A small number of airports have three parallel runways-the runway in the middle gets a “C” for center.ĭuring airport operations, runway number designations are pronounced individually. The ”L” and ”R” designate the relative position (left or right) of each runway respectively when approaching/facing its direction. One is Runway 4L-22R and the other 4R-22L. For example, Boston, Massachusetts’ Logan International Airport (pictured) has two pairs of parallel runways. Many large airports have parallel runways, which requires further designation of each runway. Therefore, an aircraft taking off easterly on Runway 9-27 would be considered to be utilizing Runway 9 for departure. Furthermore, each runway end is identified separately. Most runways can typically be used in either direction, depending on prevailing winds. Runway 36 means you’re moving north, and so on. So if you’re on runway 9, then you’re heading east (90 degrees on a compass). But the “W” is numbered 9 because the runway number is connected to the direction the plane is traveling. On a handheld compass, south is 180 degrees (so 18 in runway terms) and west is 270 (27). You might be thinking that the numbers on this diagram are backwards. For example, Runway 9-27 is oriented east-west. The opposite end of the runway always differs by 180 degrees, so it’s numbered 18 higher or lower. The orientation of taking off and landing is specific to wind direction, which is constantly changing on the open seas, so the ship is turned into the wind. Naval aircraft carriers do not have runway designations painted on the flight deck. Runway markings, including the runway designations, are always white in color. Therefore, many large airports have a wide range of runway configurations to accommodate changes in seasonal wind directions. Runways are aligned predominantly to take advantage of prevailing winds. First, a few factoids before I explain:Įvery public use and military airfield on the face of the earth has (or should have) runway designations permanently painted at each runway end.Įnglish is the universal language of aviation, and runway designations are displayed via the same numeric system (Arabic) as used in the United States and Canada. What do they mean? It's an interesting question, and one that's obviously important for pilots. Automated queries against this websiteĪre strictly prohibited, and all activity is logged and analyzed.I’ve been asked many times the meaning of the big painted numbers at the end of each airport runway. A number of mechanisms and markersĮxist in the database to protect against and identify infringement / copyright. Without the express permission of Dauntless Aviation - licenses for use of part of all of this data are available for purchase enquire via theĭauntless Aviation helpdesk. The material in this database is subject to database copyrights held by Dauntless Aviation and may not be copied Verify any information that you receive via PilotNav with current and canonical charts and other official documents. Information provided via PilotNav comes from a variety of official and unofficial data sources.Īs errors are possible, do not use PilotNav for primary flight planning purposes. © 2007-2023 Dauntless Aviation, all rights reserved RNAV1 (DME/DME or GNSS) SID Rwy 08/26 ORIST 1C 1D SID Rwy 08/26 LUSIT 1A 1B DIN 3A 2B ORVAL 1A 1B Instrument Approach Procedure Coding Tables RNP Rwy 08 SBAS FAS Data BLOCK Coding Data - RNP Rwy 26ĬHANNEL Islands Control Zone Visual Reference Points (VRPs) and Recommended VFR Route From SOLENT CTA Instrument Approach Procedure Coding Tables - RNP Rwy 26 SBAS FAS Data BLOCK Coding Data - RNP Rwy 08 STAR Rwy 26 TUNIT 1J SKERY 1L 1J BIGNO 1L 1J STAR Rwy 08 ORTAC 1K TUNIT 1K SKERY 1K BIGNO 1K LELNA 1K
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