Causes And Treatment Of AHRS Failure In Primary Training Aircraft

The primary training aircraft C172R is equipped with the GRS77 Attitude and Heading Reference System (AHRS), which is an essential instrument on the aircraft used for measuring, calculating, and providing flight attitude and heading information. It can real-time measure parameters such as the carrier's three-axis attitude angle information and magnetic field intensity, providing critical flight parameters for flight trainees. Its reliability and stability are particularly important. However, AHRS failures are common during flight training, posing challenges to the safety of flight training. The paper extensively analyzes the types and possible causes of AHRS failures in the primary training aircraft, studies the impact of AHRS failures on flight training, examines the changes in flight parameters after failure, and explores strategies for pilots to cope with failures.