Do not enter areas beyond a no-entry sign unless you have specific permission. Ignoring a no-entry sign can lead to unsafe situations or violations of airport regulations, which may result in penalties or suspension of your pilot’s license. You’ll find no entry signs at the entrance of restricted areas, such as one-way taxiways, closed taxiways, or other areas where aircraft are not allowed to enter. By staying aware of ILS critical area holding position signs and their purpose, you’ll contribute to the safe and efficient operation of the airport. Remember that entering the ILS critical area without proper clearance may cause signal interference, potentially affecting the safety of aircraft conducting instrument approaches. The normal holding point closer to the runway is called the “visual holding point.” You might hear these ILS holding position markings referred to as “CAT I” or “CAT II” (for example, “Runway 15 CAT I holding point”). Sometimes, it may also include the runway designation. The sign displays the letters “ILS” indicating you’re approaching the ILS critical area. You’ll find ILS critical area holding position signs on taxiways near the critical areas of ILS, typically close to the runway threshold or glide slope transmitter. The ILS critical area helps maintain the accuracy and reliability of ILS signals during instrument approaches in low visibility conditions by limiting how close aircraft on the ground get to the ILS equipment (and signals). ILS Critical Area Holding Position SignĪn ILS (Instrument Landing System) critical area holding position sign denotes the ILS critical area. This inscription informs you that you are approaching the critical area for the specified runway’s approach path. The sign displays the runway designation with a dash, followed by “APCH” (e.g., “27 – APCH” or “9 – APCH”). These signs indicate that you are approaching a point where your aircraft may interfere with the safety of the aircraft on the final approach, even if you are not directly entering or crossing the runway. You’ll find the runway approach area holding position signs on taxiways near approach areas where aircraft are descending for landing. Runway Approach Area Holding Position Signs A runway approach area holding position sign for the approach area of Runway 4 A runway approach area with signs for the approach area of Runway 15Ī runway approach area holding position sign indicates where pilots must stop and hold before entering an area that could interfere with aircraft on the final approach. The inscription might include a letter (e.g., “L” or “R”) to identify parallel runways (e.g., “27L” or “27R”). Runway holding position signs display the runway designation, such as “27” or “9,” indicating the runway you’re about to enter or cross. Runway holding point marking on the taxiway You’ll find runway-holding position signs where taxiways intersect with runways.Īccompanying them are painted markings on the taxiway surface, consisting of two solid yellow lines followed by two dashed yellow lines. Runway Holding Position Signs A runway holding position sign marking the entrance to a runway (Runway 4 and Runway 22)Ī runway holding position sign indicates where to stop and hold before entering or crossing a runway. ILS Critical Area Holding Position Signs.Runway Approach Area Holding Position Signs.There are four types of mandatory instruction signs: Location: You can find them at taxiway and runway intersections, holding positions, and other critical points on the airport surface.Shape: These signs are usually rectangular or square, with the text and symbols properly centered.Color: They feature white text on a red background.Mandatory instruction signs have the following characteristics: They also mark areas where aircraft are not allowed to enter at all. Mandatory instruction signs mark critical areas (such as runways) where aircraft are not allowed to enter without clearance. There are six types of signs used at airports: In this article, you’ll learn what airport signs mean, how to read them, and where you’ll find them.Īfter reading this guide, complete your knowledge with our Essential Guide to Airport Markings. At an airport, overlooking a sign could delay traffic at best and be dangerous at worst. Missing a freeway exit sign on the road isn’t a big deal. Quickly reading and understanding airport signs is critical to becoming a safe pilot.
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