1.1 Recognition of the basic structure of the aircraft.mp4+ 1.2 Recognition of wing and aircraft tail section structure.mp4+ 1.3 Recognition of fuselage structure.mp4+ 2.1 Basic overview of aircraft weighing and balancing.mp4+ 2.2 Aircraft weighing method and balance control.mp4+ 3.1 Composition of aircraft hydraulic system.mp4+ 3.2 Maintenance of Aircraft Hydraulic System.mp4+ 4.1 Overview of landing gear system and recognition of retraction system.mp4+ 4.2 Recognition of turning and braking systems.mp4+ 5.1 Recognition of main flight control system.mp4+ 5.2 Recognition of auxiliary flight control system.mp4+ 6.1 Overview of cockpit environmental control system.mp4+ 6.2 Air cycle refrigeration system.mp4+ 7.1 Anti-icing and drainage system.mp4+ 7.2 Treatment of anti-icing valve failure.mp4+ 8.1 Overview of Fuel System and Fuel Storage Syste.mp4+ 8.2 Refueling, pumping system.mp4+