This lower section manages cabin environment signaling and internal/external lighting matrices.
: The bottom section of the forward panel houses exterior light switches (Taxi, Landing, Strobe) and the APU Start Selector .
Searching for "Boeing 737 cockpit checkout" on sites like SlideShare provides a good overview of the panel structure Slideshare . Conclusion boeing 737800 overhead panel pdf new
To appreciate a proper PDF guide, you must understand the panel's logical layout. It is broken down into distinct zones.
Prevents fogging and ice on the cockpit windshields. This lower section manages cabin environment signaling and
Manages backup AC/DC power via the static inverter and battery. Normal position is AUTO.
The electrical panel contains the Battery Switch , Standby Power switch, and Generator Drive Disconnects (GEN1 and GEN2). A notable feature is the TR UNIT (Transformer Rectifier) lights, which indicate DC power availability. During normal flight, the Bus Transfer and Bus Tie switches remain closed, allowing automatic load sharing. Pilots are trained to monitor the BAT DISCHARGE light during engine start. Conclusion To appreciate a proper PDF guide, you
| Switch/Light | Normal Position | Function | |-------------|----------------|----------| | A/P STAB TRIM | NORMAL | Autopilot stabilizer trim cutout | | MACH TRIM | OFF | Mach trim system (typically off for 737NG) | | FEEL DIFF PRESS Light | OFF (no light) | Indicates elevator feel system anomaly | | SPEED TRIM FAIL | OFF | Speed trim system fail | | FLT CONTROL A/B | ON (two switches) | Hydraulic power to flight controls |
The 737-800 overhead panel is organized functionally, not alphabetically, following Boeing’s “flow” concept. Pilots are trained to perform memory items and checklists by tracing a logical pattern—typically starting at the top rear and moving forward and down. The panel is bisected roughly by the cockpit centerline, with many critical switches positioned for access by both crew members. Color coding is critical: protective covers are often red (fire/engine), switches are black or grey for normal operations, and white or magenta indicates automated positions. The dominant design philosophy is “lights out means systems normal”—an illuminated switch typically indicates a non-normal or selected-off condition.