What are the codes in the runways?

The numbers are issued for each third of the runway: touchdown, midpoint and rollout, hence the 5/3/2 format. The FAA has provided a chart with explanations for each value – in this example 5 means the braking action at touchdown is good, the midpoint is medium and the rollout is medium to poor.



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For code, F ICAO to be 155 meters specifies aircraft the width of the lower surface. The justification used is that not only the wingspan is 20 meters larger (on initial code E 60 meters) but also the runway width is 15 meters larger (60 meters code E).

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Runway numbers are actually a reference to the closest magnetic heading of the runway. The runway heading is rounded to the nearest 10 degrees, and the zero is removed. This number is then assigned to the runway. Further differentiation can be achieved with letters on parallel runways.

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Runways are named by a number between 01 and 36, which is generally the magnetic azimuth of the runway's heading in decadegrees. This heading differs from true north by the local magnetic declination.

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ICAO SARPs relating to runways are determined according to runway length using the standard Runway Code categories. Code 1 runways are less than 800 metres long, Code 2 runways are 800-1199 metres long, Code 3 runways are 1200-1799 metres long and Code 4 runways are 1800 metres or more in length.

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Advertisement. The first digit in the number uses the actual bearing and the second digit is rounded off to the nearest degrees. The last number in the degree is always dropped. Advertisement. So if a runway number is 27, it means that the direction of the runway is 270-degrees from North.

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Is There a Runway 0? You shouldn't find any runway numbered either “0” or “00”. Any runway which points to magnetic north will normally be given the designator “36” (as in 360 degrees). This will also correspond with the headings read out by both ATC and the pilot.

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The letters, differentiate between left (L), right (R), or center (C) parallel runways, as applicable: For two parallel runways “L” “R.” For three parallel runways “L” “C” “R.”

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For instance, an Aerodrome with a reference code 4E can accommodate aircraft with a “Reference Field Length” of 1800m and above and a wingspan up to 65m.

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So if you're on runway 9, then you're heading east (90 degrees on a compass). Runway 36 means you're moving north, and so on.

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A runway always has a number between 1 and 36, and that number isn't just the runway's nickname, but also indicates how many degrees away that runway is from magnetic north, rounded to the tens. So runway 24 is 240 degrees from magnetic north, and runway 36 runs right along it.

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A: The runway number is the approximate magnetic heading. As an example, runway 35 is pointing approximately 350 degrees magnetic. The opposite end of the runway is 17 or approximately 170 degrees magnetic.

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All runways are numbered. The number used corresponds to the magnetic direction of that runway when landing or taking off on it. The runway number is abbreviated and missing the last digit. As an example. If you are landing or taking off on runway 20, it is actually 200°

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The number four indicates a runway length of greater than 1800 metres and the letter C means the runway is designed for aircraft with a wingspan of between 24 metres and 36 metres and an outer main gear wheel span of between six metres and nine metres.

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