Abstract: This paper presents the application of durability design with 11 typical examples to the comprehensive administration of Y8 aircraft landing gear, and the implement to the modification design and manufacture of Y8 aircraft landing gear. Typical examples are as follows: Lubricators in high strength steel components, tubular strucutral components , highly stressed splines, shot peening before plating chromium surfaces, clevis corrosion protection, the use of photoelastic change mode as standard practice to determine stress levels, adoption of processes of shot peening, the surface machining of major forgings, groove weld surface machining of major welded assemblies, adoption of processes of oxidation resistant ,improvement of preservative processes. Subsequently, the effectiveness of the comprehensive administration, which was approved by fatigue test is obvious and comes up to our expectation.

Key words: durability design, tubular structural components, splines, clevis, shot peening