Contents
What does a glide slope do?
A glide slope provides vertical (up/down) guidance toward the runway touchdown point, usually at a 3° slope. Marker beacons provide range information along the approach path. Approach lights assist in the transition from instrument to visual flight.
What is the usable range of the glide slope?
10 NM
The glide slope is normally usable to the distance of 10 NM. However, at some locations, the glide slope has been certified for an extended service volume which exceeds 10 NM. Pilots must be alert when approaching the glidepath interception.
How is glide slope calculated?
Your glider traveled 50 feet before landing on the floor. Horizontal Distance = 50 feet Change in Altitude = 10 feet Dividing Distance (50) by Altitude (10) = 5 The Glide Ratio is 5 50/10 = 5/1 = 5 The glider flew forward 5 feet for every 1-foot drop in altitude.
How many miles out does the glide slope guarantee obstacle clearance?
These lights are visible from 3-5 miles during the day and up to 20 miles or more at night. The visual glide path of the VASI provides safe obstruction clearance within plus or minus 10 degrees of the extended runway centerline and to 4 NM from the runway threshold.
How are the frequency pairings for localizer and glide path?
The localizer / glide path pairing table is part of Annex 10 of the Convention, Volume I, paragraph 3.1.6. 3.1.6.1 The pairing of the runway localizer and glide path transmitter frequencies of an instrument landing system shall be taken from the following list in accordance with the provisions of Volume V, Chapter 4, 4.2.
How is the ILS glide slope DDM to dots?
There is a generic convention that 0.175 DDM is 2 dots. This is why one dot is 0.0875 DDM and this value is the range for boundary used in ILS.
What’s the minimum glide path separation for ILS?
If selection of ILS channels is confined to either the first ten or the second ten pairings, then the minimum glide path frequency separation will be 600 kHz. Thanks for contributing an answer to Aviation Stack Exchange! Please be sure to answer the question.
What are the SSV range boundaries and altitudes?
SSV Designator Altitude and Range Boundaries VL (VOR Low) From 1,000 feet ATH up to but not includ VH (VOR High) From 1,000 feet ATH up to but not includ DL (DME Low) For altitudes up to 12,900 feet ATH at a DH (DME High) For altitudes up to 12,900 feet ATH at a