Which ILS marker do you cross when you intercept the glide slope?

Which ILS marker do you cross when you intercept the glide slope?

Outer Marker: Identifies glideslope intercept or the Final Approach Fix (light flashes blue) Middle Marker: Identifies decision height (light flashes amber) Inner Marker: Identifies decision height for a CAT II ILS (light flashes white – we’ll talk about what CAT II means below)

What is a localiser approach?

Introduction. A localizer approach is a non-precision approach that provides a pilot with azimuth (lateral) guidance to the landing runway. A localizer approach can be a stand-alone localizer or it can be associated with an ILS Approach.

When can you descend on an ILS approach?

If you can see the white approach light system and nothing else, you can descend down to 100′ above touchdown zone elevation, regardless of the type of approach you’re flying (even if it’s a non-precision approach). But at the 100′ point, you need other visual references to descend lower.

What is final approach fix?

FINAL APPROACH FIX (FAF) — A specified point on a non-precision instrument approach which identifies the commencement of the final segment. FINAL APPROACH POINT (FAP) — A specified point on the glide path of a precision instrument approach which identifies the commencement of the final segment.

What is the final approach fix on an ILS approach?

For precision approaches, the final approach fix is defined as the glide slope intercept at the published altitude. (An ILS is a precision approach while a LOCALIZER approach is non-precision. Thus, both the bolt and the cross exist on the same approach chart.)

Where is the final approach fix on an ILS?

glide slope intercept
For precision approaches, the final approach fix is defined as the glide slope intercept at the published altitude. This is identified in the chart’s profile view by the lightning bolt. For non-precision approaches, the final approach fix is identified by the Maltese cross.

What is the frequency used by the glide slope transmitter?

328.6-335.4 MHz
The FAA and military operate ILS Glideslope systems in the band 328.6-335.4 MHz to provide aeronautical radionavigation to military, commercial, and general aviation private aircraft in the National Air Space (NAS).

How does glide slope work?

A glide slope station uses an antenna array sited to one side of the runway touchdown zone. The GS signal is transmitted on a carrier signal using a technique similar to that for the localizer. The centre of the glide slope signal is arranged to define a glide path of approximately 3° above horizontal (ground level).

Does ForeFlight have a glideslope?

When you tap one of the runways, ForeFlight will move you out to 1nm and on the published glideslope (often 3 degrees), or 6 degrees if there is no published glidelsope. A small windsock icon on the panning control shows the current wind direction, so you can choose the best runway for takeoff or landing.

What is interintercepting glide slope?

Intercepting the glide slope at this altitude marks the beginning of the final approach segment and ensures required obstacle clearance during descent from the glide slope intercept altitude to the lowest published decision altitude for the approach. The Aeronautical Chart User’s Guide also explains:

When does the final approach segment begin at glideslope intercept altitude?

If ATC authorizes a lower intercept altitude, the final approach segment begins upon glideslope/glidepath interception at that altitude. Does this paragraph imply that the FAF (FAP) for a precision approach fix (point) begins at the minimum glideslope intercept altitude when you have intercepted the glideslope at an altitude above that?

What happens if the glide slope is intercepted between Jakor and silky?

For the example plate above, this would mean that if the glide slope were intercepted between SILKY and JAKOR the pilot would be considered to be past the final approach fix for all intents and purposes and might even configure the airplane for landing at that point rather than passing JAKOR at the published glide slope intercept.

What is the final approach fix?

So basically, the Final Approach Fix is when you intercept the glideslope at the lightning bolt or after the lightning bolt. Outer marker beacons are usually (but not always) co-located with the conjunction of intercept altitude and glideslope. If there are no marker beacons, you can expect to see an annotation stating RADAR REQUIRED.