Connects external AC ground power to the aircraft buses when available.

The Engine Anti-Ice (L and R), Wing Anti-Ice , and Probe Heat switches are found here. The 737-800 is highly susceptible to ice accumulation on the engine nacelle strakes, making these switches critical for winter operations. Window Heat switches protect the cockpit glass from fogging and impact damage.

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Upon stepping into a Boeing 737-800 cockpit, the overhead panel is immediately recognizable by its sheer number of controls. This is not merely a dashboard; it is the command center for the aircraft's non-flight-critical but absolutely essential systems. Located on the ceiling immediately above the pilots, the overhead panels consist of forward and aft sections, installed in the center of the cockpit above the windows.

: Detailed explanations of the Electrical Power , Fuel Systems , Air Conditioning , Hydraulics , and Pressurization.

Six toggle switches control two forward and two aft pumps for the Main Tanks, and two pumps for the Center Tank.

Critical Check: Ensure the "STBY PWR" (Standby Power) is guarded and in the AUTO position. Fuel Management

On newer 737-800s, the overhead structure was redesigned to remove the small "eyebrow" windows found on older models. This was done to reduce cockpit noise, heat, and maintenance costs related to window heating. Detailed Panel Resources

Boeing 737-800 Overhead Panel: The Complete Guide & Schematic Diagrams

Displays the temperature of the fuel, ensuring it does not reach its freezing point at high cruise altitudes. 4. Ice & Rain Protection

For those interested in learning more about the Boeing 737-800 overhead panel, there are several resources available for download:

Turn Left and Right IRS selectors from OFF to NAV. Input current GPS coordinates into the FMC. Environmental Controls: Turn Cabin Utilities ON →right arrow Set Passenger Signs (Seatbelts/No Smoking) to AUTO/ON.

Prevents fogging and ice on the cockpit windshields.