| Term A VHF Omni-Directional Range (VOR) has how many usable magnetic radials? | Definition 360 |
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| Term The component of the ILS which gives lateral course guidance to the runway is the ________. | Definition localizer |
The lowest authorized ILS minimums, with all required ground and airborne systems components operative, are: Runway Visual Range (RVR): 2,400' (1,800 w/ Touch Down Zone (TDZ) and centerline lighting) or (with Autopilot or Flight Director (FD) or Heads Up Display (HUD), RVR 1,800')
The Instrument Landing System (ILS) provides an approach path for exact alignment and descent of an aircraft on final approach to a runway. The ground equipment consists of two highly directional transmitting systems and, along the approach, three (or fewer) marker beacons.
Instrument Landing System Procedure: 1 Request the ILS approach from ATC 2 Follow the assigned clearance or radar vectors, as assigned by ATC 3 Complete any appropriate checklists, ensuring the aircraft is in the landing configuration before intercepting the glide-slope Weitere Artikel...
Issued when official weather observation is a ceiling of less than 800 feet and/or visibility 2 miles Requires the pilot to keep the entire aircraft clear of the associated marking and remain on the safe side of the ILS Critical Area
The ILS is one of the few instrument approaches that can get aircraft to the runway in near-zero visibility and ceilings. No wonder it's been used for nearly 100 years.
To fly an ILS, you first align your aircraft with the runway, using the localizer as guidance. This is typically done by radar vectors from ATC, or with a procedure turn. You then fly toward the runway and intercept the glideslope from underneath, so you don't intercept a false glideslope.
There are several different ways that the localizer and glideslope can be represented on flight instruments, but in most glass-panel aircraft, they're represented as a green line or triangle for the localizer, and a green diamond or triangle for the glideslope.
Localizers have an adjusted course width so that they're 700 feet wide at the runway threshold (full scale fly-left to a full scale fly-right).
Approach light systems (ALS) support the ILS to enhance low-visibility minimums. They're designed to help pilots transition from instrument flying to visual flying, and also to aid with identifying the runway's centerline. Increasing intensity of ALS capabilities can noticeably reduce visibility minimums, allowing for aircraft to arrive at the airport during poor conditions.
Each beacon designates a specific position on the approach, with an audible tone and/or visual light that illuminates in the cockpit.
Glideslope (Vertical Guidance) Glideslope equipment is usually located 750 to 1250 feet down the runway, and 400 to 600 feet from the side of a runway's centerline. You can usually find the glideslope shed next to the runway's aim point markers. The glideslope works the same as a localizer, but just turned on its side.