What is MTRS on Boeing 737? (Meters)

The Boeing 737 is a popular commercial aircraft that has been in service since its first flight back in 1967. It is a narrow-body twinjet aircraft that can carry between 110 to 210 passengers, depending on the variant. One of the important aspects of the Boeing 737, like any other aircraft, is its instrumentation, which includes various meters for monitoring and controlling different systems. In this article, we will explore the meters on the Boeing 737 and their significance in ensuring safe and efficient operations.

The Role of Meters on Boeing 737

Meters play a crucial role in providing pilots with essential information about the aircraft’s performance, systems, and overall health. The Boeing 737 is equipped with various meters, including altimeters, airspeed indicators, fuel gauges, and engine instruments.

One of the key meters on the Boeing 737 is the airspeed indicator, which displays the aircraft’s speed in knots or mach number. This meter helps pilots maintain the recommended airspeed during different phases of flight, such as takeoff, climb, cruise, and descent. By monitoring the airspeed, pilots can ensure that the aircraft is operating within safe limits and avoid potential speed-related issues.

The altimeter is another critical meter on the Boeing 737, which provides information about the aircraft’s altitude above sea level. It helps pilots accurately determine their vertical position and stay within designated altitude limits. Altitude changes are crucial during takeoff, landing, and cruising, and the altimeter assists pilots in maintaining proper separation from other aircraft and avoiding collisions.

The fuel gauges are important meters that provide pilots with accurate information about the aircraft’s fuel quantity. They help pilots monitor fuel usage and plan for refueling during long-haul flights. By constantly monitoring the fuel gauges, pilots can ensure that they have sufficient fuel for the intended flight and take appropriate actions if any discrepancies are observed.

Engine instruments, including rpm (revolutions per minute) indicators, oil pressure gauges, and temperature gauges, are also vital meters on the Boeing 737. They provide pilots with real-time information about the engines’ performance, allowing them to detect any anomalies or potential issues promptly. Monitoring the engine instruments helps pilots take necessary actions to maintain the engines’ optimal function and prevent any failures that could compromise flight safety.

In addition to these meters, the Boeing 737 also features other instruments such as attitude indicators, heading indicators, and navigation displays. These meters assist pilots in maintaining the desired flight attitude, tracking the aircraft’s heading, and navigating along the intended route.

Overall, the meters on the Boeing 737 form a crucial part of the aircraft’s instrumentation system, providing pilots with vital information for safe and efficient flight operations.

MTRS: Monitoring the Distance

Among the various meters on the Boeing 737, the MTRS (Meters) plays a significant role in providing information about the aircraft’s distance traveled. The MTRS, also known as the Distance Measuring System (DMS), is an important component of the aircraft’s navigation system.

The MTRS on the Boeing 737 uses radio signals to measure the distance from the aircraft to a ground-based navigation station. It operates on the principle of time-of-flight, where the time taken for the radio signal to travel from the aircraft to the station and back is used to determine the distance.

The MTRS works in conjunction with other navigation systems, such as GPS (Global Positioning System), to provide precise and accurate distance information. By combining the data from multiple navigation sources, the MTRS helps pilots navigate along their planned route and maintain the desired track.

The MTRS also assists pilots during approaches and landings. It provides distance information during the final stages of landing, allowing pilots to accurately judge the remaining distance to the runway. This information is essential for establishing a stabilized approach and ensuring a safe touchdown.

Furthermore, the MTRS is used for conducting required navigation performance (RNP) approaches, which are precision approaches that rely on accurate distance measurements. RNP approaches enhance the aircraft’s approach capability, allowing for more efficient operations and increased airport accessibility.

It is important to note that the MTRS is just one of the many navigation systems used on the Boeing 737. It works in conjunction with other instruments and systems to ensure accurate navigation and safe flight operations.


The meters on the Boeing 737, including the MTRS, play a vital role in providing pilots with critical information about the aircraft’s performance, systems, and navigation. These meters help pilots maintain safe speeds, altitudes, and fuel levels, detect engine anomalies, and accurately navigate along planned routes.

As technology continues to advance, the instrumentation systems on aircraft like the Boeing 737 are constantly evolving to incorporate new features and enhance safety. Pilots rely on these meters to make informed decisions and ensure the smooth and efficient operation of the aircraft.

Understanding the various meters and their functions on the Boeing 737 provides a glimpse into the complexity of modern aircraft systems and the importance of accurate and reliable instrumentation for safe aviation.

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