A human being is considered the vital factor in making environmental changes and developments; since his existence, he is dealing with the environment's components. The more increasing of days, the more controlling and authorizing upon the environment, particularly, after the scientific and technological advance have provided him more chance to make change in the environment. The main objective of this paper is to set up a proposed framework for controlling and managing environmental risks using the Lean Approach or the Lean Thinking which compromise between stipulations and theoretical dimensions and practical practices, for the purpose of achieving competitive sustainable ability and their reflection on supporting the competitive sustainable position of the air transport sector and also the airline companies. The researchers count on the inductive method through collecting and analyzing studies involved in the research field; using also the deductive method through counting on logical causal thinking at implementing the field study to presenting a proposed framework for managing and controlling environmental risks. The researcher also uses the Lean Approach for supporting the competitive sustainability of the air transport sector in the Arab Republic of Egypt. A final list of the field study data collection has been designed. In light of the results obtained from the initial exploratory study and three research axes, which are: The first axis: managing and controlling environmental risks in the air transport sector, and this axis is measured by a number (26 closed questions and one open question); the second axis: an introduction to rationalization in the air transport sector in the Arab Republic of Egypt, and this axis is measured by (27 closed questions and one open question); the third axis: the importance of sustainable competitiveness in the air transport sector, and this axis is measured by (30 closed questions and an open question), and the fourth axis: the link between managing and controlling environmental risks by using the lean approach to support the sustainable competitiveness of the air transport sector and this axis is measured by (11 closed questions). The researcher has used for designing the list, a mixed method that combines closed and open questions. Most of them are closed due to their ease of coding and analysis, in addition to adding an open question in the study axes, to explore the sample's information that has not been included in the closed question. It is recognized that the civil aviation sector plays a fundamental and pivotal role in the lives of peoples or countries (modern era). In terms of globalization, the importance of air transport is evident and reflected in the economic and social development of countries as well as the revitalization of tourism and international trade. Egypt Air is the main representative of the Egyptian air transport sector. It plays a prominent role in the Egyptian economy. For Egypt, the field of civil aviation (air transport) has a major role in advancing economic development, as tourism is considered as one of the most important sources of the national income and the increased foreign exchange. The study concludes with presenting a proposed framework for managing environmental risks by using the rationalization approach to support the sustainable competitiveness of the air transport sector in the Arab Republic of Egypt. The study recommends the necessity consider the approach of rationalization and benefit from its mechanisms in environmental risk management, for the purpose of strengthening sustainable competitiveness and interest in conducting more studies, research and continuous development in modernizing management systems, procedures and various works, relying as well, on new and renewable energy instead of using fossil energy.