StART Glideslope Presentation Feb 27 2019

– Glideslope (GS) – provides vertical information • Primary Siting Standards: 3° glideslope angle & Maximum 60’ Threshold Crossing Height • Existing 34R ILS has 2.75° glideslope with 60’ threshold crossing height ILS Glideslope GS is currently at maximum threshold crossing height R 60’ Threshold Crossing Height Glideslope Antenna Existing 34R ILS Approach ILS Glideslope Relocation of GS Antenna needed to increase GS angel R 60’ Max Threshold Crossing Height Relocated Glideslope Antenna Relocated 34R Glideslope Antenna Antenna shifts towards runway end • RNAV approaches are satellite based and do not relay on a navigational aids located at each runway end – Two RNAV procedures are currently published for Runway 34R (1) Required Navigational Performance (RNP) and (2) Global Positioning System (GPS) – Both RNAV procedures have glidepaths of 2.75° and 60’ threshold crossing heights Area Navigation (RNAV) 34R RNAV Approaches set to 2.75° GS Precision Approach Path Indicator (PAPI) 34R PAPI Set to 2.75° GS • Precision Approach Path Indicator is a lighting system that provides the pilot with glidepath information – 34R PAPI is set to 2.75° – Relocation of system needed to achieve 3° High Slightly High On Glidepath Slightly Low Low 34R Glideslope Adjustment Alt. 1 Alternative 1 1. Relocate glideslope antenna and PAPI to permanent location a) Relocate as part of a future project that impacts the glideslope (34R GS equipment moves to west side of runway) b) Adjust RNAV procedures after equipment is relocated 2. Relocate glideslope antenna and PAPI a) Temporarily Relocate glideslope…

Open full document

Upcoming Events

PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]