# Optimizing Aviation Maintenance through Algorithmic Approach of Real-Life Data
## 3 Results  
Aviation maintenance and repair is a complex process that is subject to strict and precise requirements to ensure the safety of passengers and aircraft crew. Maintenance is an essential part of aircraft airworthiness criteria. Its main objective is to ensure a regularly maintained, functional, and safe aircraft. Proper maintenance is a fundamental factor contributing to the high level of safety we experience today. On the other hand, improper maintenance can have tragic consequences. When maintaining and repairing their fleet, airlines take into account manufacturers' instructions and recommendations, as well as the standards of international organizations, in order to improve the quality and safety of the flight. Aircraft equipment, no matter how good and reliable, needs regular maintenance. Therefore, it is crucial to continuously optimize and streamline maintenance processes as the technological and technical maturity of aviation evolves. Such implementation of modern and advanced methods must not necessarily take the form of software or hardware improvements to the process alone, but also through the creation and optimization of operational procedures and proven methods. In this context, we focused on developing an optimized methodology for well-specified aircraft maintenance processes that provides immediate access to well-defined procedures. The whole process starts with the arrival of the wheels at the company, where the shipment is unloaded on the technical ramp, and officially accepted together with the documentation. The further procedure depends on the definition of parameters by the manufacturer. Within the MRO processes, it can be a complete overhaul or smaller periodic inspections depending on how many cycles have passed since the last inspection. Standard overhaul is performed, on average, every 300 cycles, with the term cycle referring to the number of take-offs and landings, as this activity puts the most stress on the wheels and their components along with the chassis. The wheels are packed in wooden boxes lined with insulating material to ensure safe transportation to and from the maintenance site. After the wheels are removed, the individual main parts must be separated. The wheel is disassembled using a special assembly station wheel lift, the diameter of which can be adjusted to fit all types of wheels being serviced. The wheel is disassembled into two parts, the stator and the rotor. The interaction of these parts can be thought of as the movement of a gear in an assembly. When the static part, Figure 2A, expands during a sudden wheel seal or braking, the individual pistons push between the rods on the inboard half of the rotor, Figure 2B red circle, and prevent any movement until the entire assembly comes to a stop. After disassembling the main assembly, the rotor part of the wheel is disassembled into two parts, the inboard and outboard half, Figure 2B. Next comes the disassembly of the assembly, where the stator and rotor are further disassembled into individual components. In the inboard part of the rotor, the individual bars that ensure that the wheel stops during braking are the most stressed. A heat shield is fitted between the individual bars, which has the task of thermally insulating and protecting these components, as various thermodynamic processes take place when the kinetic energy is dissipated. After the main assembly and the subassembly have been completely disassembled, the individual parts are subjected to nondestructive testing. First, the stator and the rotor are subjected to an NDT test in the form of an eddy current inspection. The parameters of the individual tests must always be specified for a particular wheel, and these parameters are determined by the manufacturer. Eddy current testing is performed at a special workstation, which must be calibrated with a calibration disc at the beginning of operation and after the last test. The function of the test is to place the individual parts of the wheel on an oval base.