2003 FRP User Conferences 1 FAA’s Transition Strategy for Navigation and Landing Services Dave Olsen Navigation System Engineer Architecture and Systems Engineering 2003 FRP User Conference

2003 FRP User Conferences 2 Radionavigation Task 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 Conferences 3 Transition Strategy Objectives Consider current and future navigation services defined in the 2001 FRP Consider state of the aviation industry since September 11 th 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 Conferences 4 Transition Strategy Participants 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 Conferences 5 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 Conferences 6 Satellite Navigation Services 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 Conferences 7 Projected Navaid Services Transition Minimum Operating Network VOR 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 backup ILS–CAT I and Localizer-Only NDB Long-Range Systems – Alaska and Coastal

2003 FRP User Conferences > VOR/VORTAC/VOR-DME 5,000’ AGL (75nmi radius) Current VOR Coverage

2003 FRP User Conferences 9 Projected MON VOR Coverage 471 VOR/VORTAC/VOR-DME 5,000’ AGL (75nmi radius) > 3

2003 FRP User Conferences 10 GPS Backup Equipage Operations Disruption Threat Mitigation GPS Interference Event Procedures Only VOR Minimum Operating Network Long-Range NDB’s ILS DME-DME INS FMS ILS Operational Contingency Backup Capability Redundant Capability

2003 FRP User Conferences 11 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 Conferences 12 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…