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National Airspace System Metrics

The modernization of our nation's complex air transportation system continues to produce measurable benefits across the country. The effects of NextGen technology and procedures in place throughout the National Airspace System can be observed in terms of more efficient fuel usage by airlines, reduced aircraft emissions, and increased access to airports by the general aviation community.

All results are reported by Fiscal Year (FY), October 1–September 30, or Calendar Year (CY).

NextGen Implementation Plan (PDF)

Environment and Energy
Describes enabling activities leading to the establishment and implementation of the NextGen Environmental Management System, the strategy for ensuring compliance with the National Environmental Policy Act and technologies that support NextGen environmental goals.
Infographic with NextGen NAS stats displayed

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Fuel burn can be a function not only of aircraft size and flight stage length, which varies with the actual mix of flights across city pairs, but also of the weather, congestion and other operating conditions, which may vary from year to year and from one city pair to another. This metric is not a direct measure of operational fuel efficiency and should not be used as a proxy for system fuel efficiency.

The metrics are calculated based on data provided by select airlines for the 104 NAC recommended city pairs. The data does not include all operations for the select city pairs. See the Fuel Burn Reporting Carriers and Fuel Burn City Pairs sections of the NPS Reference Guide for additional information.

FuelBurn performance indicators
Performance Indicator
Fiscal Year
2013 2014
Average Fuel Burn
Pounds

Fuel Burn is defined as the actual fuel used between gate departure and gate arrival. This metric is reported as an aggregated per flight average for all key city pairs over the course of a Fiscal Year (October-September). Average fuel used per flight is influenced by the mix flying across city pairs, aircraft size, traffic carried, aircraft performance characteristics and weather. Accordingly, as reported, this metric is not a direct measure of operational fuel efficiency and should not be used as a proxy for system fuel efficiency.

10,499 10,594
Average Gate Weight
Pounds

Actual aircraft gate pushback weight, averaged across the flights reported in the Fuel Burn metric.

137,819 138,616
Average Great Circle Distance
Nautical Miles

The shortest distance between any two points on the surface of a sphere measured along a path on the surface of the sphere. While the great circle distance between an airport pair remains consistent over time, changes in the frequency of specific airport pairs in the data set may affect this measure.

580 590
Departure Mix by Fleet Type
Percent
Breakdown of the types of aircraft included in the Average Fuel Burn metric data sample based on the categorizations in FAA Order JO 7340.2E.
Heavy 2.2 2.1
Large 79.4 79.1
Medium 18.4 18.8

High Low

Environment performance indicators
Performance Indicator (CY) 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
CO2 Emissions
Kilograms

Estimated quantity of carbon dioxide emissions (CO2) emitted by commercial aircraft within the NAS.

1.88×1011 2.30×1011 2.34×1011 2.13×1011 2.01×1011 1.71×1011 1.76×1011 1.73×1011 1.77×1011 1.82×1011 1.88×1011 1.92×1011
NAS-Wide Energy Efficiency
Kilograms per Tonne-Kilometer

Estimated fuel burn in kilograms per revenue tonne kilometer.

0.359 0.351 0.348 0.341 0.342 0.329 0.327 0.331 0.328 0.320 0.318 0.323
Noise Exposure
Number of People

Number of persons exposed to significant aircraft noise (regardless of whether their houses or apartments have been sound-insulated). Significant aircraft noise levels are currently defined as values greater than or equal to Day-Night Average Sound Level (DNL) 65 decibels (dB).

498,000 480,000 466,000 383,000 292,000 318,000 315,000 319,000 321,000 340,000 343,000 408,000

High Low

As described by the International Civil Aviation Organization (ICAO): The Air Traffic Management (ATM) system should contribute to the protection of the environment by considering noise, gaseous emissions, and other environmental issues in the implementation and operation of the global ATM system.

Access performance indicators
Performance Indicator (FY) 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
LPV & LP Access at GA Airports without ILS
Count of Airports

Localizer Performance with Vertical guidance (LPV) & Localizer Performance (LP) data gathered from the FAA Global Navigation Satellite Systems Group.

Airport information gathered from the 2017-2021 National Plan of Integrated Airport Systems (NPIAS) Report and Airport Master Record Form 5010 data.

The count of national, regional, local and basic General Aviation (GA) airports (as defined in the 2017-2021 National Plan of Integrated Airport Systems Report) without an Instrument Landing System (ILS) that have an LPV or LP procedure in the indicated year.

0 2 18 71 139 248 331 474 603 753 890 954 1,008 1,071 1,130
Percent of Qualified GA Airports with LPV or LP Access
Cumulative Percent

Localizer Performance with Vertical guidance (LPV) & Localizer Performance (LP) data gathered from the FAA Global Navigation Satellite Systems Group.

Airport information is gathered from the 2017-2021 National Plan of Integrated Airport Systems (NPIAS) Report and Airport Master Record Form 5010 data.

The cumulative percent of qualified national, regional, local and basic General Aviation (GA) airports (as defined in the 2017-2021 NPIAS Report) with an LPV or LP procedure.

0.5 1.0 3.7 8.8 13.8 20.9 28.1 36.5 43.9 51.9 58.4 61.4 63.9 66.9 69.8

High Low

As described by the International Civil Aviation Organization (ICAO): A global Air Traffic Management (ATM) system should provide an operating environment that ensures all airspace users have right of access to the ATM resources needed to meet their specific operational requirements and that the shared use of airspace by different users can be achieved safely.

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This page was originally published at: https://www.faa.gov/nextgen/snapshots/nas/