Research on key technologies of aircraft Two Level Maintenance System

Aircrafts has performed Three Level Maintenance for a long time, and exposed many problems, such as maintenance system couldn´t fit the aircraft self´s technologies and logistical support demands, and led to the increasing of support costs. Based on it, we research the parts of key technologies on the Two Level Maintenance for modern aircraft, including support process model, simulation calculation and prediction analyses, find some useful results. The result of study is beneficial to simplified maintenance system of modern aircraft and realizing Two Level Maintenance System.