2014年3月25日 · The ILS works using two components, a localizer and a glideslope. The frequencies for the localizer are between 108.1-111.95 MHz and the glide slope between 329.15-335.0 MHz. These frequencies are the carrier waves that …

2019年9月26日 · All VOR, VORTAC, and ILS equipment in the NAS have automatic monitoring and shutdown features in the event of malfunction. Unmonitored, as used in this order, means that the personnel responsible for monitoring the facility have lost aural and visual monitoring capabilities and cannot observe the status of the facility.

2020年9月8日 · Here is an example chart for KLAX ILS 25R approach. In the top right, it says the runway, the airport, and the approach type (ILS or LOC). In the top left, it says the ILS frequency, and just to the right, the runway heading. On the very bottom, there's a diagram of the glidepath. It lists the FAF, which is a "X" symbol with wide edges.

2020年6月6日 · Consider e.g. KTUP, which has an ILS-Y and ILS-Z approach to runway 36. Here is the chart for the ILS-Y: This ILS approach starts at an RNAV waypoint GAGYE and therefore lists "RNAV 1-GSP required" as a requirement. The ILS-Z approach looks completely different: This ILS approach has two IAFs: CEVSI on the OTB 12-DME arc and the VERON NDB. It ...

2016年2月26日 · The ILS glide slope is intended to be intercepted at the published glide slope intercept altitude. This point marks the PFAF and is depicted by the “lightning bolt” symbol on U.S. Government charts.

2020年7月11日 · The ILS localizer is more sensitive than a VOR radial, therefore providing more accurate lateral guidance. The ILS has a glide slope providing vertical guidance. A VOR approach does not have any vertical guidance (although with a VOR/DME one can at least determine the exact point at which to start a CDFA (continuous descent final approach) and ...

2016年10月11日 · This is the standard ILS procedure minimum for a runway so equipped. This is also the absolute lowest minimum available for a single pilot operation -- single pilot operators are ineligible to use CAT II/III or SA CAT I/II ILS approaches. 150' DH with 1600 or 1400 RVR -- SA CAT I ILS with MALSR or ALSF/2 + TDZ/CL and the use of HUD guidance to DH.

ILS is can be very precise, but there are many factors that may compromise the precision. When all these factors are avoided, automatic landing with no visibility is reliably possible. The ILS installations are classified in three categories: CAT I: Category 1 allows for decision height (DH) no less than 200 ft (height, so above ground level).

2017年3月12日 · Once you are established on ILS, it will direct you to the center of the desired glide path. If you are above the center, ILS will direct you down and if you are below it, ILS will guide you up, but only to a certain extend. If you are way too high or way too low, the ILS direction will flip and show you the opposite of what you need to know.

2018年10月30日 · One thought is to prevent shut down of the ILS caused by reflections. In doppler radar this effect is called a hole, and happens at unique slope elevations depending on the specific frequency. Phase cancellation happens when the reflected energy is exactly 180 degrees out of phase, similar to the functioning of noise cancellation headphones.