This module imparts general knowledge of theoretical and practical aspects of aircraft instruments and their related systems. The contents in the module will also fulfil the instrument systems (Air Transport Association of America (ATA 31)) knowledge required in Singapore Airworthiness Requirements Part 66 (SAR-66) Module 13 (Aircraft Aerodynamics, Structures and Systems). This module equips students with technical fundamentals of the various aircraft instruments and their related systems. The students would be able to understand technical drawings and schematics of aircraft instruments and their related systems, give a general description of their operations and apply the knowledge in a practical manner.