What is EFIS on Boeing 737? (Electronic Flight Instrument System)

The Electronic Flight Instrument System (EFIS) on the Boeing 737 is a crucial component that aids in flight navigation, providing pilots with essential information about the aircraft’s performance, position, and flight parameters. This advanced system replaces the traditional analog instrument panel with electronic displays, improving situational awareness and reducing pilot workload.

The EFIS on the Boeing 737 consists of several primary flight instruments, including the primary flight display (PFD), navigation display (ND), and engine indicating and crew alerting system (EICAS). These displays present crucial information such as altitude, airspeed, heading, vertical speed, navigation data, and engine parameters. By consolidating this information into digital displays, pilots can quickly interpret and respond to different flight scenarios.

Benefits of the Electronic Flight Instrument System

The implementation of EFIS on the Boeing 737 brings several significant benefits to the pilots and overall flight operations:

1. Enhanced Situational Awareness

The EFIS on the Boeing 737 provides pilots with a clear and concise presentation of critical flight information. The digital displays offer improved readability, reducing the risk of misinterpretation during critical phases of flight. Pilots can easily monitor aircraft performance, position, and navigation data all in one place, enhancing their situational awareness and decision-making capabilities.

Furthermore, the graphical representations of weather radar and traffic information on the EFIS display allow pilots to quickly identify potential hazards and take appropriate actions. This real-time data integration enhances safety and helps pilots mitigate risks associated with adverse weather conditions and congested airspace.

2. Reduced Pilot Workload

Prior to the adoption of EFIS, pilots had to scan multiple analog instruments to gather necessary flight information. This process required constant attention and could be time-consuming, leading to increased pilot workload. However, with the integration of EFIS on the Boeing 737, pilots can access all essential flight parameters on the electronic displays, reducing the need to scan multiple instruments.

The reduced workload frees up the pilots’ cognitive capacity, allowing them to focus more on making critical decisions and monitoring the overall flight situation. This improved efficiency can lead to safer and smoother flight operations.

3. Adaptability and Customization

The flexibility and adaptability of the EFIS on the Boeing 737 is a notable advantage. The digital displays allow pilots to customize the presentation of flight parameters, such as the size and arrangement of information. This adaptability ensures that pilots can configure the displays to suit their preferences and optimize their workflow.

In addition, the EFIS can display supplementary information that aids in various flight operations, including airport charts, approach charts, and system status pages. This customization capability enhances pilot efficiency and reduces the reliance on paper-based materials, making flight operations more streamlined and environmentally friendly.


The Electronic Flight Instrument System (EFIS) on the Boeing 737 is a groundbreaking technology that revolutionizes the way pilots receive and interpret flight information. With its digital displays and advanced capabilities, the EFIS enhances situational awareness, reduces pilot workload, and offers adaptability and customization options.

The integration of EFIS on the Boeing 737 is a testament to the continuous advancements in aviation technology, driving safer and more efficient flight operations. As aircraft systems continue to evolve, pilots can rely on the EFIS to provide critical data and support them in making informed decisions throughout their journeys.

For More: What is KHZ on Boeing 737? (Kilohertz)