F E D E R A L A V I A T I O N A D M I N I S T R A T I O N • A I R T R A F F I C O R G A N I Z A T I O N 1

Wide Area Augmentation System(WAAS)Dan Hanlon

WAAS Program Manager

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WAAS Commissioned! For IFR Aviation Use – July 10, 2003

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WAAS Capabilities

FAA Makes WAAS Available For Non IFR Aviation Use In August 2000– Signal Available At Surface For All Users

Initial Operating Capability (IOC)– FAA Commissions System For IFR Use On July 10, 2003– 100% Coverage CONUS & Alaska From 100,000 Ft. To

Surface– Horizontal Accuracy 1.5M– Vertical Accuracy 3M– Better Than 99.99% Availability Of System– 95% Availability In CONUS Of Precision Approach

• 350’ Minimum– WAAS Specific Approaches (LPV) Published

• Sep 2003 - 250’ Minimums

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WAAS Components

F E D E R A L A V I A T I O N A D M I N I S T R A T I O N • A I R T R A F F I C O R G A N I Z A T I O N 5

Development Activities

Full Operating Capability (FOC) Development Underway System Enhancements:

– More Efficient Monitor Algorithms– 13 Additional WRSs To Improve Availability And Coverage

• 4 Alaska• 5 Mexico• 4 Canada

– Provide Two GEO Satellites In View To All Users– Enhancing The Terrestrial Communications– Enhanced O&M Efficiency– Equipment Upgrade Using COTS When Feasible

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WAAS Schedule IOC (Initial Operating Capability) Incremental Improvements

– Ground System Development Ends– System Improvements Will Be Brought

Online Incrementally– End State Performance Will Result In

Greater Availability Of Precision Approach (LPV - 250 Foot Minimums)

• 99% CONUS• 95% In Most of Alaska

Dual GEO Coverage Over All CONUS and Alaska

GPS Modernization– L5 Frequency (Block IIF & GPS III)– WAAS 200’ Minimums– Better Interference Mitigation

20032003 - 2008

2007

2013

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WAAS CapabilitiesFor Aviation

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NAS Benefits

Aids in Transition to More Advanced Navigation Capability– WAAS Supports RNP– Provides Very High Quality Navigation Signal for Lower

RNP Values (Better than .11) Improves National Airspace System Efficiency and

Capacity– Complex Procedures Available to All Aircraft– Advanced Arrival and Departure Procedures– Promotes Airspace Redesign– Guidance Through Position Velocity Time (PVT)/FMS

RNAV Cost Savings By Decommissioning of Redundant Ground

Based Navigation Aids

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General Aviation Benefits Safety

– Provides Vertical Guidance At All Runway Ends

– Improves Situational Awareness Improved Access for General Aviation to

All Airports and Improved Navigational Capabilities

Low Cost/High Capability Avionics– Provides State of the Art Performance at

a Modest Cost Minimum Enroute Altitude (MEA) at or

Near Minimum Obstruction Clearance Altitude (MOCA)– More Airspace Available in Enroute

Environment– Departure and Arrival Procedures

Can Be Developed Based on Efficiency Not Placement of Ground Based NAVAIDS

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Vertical Flight Benefits Enables Simultaneous Non-Interfering ( SNI) Operations

– Provides Separate Flight Paths And Landing Areas For Rotorcraft And Fixed Wing Aircraft

– Eliminating Competition For Limited Approach And Landing Resources

Precision Guided Approach Capability In Areas With No Navigation Aids– Air Ambulance– Urban Canyons

Positive Navigation Capability At All Operating Altitudes Air Route Width

Reduction– Reduced Edge Of

Adjacent Airspace Separation

– Reduced IFR Separation Between Aircraft

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Significant Increase in Number of Available Airports with Precision Approach Capabilities

Backup Approach Capability for Airports with Out of Service ILS

Minimum Enroute Altitude (MEA) at or Near Minimum Obstruction Clearance Altitude (MOCA)

Business & Regional Aviation Benefits

– More Airspace Available in Enroute Environment

– Departure and Arrival Procedures Can Be Developed Based on Efficiency Not Placement of Ground Based NAVAIDS

High Capability Avionics for Relatively Low Cost– Provides Many of the Same Capabilities as High End Air Carrier Aircraft

Allows Easier Access to Lower RNP Low RNP (Better Than .11) Provides Flexibility in Development of New Routes and Procedures

LNAV/VNAV 350’

LPV 250’ILS 200’

3o

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Airport Benefits

Precision Approach Capability At All Runway Ends

When Combined with ADS/B, Provides Separation at Airports Without Radar Coverage

Surface Navigation– Very Accurate Moving Map Availability Provides Pilot

Situational Awareness Enhanced Noise Abatement By Use of

Advanced Procedures

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WAAS Avionics Certified Receivers

– UPS/AT– Chelton Systems– Free Flight Systems

Capstone (Alaska)– Major Program Goal To Improve Safety and

Efficiency By Installing WAAS Avionics– SFAR Approved (Mar 03)– Continue to Equip Aircraft with WAAS Avionics

Capstone Installation

Chelton Receiver

UPS/AT Receiver

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How to Fly a WAAS Approach

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Toggle to Activate Receiver

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Destination Airport:Frederick, MD (KFDK)

Build Flight Plan

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Specify Approach

Destination Airport: Frederick, MD (KFDK)

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Execute to Activate Approach

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Vector to Final (VTF)

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On Course/On GlidepathWith WAAS

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Arrival

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Summary

WAAS Benefits All Classes Of Aviation Users WAAS Has Been Available VFR For Almost 4 Years WAAS Commissioned For IFR Use On July 3, 2003 Signal Enhances Navigation In All Phases Of Flight WAAS Enables All Users to Participate In RNP Signal Is Usable From Surface To 100,000 Feet Provides Vertical Guidance To All Runway Ends* Aviation Receivers Available Today WAAS Is Being Improved Incrementally To Bring Added

Capability Online As Soon As It Is Ready Demonstrates FAA Commitment To Improving Services For All

Aviation Users

* Requires Instrument Flight Procedure To Be Developed For Each Runway End