Government/Industry Aeronautical Charting Forum (ACF) Meeting ~ May 1 - 2, 2002 New Charting Topic WAAS LPV Charting Requirements Hank Cabler, AFS-400
Performance Comparison LNAV/VNAV (556 m by 50 m) LPV (40 m by 50 m) GLS (40 m by 12 m)
Proposed Lateral Obstacle Clearance Criteria (comparison to LNAV and LNAV/VNAV)
Proposed Criteria WAAS NSE Does Not Degrade with Distance from Threshold. At 668’ HAT, WAAS and ILS NSE are Equivalent. Above 668’ HAT, LPV Uses ILS OCS. Validate Use of ILS Criteria Adjusted for 50 M Vertical Alert Limit
LPV Estimated Minima Average:272 ft Median:250 ft % < 258ft:81% 5073 runway ends at 1534 airports APV 1.0
Estimated HAT for Vertically Guided Approaches--Summary 5073 runway ends at 1534 airports