Questions tagged [ils]
An instrument landing system (ILS) is a ground-based instrument approach system that provides precision guidance to an aircraft approaching and landing on a runway.
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Current status of GNSS navigation
For a long time, aircraft navigation (other than under VFR) used a number of ground-based radio beacons (VOR/DME, NDB...), IRUs, etc.
More recently, there has been a push towards using GNSS (GPS, ...
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What is the meaning of “DL” on FRANKFURT ILS Chart
I have a question about the Frankfurt RWY 25L ILS chart. On the bottom left, there is a note saying “DL: DA(H) 588’ (227’)”.
I could not find any explanation of the abbreviation DL in the Jeppesen ...
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How to Know ILS Glide Slope Extended Service Volume?
AIM 1-1-9 defines ILS standard service volume (SSV) out to 18 NM for a localizer and 10 NM for a glide slope. All localizer charted procedures are certified beyond 18 NM, in an extended service volume ...
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Can I land in ILS CAT I when no RVR info is available and VIS is 700m? According to easa
Category I (CAT I): a DH not lower than 60 m (200 ft) and with either a visibility not less than 800 m or a RVR not less than 550 m
I was wondering if it is legal to convert VIS to RVR and land when ...
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ILS Designated Operational Coverage (DOC)
During a standard Instrument Landing System (ILS) approach, I typically arm the VOR/LOC (Boeing 737) to capture the localiser1 once on an intercept course. Upon clearance for the approach, I then arm ...
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Would I hear the 90Hz and 150Hz signals when tuned to ILS frequencies with a basic handheld radio?
If I were to make a basic handheld radio and set it to listen to any ILS, would I hear the frequencies which tell you whether you're left or right of the center line?
On similar note, how come pilots ...
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What is, precisely, the function of far field monitor in ILS?
For what I have understood, far-field monitor (FFM) is composed by a set of antennas that receive the signal from the localizer, and check its integrity. The checking is made by extracting the DDM ...
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What is this crossbow-shaped flight path? [duplicate]
While headed to lunch yesterday I spotted a small aircraft flying low overhead. I didn't think too much of it until a few minutes later the exact same plane flew over again in the exact same spot! I ...
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ILS Frequency Assignment In Dual Nav Radio Setup
With a dual Nav radio setup (On autopilot panel) does the ILS frequency of the runway you're about touch down on need to be entered into both radios or just one? Cheers.
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Localizer beam protection
During mixed operation, will an aircraft crossing the end of the runway affect the localizer transmission?
(Istanbul airport, source.)
For instance, when runway 17L is in use, will an aircraft ...
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Question about ILS approach categories
I was reading about FAAs ILS approach categories minimums and have a question!
Category II. DH 100 feet and RVR 1,200 feet (with autoland or HUD to touchdown and noted on authorization, RVR 1,000 feet)...
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Obstacle clearance altitude and decision height
can someone explain does OCA that is written in charts coresponds to DA for airlines (its the same altitude), or does airlines choose different DA for example CAT I approach ?
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MOC for CAT III missed approach segment
Hello what is the MOC (minimum obstacle clearance) for missed approach segment for CAT III ILS minimum ?
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How do you capture the localizer in an A320?
I understand that pushing 'Approach' should do it (when in range), but it doesn't. There must be another step that I'm missing (the computer has been set up so it's not that).
What is the step-by-step ...
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How do you know what altitude to be at for "APPR" mode to work?
How would you know what altitude to be at to capture the glideslope on an autopilot RNAV or ILS approach? (I am mainly focused on MSFS airliners, but this could apply to other planes or in real life)
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