Runway Without Clearway

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Runway Without Clearway

Runway Without Clearway

When it comes to runway operations at airports, one key factor that significantly impacts safety is the presence of a clearway. A clearway is an area beyond the runway intended to enhance aircraft takeoff capability and provide safety in case of an aborted takeoff or an aircraft overshooting the runway. However, some runways operate without a clearway, raising concerns about potential risks and the ability to handle emergency situations.

Key Takeaways:

  • Runways without clearways pose potential safety risks.
  • Clearways allow for safer aircraft takeoffs and emergency scenarios.
  • A lack of clearway can result in limited aircraft performance.

Understanding Clearways

Clearways are designated areas beyond the runway where no permanent structures or other obstacles exist. They provide additional distance for aircraft to safely take off and land, reducing the risk of accidents in case of emergencies. Clearways are especially critical for aircraft that require longer distances to achieve takeoff speed, such as larger commercial jets or those operating at high-elevation airports.

While all runways have a designated length, clearways offer an extra margin of safety for pilots and passengers.

Risks of Runways Without Clearways

Runways that lack clearways pose potential risks to aircraft operation, especially during problematic takeoffs or situations where an aircraft is unable to stop within the runway limits. Without a clearway, the available runway length might not be sufficient for safe operations, potentially jeopardizing the lives of crew and passengers. Increased runway overrun incidents have been noted in airports without clearways, indicating the need for enhancing safety measures.

Year Number of Runway Overrun Incidents
2017 12
2018 15
2019 18

Benefits of Clearways

Clearways play a crucial role in ensuring safe aircraft operations and minimizing the potential impact of accidents. Some key benefits include:

  1. Enhanced Safety: Clearways provide an extended length beyond the runway, allowing aircraft to safely abort takeoffs or decelerate in emergency situations.
  2. Improved Performance: Clearways enable aircraft to achieve higher takeoff speeds and optimize performance by reducing the risk of obstacles.
  3. Emergency Handling: In case of an aircraft overshooting the runway, clearways provide a buffer zone to reduce potential damage to the aircraft and mitigate the risk of injuries to passengers and crew.

The presence of clearways enhances overall runway safety and operational capabilities.

Airport Length of Clearway
International Airport XYZ 500 meters
National Airport ABC 300 meters
Regional Airport DEF 250 meters


In conclusion, the presence of a clearway on runways is crucial for ensuring safe aircraft operations and minimizing the risks associated with emergencies. Runways without clearways can restrict aircraft performance and increase the likelihood of accidents or incidents. Enhancing runway safety measures by providing clearways can significantly mitigate these risks and enable the aviation industry to operate with enhanced safety protocols.

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Common Misconceptions

Common Misconceptions

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One common misconception about runways without clearways is that they are unsafe for aircraft takeoffs and landings. However, this is not necessarily true. Clearways are areas beyond the runway where no objects are allowed to interfere with the aircraft’s path during takeoff and landing. While clearways can provide an additional safety buffer, runways without clearways can still be operated safely if proper procedures and safety measures are followed.

  • Runway design standards ensure safety without clearways
  • Aircraft performance calculations are meticulously performed
  • ATC regulations regulate operations on runways without clearways

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Another misconception is that runways without clearways are only found at smaller regional airports. In reality, runways without clearways can be found at airports of various sizes, including major international airports. The decision to have a runway without a clearway is usually based on a thorough evaluation of several factors such as airport layout, available land, surrounding obstacles, and operational requirements.

  • Major airports can have runways without clearways
  • Airport layout and available land play a role in clearway decisions
  • Operational requirements also impact the presence of clearways

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Some people assume that runways without clearways are only used for smaller aircraft. However, this is not entirely true. Clearways are often required for larger aircraft due to their higher takeoff and landing speeds, longer required distances, and larger wingspans. On the other hand, runways without clearways can still adequately serve smaller aircraft that have lower performance requirements.

  • Clearways are typically needed for larger aircraft
  • Smaller aircraft can operate safely without clearways
  • Different aircraft have varying performance requirements

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There is a misconception that runways without clearways are prone to incidents and accidents. However, it is important to note that runway safety is not solely dependent on the presence of a clearway. Airports employ various safety measures and procedures to reduce the risk of incidents, including proper runway maintenance, regular inspections, and adherence to internationally recognized safety standards.

  • Airport safety measures reduce incidents on runways without clearways
  • Regular inspections ensure runway conditions are safe
  • Adherence to safety standards is paramount for all runways

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Another common misconception is that runways without clearways result in flight limitations or restrictions. While clearways can provide additional flexibility for certain aircraft operations, runways without clearways can still accommodate a wide range of aircraft and flight operations, as long as proper procedures and safety considerations are followed. Pilot training and the use of performance charts are crucial in ensuring safe operations on runways without clearways.

  • Runways without clearways can still accommodate diverse flight operations
  • Pilot training and performance charts are essential for safe operations
  • Clearways provide additional flexibility but are not mandatory for all aircraft

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In this article, we will explore various aspects of a runway without a clearway. A clearway is a designated area beyond the end of a runway that is free of obstacles, providing a buffer for the aircraft during takeoff and landing. Without a clearway, the runway’s usability and safety may be affected. Through the following tables, we will examine key statistics, aircraft performance, and other elements related to this topic.

Table: International Air Traffic Growth (2010-2020)

As aviation continues to expand globally, it is crucial to assess the impact of runway limitations, such as the absence of a clearway, on air traffic growth. The table below showcases the growth in international air traffic over the past decade:

Year Passenger Volume (Millions)
2010 1,886
2011 2,069
2012 2,204
2013 2,406
2014 2,602
2015 2,764
2016 3,087
2017 3,527
2018 3,979
2019 4,543
2020 1,805

Table: Average Runway Lengths of Major Airports (in meters)

An essential consideration while discussing the impact of a clearway is the length of runways at major airports worldwide. This table illustrates the average runway lengths observed at some of the busiest airports:

Airport Runway Length
Hartsfield-Jackson Atlanta International Airport (ATL) 2,896
Beijing Capital International Airport (PEK) 3,810
London Heathrow Airport (LHR) 3,902
Tokyo Haneda Airport (HND) 3,600
Dubai International Airport (DXB) 4,000

Table: Percentage of Airports Incorporating Clearways

Understanding the prevalence of clearways is crucial to assess runway safety worldwide. The following table presents the percentage of airports that incorporate clearways across different regions:

Region Percentage of Airports with Clearways
North America 87%
Europe 92%
Asia-Pacific 78%
Middle East 68%
Africa 53%
Latin America 71%

Table: Runway Incursions Reported in 2021

Runway incursions pose significant risks to aircraft safety. The table below presents the number of runway incursion incidents reported in the first half of 2021:

Region Number of Incidents
North America 129
Europe 87
Asia-Pacific 102
Middle East 56
Africa 34
Latin America 76

Table: Maximum Lateral Displacement Distance During a Standard Takeoff (in meters)

Without a clearway, an aircraft’s ability to laterally maneuver during takeoff may be compromised. The following table showcases the maximum lateral displacement distances during standard takeoff procedures for various aircraft:

Aircraft Type Displacement Distance
Boeing 737 5
Airbus A320 4.5
Embraer E190 4
Bombardier CRJ900 4
Cessna 172 3

Table: Landing Distance Required (in meters) for Selected Aircraft

The availability of a clearway also impacts an aircraft’s landing requirements. The table below shows the landing distance required for different aircraft:

Aircraft Type Landing Distance Required
Boeing 747 2,500
Airbus A380 3,000
Embraer E175 1,800
Bombardier Q400 1,900
Cessna Citation X 1,600

Table: Runway Excursion Fatalities by Continent (2015-2020)

The consequences of runway excursions can be devastating. The following table displays the number of fatalities caused by runway excursions categorized by continent from 2015 to 2020:

Continent Number of Fatalities
North America 39
Europe 68
Asia 53
Africa 12
Australia 6
South America 24

Table: Top 5 Airports with the Most Overrun Accidents

Overruns occur when an aircraft exceeds the runway’s end during landing or takeoff. The following table highlights the top 5 airports worldwide that have witnessed the most overrun accidents:

Airport Number of Overrun Incidents
Tokyo Narita International Airport (NRT) 9
Moscow Domodedovo Airport (DME) 7
São Paulo-Congonhas Airport (CGH) 6
New York LaGuardia Airport (LGA) 5
Paris Charles de Gaulle Airport (CDG) 5


As the data presented in the tables suggests, the presence of clearways in conjunction with adequate runway lengths plays a vital role in maintaining aviation safety and efficiency. Runway incursions, lateral displacement distances, landing requirements, and runway excursion fatalities all highlight the significance of clearways in mitigating risks. Furthermore, the number of overrun accidents underscores the need for clearway implementation at airports worldwide. Recognizing the importance of clearways is a crucial step towards ensuring safer and smoother operations within the aviation industry.

Frequently Asked Questions

Runway Without Clearway


What is a runway without clearway?

A runway without clearway refers to a runway that lacks the additional paved area beyond the
runway’s end, known as the clearway. The clearway provides an additional margin of safety for aircraft during
takeoff and landing procedures.

Why do some runways not have clearways?

Certain runways may not have clearways due to various factors, such as limited available
space, geographic constraints, or surrounding environment. Designers and planners have to work within these
constraints to ensure runway safety without compromising on other critical aspects.

What are the requirements for a runway to have a clearway?

The specific requirements for a runway to have a clearway vary depending on regulatory
authorities and aircraft types being operated. Generally, the presence of a clearway requires appropriate
distances beyond the runway ends, obstacle-free zones, and considerations regarding aircraft performance and

Are runways without clearways safe?

Runways without clearways can still be safe if they are designed and operated within
regulated standards. Safety measures such as runway end safety areas (RESAs) and carefully managed runway
environments help mitigate the lack of clearways by providing buffers and improved runway conditions.

What is the difference between clearway and stopway?

While both clearway and stopway are additional areas beyond the runway’s end, there is a
key difference between them. A clearway is designed to be free of permanent obstacles, extending the available
space for aircraft during takeoff and landing. On the other hand, a stopway is an area designed to safely stop
an aircraft that has overshot or undershot the runway.

Can aircraft safely operate on runways without clearways?

Yes, aircraft can safely operate on runways without clearways as long as the runway meets
all required safety standards. Pilots are trained to operate within the given runway dimensions, and airports
follow stringent procedures to ensure the overall safety of operations for the aircraft and passengers.

What challenges do pilots face on runways without clearways?

Pilots operating on runways without clearways may face challenges related to aircraft
performance during takeoff and landing. The absence of clearways restricts the available distance aircraft can
use for accelerating or decelerating, potentially affecting takeoff weights, required runway lengths, and overall
aircraft performance.

How are aircraft speeds adjusted on runways without clearways?

Aircraft speeds are adjusted based on runway length, aircraft performance, and regulatory
requirements. Pilots calculate the necessary takeoff and landing speeds taking into account factors such as
runway condition, ambient weather conditions, aircraft weight, and available distances for acceleration and
deceleration within the given runway length.

Do runways without clearways have any special safety considerations?

Runways without clearways may have specific safety considerations, such as the presence of
enhanced runway end safety areas (RESAs) or arresting systems. These additional safety features aim to provide
alternative means of ensuring aircraft safety in case of underruns or overshoots.

Are there any restrictions on the types of aircraft that can use runways without clearways?

Restrictions on aircraft types using runways without clearways depend on multiple factors,
including runway dimensions, aircraft performance characteristics, regulatory requirements, and operational
procedures. Each airport and runway may have specific limitations and guidelines to ensure safe operations.