What is JPR on Boeing 777? (Jumper)

The Boeing 777 is a popular wide-body commercial aircraft used by airlines around the world. It has been praised for its safety features, reliability, and spacious cabin. One important component of the Boeing 777 is the Jumper, also known by its abbreviation JPR. In this article, we will explore what a Jumper is and its significance in the functioning of the aircraft.

The Role of Jumper on Boeing 777

A Jumper on a Boeing 777 is an electrical connector used to establish a connection between two different systems or components. It acts as a bridge, allowing electrical signals to pass through and ensuring efficient communication between various parts of the aircraft. Jumpers can be found in several locations within the aircraft, including the cockpit, avionics bay, and wing areas.

The primary purpose of a Jumper is to facilitate the operation and functionality of various systems on the aircraft. It enables the exchange of data and signals between intricate network systems, ensuring coordination and synchronization of critical functions. By providing a secure and reliable connection, the Jumper plays a crucial role in the efficient performance of the Boeing 777.

Importance of Jumper in Aircraft Systems

The Boeing 777 incorporates a multitude of advanced systems and components to ensure safe and efficient flight operations. These systems rely on effective communication and data exchange, which is made possible by the Jumpers.

Jumper connections are vital for the proper functioning of the avionics system, which includes various electronic components such as flight instruments, aircraft control systems, communication systems, and navigation aids. The avionics system relies heavily on precise data inputs and reliable communication to provide accurate information to the flight crew. The Jumper connections enable seamless transmission of data, ensuring the integrity of the information and enhancing the overall situational awareness of the crew.

Furthermore, the Jumper connections facilitate the integration of different aircraft systems, such as the electrical power system. By establishing connections between different components, the Jumper ensures the harmonious operation of the electrical system, powering critical functions like lighting, communication, and auxiliary systems.

In addition to the avionics and electrical systems, Jumpers are also involved in the functioning of other crucial systems, including the hydraulic system and fuel system. The hydraulic system relies on precise control and communication to operate the aircraft’s control surfaces, landing gear, and other hydraulic-powered mechanisms. The Jumper connections ensure the smooth exchange of signals, allowing for precise control and operation of the hydraulic system.


The Jumper, or JPR, is an essential component of the Boeing 777 aircraft, enabling efficient communication and data exchange between various systems and components. Its role in facilitating the operation of critical systems, such as the avionics, electrical, hydraulic, and fuel systems, cannot be overlooked. The proper functioning of these systems relies on the seamless transmission of data, which is made possible by the Jumper connections.

As technology continues to advance, aircraft systems become increasingly complex, and the role of the Jumper becomes more critical. The reliability and performance of the Boeing 777, along with its excellent safety record, can be attributed in part to the seamless operation of the Jumper connections.

For More: What is FMU on Boeing 777? (Fuel Metering Unit)