The surge tank drain check valve also prevents fuel flow from main tank 1 and main tank 2 to the surge tank.

In the description of the airplane＇s Cabin Pressurization System, how this system ties in with the heating, ventilating, defrosting and air-conditioning systems shall be explained.

In the description of the airplane＇s Heating, Ventilating, Defrosting and Air-Conditioning Systems, how to get maximum benefit using the controls provided shall be explained.

In the description of the airplane＇s Electrical System, restrictions, warnings and operating tips shall be explained.

In the description of the airplane＇s Electrical System, use of ground power units and battery charging shall be discussed.

In the description of the airplane＇s Electrical System, circuit protection shall be explained.

In the description of the airplane＇s Electrical System, capacity and load shedding shall be discussed.

In the description of the airplane＇s Power Steering, if nose wheel power steering is installed: (a) the system shall be described. (b) how to use it shall be explained. (c) restrictions shall be discussed.

In the description of the airplane＇s Brake System, how to recognize impending problems and what to do if malfunctions occur shall be explained.

In the description of the airplane＇s Brake System, how to get maximum braking and maximum life out of the brakes shall be discussed.

In the description of the airplane＇s Hydraulic System, the primary and auxiliary systems shall be described.