishes a safety < P > management mechanism to improve safety quality [15].

Wu Feng abstracted, summarized and analyzed the urgent work of operation and management under the conditions of ice and snow, and obtained the matters needing attention in dispatching and releasing and the emergency measures for large-scale flight delay under the conditions of ice and snow.

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Master's Degree Thesis of Shandong University

, the new generation of decision support theory has also developed and expanded rapidly [2'].

the related research of decision-making theory in China began in the mid-198s, and the most widely used is the regional

development planning and related macro-decision support. Dalian University of Technology, Shanxi Institute of Automation and International Co., Ltd. < P > completed the overall development scale of Shanxi Province with relevant theories, and established an analytical research system based on decision support theory. This is a large-scale decision support system. This decision support system started earlier in China, and < P > it has a great influence. Later, research institutes or units such as Dalian University of Technology and National University of Defense Technology researched and developed a national decision support system to support the regional development planning. Tianjin University has established the journal Decision and Decision Support System, which has played a considerable role in promoting the construction and development of decision support theory in China [22]. Then, in 1994, Taiwan Province < P > scholar put forward a decision support system for route planning and flight schedule adjustment, and through the established < P > decision theory support model, it helped the aviation operators to determine the reasonable route regional layout and scientific flight schedule < P > and connection [23].

Generally speaking, flight dispatch is the core of airline operation control, and it also involves the most information and cross-departmental procedures. From the research at home and abroad, there are many studies on flight dispatch and release from a single angle, such as

weather, human factors, aircraft and navigation notices, but

flight dispatch is regarded as a system.

1.3 Research purpose and content

1.3.1 Research purpose

Based on decision support theory, this paper studies the dispatch release process and the dispatch release decision

from the point of view of S Airlines' dispatch business by means of analytic hierarchy process and fuzzy comprehensive evaluation. The purpose of this paper is:

(1

(2) For the new flight dispatch release process, the analytic hierarchy process is used to establish the weight of each release factor. Through the research on the release decision of flight dispatch, this paper evaluates the release decision every

1 by using analytic hierarchy process and fuzzy decision synthesis, calculates a risk value for each flight, and changes the original qualitative flight dispatch release decision

1 into a quantitative release decision.

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Master's Thesis of Shandong University

Xia Zhou and others summarized the low cloud and low visibility weather brought by heavy fog in winter, which seriously affected the safety and punctuality of flights and brought considerable hidden dangers to airlines. In view of the characteristics and formation mechanism of heavy fog, we stood in aviation. From the dimensions of space, time and historical data, different dispatch strategies are adopted for long routes and short routes,

so as to maximize the normal flight rate, reduce the return flight and standby flight, and improve the efficiency of aviation enterprises while ensuring safety. .

Suo Chaohua combined with specific cases, from the signing.