Introduction. Fatigue Design Philosophy of Aero Engine Combustor Casing. Development of Test Facility and Test Setup. Manufacturing of an aero engine combustor casing, its experimental evaluation of fatigue life and correlation with numerical results. Re assessment of Fatigue Life of the Modified Combustor Casing. Safety Test on Modified Combustor Casing. Effect of Fatigue on Proof Strength of an Aero Engine Combustor Casing. Conclusions.