What is PVD on Boeing 737? (Paravisual Display)

Paravisual Display, abbreviated as PVD, is an innovative technology found in Boeing 737 aircraft. It is an advanced visual system that assists pilots during critical flight phases, providing them with essential information in a more intuitive and accessible way. The PVD is designed to enhance situational awareness and improve safety by presenting vital data directly in the pilot’s field of view. This article will delve deeper into the functions and benefits of the Paravisual Display on the Boeing 737.

Enhancing Situational Awareness

The Paravisual Display on the Boeing 737 significantly enhances situational awareness for pilots. Situational awareness refers to the ability of pilots to gather and comprehend information about their aircraft, environment, and the overall situation. It plays a crucial role in decision-making and reducing the risk of incidents or accidents.

The PVD enhances situational awareness by providing pilots with important information and data such as altitude, airspeed, vertical speed, heading, and navigation waypoints. This data is displayed directly in their line of sight through a transparent surface that overlays the outside view. By having this information readily available, pilots can quickly assess their current flight state and make informed decisions more efficiently.

Furthermore, the Paravisual Display also incorporates terrain and obstacle awareness, displaying terrain profiles and potential obstacles in the pilot’s field of view. This feature is particularly useful during takeoff and landing, where pilots need to be aware of any potential obstructions that could impede their safe operation.

Improved Safety and Reduced Workload

One of the primary benefits of the Paravisual Display on the Boeing 737 is improved safety. By providing pilots with real-time information and enhanced situational awareness, the PVD helps them identify and mitigate potential risks more effectively. It allows pilots to monitor essential flight parameters without diverting their attention from the outside view.

Additionally, the Paravisual Display contributes to a reduced workload for pilots. It consolidates critical flight information and presents it in an intuitive and easily interpretive format. This reduces the need for pilots to constantly refer to various instruments and gauges, enabling them to focus more on flying the aircraft safely and efficiently.

With this in mind, it’s worth noting that the Paravisual Display is not intended to replace traditional instruments and gauges. Instead, it complements them by providing an additional layer of information. Pilots still rely on conventional instruments for primary flight data, while the PVD acts as a secondary source of information that enhances their situational awareness.

Integration and Implementation

The Paravisual Display is seamlessly integrated into the flight deck of the Boeing 737. It is implemented as a head-up display (HUD) system, where the necessary information is projected onto a transparent surface in front of the pilot. The display is designed to minimize distractions and ensure that the information is easily legible and perceivable in varying lighting conditions.

Boeing has collaborated with leading aerospace technology companies to develop and refine the Paravisual Display system. Technologies such as augmented reality and advanced image processing algorithms are utilized to present the information on the transparent surface with high clarity and resolution.

The implementation of the Paravisual Display on the Boeing 737 is a testament to the ongoing advancements in aviation technology. It is a prime example of how innovation can enhance safety and efficiency in aircraft operations. With the PVD, pilots can access critical information in a more intuitive and accessible manner, ultimately leading to safer and smoother flights.


The Paravisual Display, or PVD, on the Boeing 737 revolutionizes the way pilots perceive and interact with critical flight information. By enhancing situational awareness, improving safety, and reducing pilot workload, the PVD has become an essential component of modern aircraft systems. Its integration into the flight deck of the Boeing 737 signifies a significant leap forward in aviation technology.

As aviation continues to evolve, technologies like the Paravisual Display will play an increasingly important role in ensuring safer and more efficient flights. The combination of traditional instrumentation and advanced visual systems represents the future of cockpit design and pilot assistance. With the Paravisual Display, pilots have the ability to make split-second decisions based on real-time data presented directly within their line of sight.

For More: What is ADM on Boeing 737? (Air Data Module)