2003 FRP User Conferences1

FAA’s Transition Strategy for Navigation and Landing Services

Dave OlsenNavigation System Engineer

Architecture and Systems Engineering

2003 FRP User Conference

2003 FRP User Conferences2

RadionavigationTask Force

• Volpe Vulnerability Assessment of the Transportation Infrastructure Relying on the Global Positioning System– Published in August 2001– DOT Task Force formed to address mitigation

measures

• FAA tasked to develop Navigation and Landing Transition Strategy - submitted to DOT in August 2002 (faa.gov/asd - Library)

2003 FRP User Conferences3

Transition Strategy Objectives

• Consider current and future navigation services defined in the 2001 FRP

• Consider state of the aviation industry since September 11th

• Create service-based approach to Navaid reductions– Optimize rather than minimize services– Emphasis on operational readiness, dispatch

capability and the servicing of demand

• Continue to recognize differing aircraft equipage (GA and Air Carrier)

2003 FRP User Conferences4

Transition StrategyParticipants

• FAA– NAS Architecture (ASD)– Regulation and Certification (AFS & AIR)– Air Traffic Services (AT & AF)

• Focused briefings were presented to:– Industry groups and trade associations– DOT (Pos/Nav Executive Committee)– DoD (Policy Board on Federal Aviation)

2003 FRP User Conferences5

Stakeholder Comments

• Industry– Airlines and GA– MITRE/CAASD analysis and support

» Analyzed proposed minimum operating network (MON)

» Sponsored Industry Day – May 7, 2002

• Comments considered in the Transition Strategy

2003 FRP User Conferences6

Satellite NavigationServices

GPS and Augmentations• Global Positioning System (GPS)• Augmented for Accuracy, Availability,

Continuity, Coverage, and Integrity– Wide Area Augmentation System (WAAS)– Local Area Augmentation System (LAAS)

• WAAS procedures with vertical guidance begin in 2003– LNAV/VNAV– LPV

2003 FRP User Conferences7

Projected Navaid Services Transition

02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19

Minimum Operating NetworkVOR

ILS – CAT II/III Retained on current runways

WAAS

TACAN

DME

LAAS CAT I

LAAS CAT II/III

6 airports + options for 0 to 40 per year

R&D Required

Retain on at least one runway where required for backupILS – CAT I and Localizer-Only

NDB Long-Range Systems – Alaska and Coastal

2003 FRP User Conferences8

0

1

2

> 31005 VOR/VORTAC/VOR-DME

5,000’ AGL (75nmi radius)

Current VOR Coverage

2003 FRP User Conferences9

Projected MONVOR Coverage

471 VOR/VORTAC/VOR-DME5,000’ AGL (75nmi radius)

0

1

2

> 3

2003 FRP User Conferences10

GPS Backup Equipage

Operations Disruption

Threat Mitigation

GPS Interference Event

ProceduresOnly

VORMinimum Operating Network

Long-Range NDB’sILS

DME-DMEINSFMSILS

OperationalContingency

BackupCapability

RedundantCapability

2003 FRP User Conferences11

Architecture & Loran-C

• Ongoing research– FAA & Coast Guard

• Will Loran support:– Aviation nonprecision approach?– Maritime harbor entrance and

approach operations?– Time and frequency users?

2003 FRP User Conferences12

Summary

• FAA Has Proposed a Transition Strategy that considers:– GPS vulnerability– Backup requirements

• Strategy is being incorporated into the 2003 Federal Radionavigation Plan

• Opportunity for continued discussions with aviation community

The more we keep,

the greater the cost…