For student pilots just starting their flight training, flying is not only about controlling the aircraft, but more importantly about learning how to read aeronautical charts, plan routes, and navigate safely in the air. Before GPS and modern avionics became widely available, pilots relied heavily on basic manual navigation tools, which remain a core part of flight training today.
Among these tools, two are considered the most fundamental but essential for student pilots: the Flight Computer and the Navigation Plotter. They are commonly included in ground school, flight planning practice, and training programs for obtaining a student pilot certificate, where they are used as standard flight training materials for learning the fundamentals of navigation.
Circular Aviation Plotter (Circular Plotter / Flight Computer)
The circular aviation plotter, commonly known as the E6B Flight Computer, is a classic flight calculation and navigation tool. It has a circular, rotating design that resembles a round calculator disc. It is usually made of transparent or semi-transparent plastic and printed with multiple scales, wind correction charts, and calculation dials used for manual flight-related computations.
What is It?
The E6B Flight Computer consists of two main sections:
- Front side (wind side / wind calculation disc): used for wind correction angle and heading adjustment calculations
- Back side (calculation side): used for basic flight calculations such as time, speed, distance, and fuel consumption
The overall structure is a rotating circular device. By aligning different scales, users can perform various flight-related calculations manually.
What is Its Function?
The main purpose of the circular aviation plotter is to help pilots with flight planning and navigation calculations, including:
- Calculating ground speed
- Estimating time en route
- Calculating fuel burn
- Performing wind correction angle adjustments
- Supporting route planning and basic performance analysis
In simple terms, it is a tool used to manually calculate flight data when no electronic systems are available.
Where is It Used?
This tool is mainly used during the flight training stage, commonly in:
- Ground school courses at flight schools
- Flight planning exercises
- Private Pilot Certificate (PPL) training programs
- Written and oral exam preparation for student pilots
In some standardized training systems such as those under the Federal Aviation Administration, it is considered a basic training tool for student pilots.
How is It Used?
Using the E6B Flight Computer generally involves the following steps:
- Input known flight data (such as wind speed, heading, and airspeed)
- Rotate the disc or align the corresponding scales
- Read the calculated result (such as corrected heading or ground speed)
- Apply the result to flight planning or route design
Although many of these calculations can now be done by electronic devices, student pilots are still required to use the E6B manually during training in order to understand the logic behind flight calculations.
Navigation Plotter (Straight Plotter / Ruler-Type Plotter)
The Navigation Plotter is a manual measurement tool used on aeronautical charts. It is typically a long, straight, transparent plastic ruler. During use, it is placed directly on top of a chart so that information can be read through its built-in scales.
Its main functions are twofold: first, measuring route distance, such as the flight distance between two airports; second, reading course headings, for example determining whether the aircraft should fly along 090° or 240°. The ruler is usually printed with a 360-degree protractor scale, as well as distance scales based on chart proportions (such as nautical miles or statute miles), allowing direct conversion on the map.
In flight training, although its structure is simple, it plays a critical role. Student pilots rely on it in early training stages to complete basic navigation exercises, including drawing routes on paper charts, calculating direction and distance, and developing the fundamental navigation logic of “read the map → determine heading → measure distance”.
What Does It Look Like?
The Navigation Plotter typically has the following features:
- Transparent ruler design (can be placed directly on charts)
- 360-degree protractor scale (for reading headings)
- Multiple distance scales (for converting flight distance)
- Some models feature dual-sided design (e.g., nautical miles on one side and statute miles on the other)
👉 Visually, it looks like a “transparent ruler with angular markings”.
How is It Used?
The usage is quite simple:
- Place the ruler on the aeronautical chart
- Align the start point and destination
- Read the heading angle
- Measure the distance using the scale
👉 No complex calculations are required—mainly “visual alignment + measurement”.
Where is It Used?
The Navigation Plotter is mainly used in the early stages of flight training, such as:
- Ground school courses at flight schools
- Learning how to read aeronautical charts
- VFR route planning exercises
- Student pilot certificate preparation and training
In the United States flight training system, such as courses under the Federal Aviation Administration, it is commonly included as a standard basic navigation training tool to help student pilots complete manual route planning exercises.
Are They Still Useful in Today’s Automated Aviation?
With the widespread use of GPS navigation systems and modern avionics (glass cockpit technology), pilots today rely far less on manual calculations and paper aeronautical charts during actual flight operations. Most route planning and navigation data can now be completed directly through electronic flight systems.
However, in the flight training stage in 2026, these two tools still serve a clearly defined and important purpose.
First, in flight school ground training, student pilots must understand the fundamentals of how flight navigation actually works. This includes concepts such as why an aircraft drifts off course, how wind affects heading, and how distance and time are calculated. If these processes are fully handled by automated systems, it becomes difficult for students to truly understand the underlying logic of navigation.
Second, during training and examinations, student pilots are still required to complete manual navigation exercises. This includes measuring distances on aeronautical charts, calculating headings, and building basic flight plans using traditional tools. These exercises are designed to ensure that pilots can still perform basic navigation independently in case electronic systems fail or become unavailable.
In other words, while modern aviation can “navigate automatically,” flight training in today still requires pilots to understand how navigation works. These tools are the foundation for building that understanding.
Conclusion
The E6B Flight Computer and the Navigation Plotter work together as two foundational tools for student pilots. One is used for flight data calculation and the other for aeronautical chart measurement and route planning. Together, they form the basic foundation for understanding navigation principles in flight training.
Their value is not to replace modern avionics systems but to help student pilots build essential flight logic. This includes learning how to start from a chart, determine a heading, calculate distance, and turn that information into a complete flight plan.
Even in today’s highly automated aviation environment in 2026, this type of fundamental training remains an important part of pilot education.
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