Research on the Highly Accelerated Stress Screening (HASS) Test Process of Civil Aircraft Airborne Equipment

The reliability of the airborne equipment of civil aircraft is highly concerned by the aircraft Original Equipment Manufacture (OEM), airlines, passengers and airworthiness authorities, and is the key to ensuring the safety and punctual operation of the aircraft. The Highly Accelerated Stress Screening (HASS) test is one of the effective test methods to ensure that the product reaches the expected reliability level, and it has been widely used in aviation, high-speed rail, automobiles and other fields. Based on the characteristics of civil aircraft airborne equipment, combined with the universal method of HASS test, this paper investigates the application process of HASS test on airborne equipment, and gives the method for determining the test object of airborne equipment by HASS, and the test of HASS, the principles of test profile design, follow-up verification and troubleshooting methods. The research can be applied to the HASS test work of civil aircraft airborne equipment, and guide the development of HASS test, so as to effectively propose defective products in the manufacturing stage and improve the reliability of the installed airborne equipment.