Research on Maintenance Interval Development of Hinge Mechanism of Civil Aircraft

Abstract

Hinge mechanism as a widely used motion mechanism in civil aircraft,the reasonable formulation of its maintenance interval plays an important role in ensuring the safe and economic operation of aircraft.By analyzing the MSG-3,China Civil Aviation Administration and Military Standard of China,and the influencing factors of maintenance interval,the formulation process of the maintenance interval of the hinge mechanism of civil aircraft is proposed.The maintenance interval formulation of flap hinge mechanism of an aircraft is taken as an example to verify the process.The results show that the proposed process in this paper is feasible,which can provide the basis for the reasonable formulation of maintenance interval and maintenance program of aircraft hinge mechanism.The inspection threshold and repeated inspection interval of accidental damage and environmental damage of the hinge mechanism are 5 calendar years,the inspection threshold of fatigue damage is 24 000 fh and the repeated inspection interval is 14 400 fh.

Keywords

• maintenance interval
• hinge mechanism
• scheduled maintenance development document
• significant structural item
• influence factor