# Optimizing Aviation Maintenance through Algorithmic Approach of Real-Life Data
## 2 Materials and Methods  
Since it is necessary to constantly optimize the processes and their progress in various areas of aviation, and as demonstrated in the previous chapter that one of the key areas is the maintenance of aircraft and their components, these proposed methods must or should be tested directly in practice. Then, it is possible to obtain the necessary data, indications, and information on how the application of advanced methods promotes development in this field. The methodology proposed by the authors for the implementation of individual processes, as well as the manual simplification of these processes for the rapid training of new maintenance technicians, was implemented as part of a practical experiment at Roeder Aero, a subsidiary of the Roeder Group. This is an aviation company that deals with aircraft maintenance and has a long history. As the research methodology and focus was precisely in the field of aircraft maintenance and the optimization of its processes in order to increase the safety and efficiency of these processes, the cooperation with this company was a very welcome choice. The selected company specializes in aircraft landing gear maintenance. The wheels are transported by trucks from various countries, but most often from the German headquarters. The process of developing the methodology began with an initial analysis of the processes taking place directly in the company when the necessary measurements were made to obtain data and information. Unfortunately, these measurements were partially limited in the context of the COVID-19 pandemic, which dealt a severe blow to the aviation industry, and whose consequences the aviation industry is still dealing with, as there were not as many orders and contracts as before the pandemic. Full operations resumed in early 2022, when deliveries of wheels for maintenance began to flow again. Overall, several measurements took place during the time horizon from January to May, which included a comprehensive study of the operation, the flow of the processes, and the processes themselves, as well as duration of each process. The duration of the individual processes was averaged and rounded from the measured times and is shown in Table 1. \begin{table}
\begin{tabular}{c c c} \hline
**Procedure Number** & **Process** & **Duration (Min.)** \\ \hline PN 1 & Disassembly main & 14 \\ PN 2 & Disassembly subassembly & 30 \\ PN 3 & Cleaning & 18 \\ PN 4 & Paint stripping & 33 \\ PN 5 & NDT—Eddy currents & 21 \\ PN 6 & NDT—Penetrant testing bolts & 12 \\ PN 7 & NDT—Penetrant testing bars & 12 \\ PN 8 & NDT—Magnetic particle testing—steel components & 12 \\ PN 9 & NDT—Magnetic particle testing bars & 12 \\ PN 10 & Inspection & 22 \\ PN 11 & Protective layer application & 60 \\ PN 12 & Assembly subassembly & 66 \\ PN 13 & Assembly main & 22 \\ PN 14 & Administration and certification & 6 \\ \hline Total & & 340 \\ \hline \end{tabular}
\end{table} 
Table 1: The duration of individual processes. It should be noted that the training of the workers, the training of the technicians, and their work on the individual processes is very demanding; the individual workers perform their work in a detailed and precise manner. This can be attributed to a well-established training program, according to which, the technicians can perform their work in a high quality and professional manner. The methodology itself aims to facilitate the education and training of new technicians directly on site, which significantly increases safety and efficiency in the execution of each process. The classical theoretical training and certification of the new technician is followed by practical familiarization, during which the technician is supervised in the individual processes by a so-called senior, who has performed this task for a long time and has sufficient task-related experience.