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This paper aims to investigate the in-company training according to the technologically demanding and safety-critical feature of the aircraft industry. This study addresses to the tension between the structured and the more incidental part of in-company learning in their training and learning environment.

Against the background of concepts of workplace learning from vocational training research and concepts of the safety management system from safety research, aircraft companies from England and Germany were visited. Data from interviews with training managers and trainees as well as non-participant observations are analysed.

The findings show that workplace vocational learning in this industry is guided by different measures to design the learning environment to prevent purely incidental and informal knowledge acquisition. However, the formalisation of informal learning process leads to a high expenditure of material, personnel and time resources. The findings show that trainers and training managers working together internationally creatively manage different training systems. The training activities are designed to convey the values of safety culture like responsibility, accuracy, transparent communication and reporting. The requirements of the safety management system are also met through the training.

Challenges and tensions in the actual implementation of the training activities could not be identified. The people interviewed were selected by the companies, so there is a risk that certain perceptions are over-represented.

The results show that the safety-critical industry needs its own pedagogical approach to workplace learning, which is not based on independent work processes in the workplace. Insights can be drawn for in-company training in other safety-critical industries too. However, to enable effective in-company learning, which at the same time strengthens the safety culture of the company, many resources must be used. The companies must consider all dimensions of work from the individual level to the work structure level.

This paper discusses the tension between formal and informal learning and shows the specific design of this tension on the basis of a concrete industry for the specific needs of this industry. The results lead to the realisation that the general discussion about workplace learning must be viewed in a differentiated way depending on the industry.

The classification of aircraft failures has been a significant part of functional hazard analysis (FHA). Aiming at the shortcomings of the traditional FHA method in the evaluation of aircraft risk, the purpose of this paper is to put forward a new approach by combining the gray comprehensive relation calculation method in the gray system theory with the traditional FHA in order to deal with the problem of “little data, poor information.”

This paper combines FHA, 1–9-scale method and gray relation analysis. At first, aircraft failure scenarios are chosen and data from experts are collected; then gray system theory is applied to find the relevance of such scenarios. Finally, the classification according to relevance is determined.

In the past, “little data, poor information” made it difficult for researchers to implement FHA. In this paper, the authors manage to deal with the problem of “poor information” and provide an approach to find the seriousness of aircraft failure.

Due to the use of expert-evaluating methods, the classification of failures is still a little subjective and can be improved in this area. In the future, the method can be improved from the perspective of combining FMEA to analyze more complex indicators or using multisource heterogeneous solutions to solve fuzzy numbers, probabilities, gray numbers and indicators that cannot be assigned.

The paper uses FHA to divide the failure state and establishes a gray evaluation model of the aircraft failure state classification to verify the relevant method. Some aircraft safety design requirements are used to check the safety hazards of the aircraft during the design process, and to provide rational recommendations for the functional design of the aircraft.

Improving the safety of aircraft is undoubtedly of great practical significance and has become a top priority in the development of the civil aviation industry. In this paper, the FHA method and the failure state of the aircraft are studied. The original FHA method is innovated by using the gray system theory applicable to the poor information state. Therefore, to some extent, this study has significance for improving the safety of civil aircraft flight, ensuring people’s travel safety and enhancing the society’s trust in civil aviation.

The main innovation of this paper is integrating the FHA method and the gray system theory. This study calculates the comprehensive relation degree of each failure under different flight stages, and uses FHA to divide the failure state, and finally establishes a gray evaluation model of the aircraft failure state classification to analyze the different conditions of the landing gear brake system, so that it improves the present situation, and the problem with the character of “little data, poor information” can be addressed better.

Future very large transport aircraft (VLTA) represents an exciting and important development in civil aviation. The emergency evacuation of VLTAs in the event of a survivable crash poses a challenge for aircraft manufacturers and certification authorities. The information which has been gained from previous evacuation research has been re‐evaluated for VLTA. This included consideration of the aircraft configuration, crew factors and passenger issues.