Questions tagged [runways]

A runway is a "defined rectangular area on a land aerodrome prepared for the landing and takeoff of aircraft" (ICAO definition).

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What exactly is the difference between HIALS and HIALS-II lighting systems?

What exactly is the difference between HIALS and HIALS-II lighting systems? The symbols at the beginning of the runways are very different and I cannot classify them in a particular way. But in ...
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How can a touchdown zone RVR report for one runway be different than the rollout report for the runway going the opposite direction?

I saw an RVR report in KSEA where 16C was 800 1200 1800 (touchdown zone, midpoint, rollout), and 34C was 1800 1200 300. I always thought the same scatterometers used for the rollout side on runway as ...
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What is the value allowed for runway transverse slope?

What is the range allowed for transverse slope for runways used by commercial aviation?
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ACN/PCN Reporting System - Tire Pressure

I have an Airbus A320neo WV054 and I want to operate at a RWY that has PCN 55/R/D/Y/T. Below is my aircraft ACN data as per the Aircraft Characteristics Manual. Looking at the table I can see that my ...
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Why are the FAROS and the RIL contents removed from AIM?

I was studying runway status light and I found that FAROS (Final Approach Runway Occupancy Signal) and RIL (Runway Intersection Lights) are deleted when I read FAA AIM. It is deleted in the FAA AIM ...
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Is the longitudinal extremity of an obstacle limitation surface based on the threshold or the displaced threshold?

In a case where a displaced threshold (DTHR) is present, should the longitudinal extremity of the obstacle limitation surfaces (for example, the conical surfaces) be counted from the threshold (THR) ...
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Why do so few non-US runways have EMAS beds?

As occurrences of an aircraft running off the end of the runway and hitting things tend to leave both the aircraft and whatever it hits rather the worse for wear, much effort over the years has gone ...
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How is The Published Runway Touchdown Zone Elevation Decided?

The touchdown zone of a runway can be up to 3,000 feet long if the information I have is accurate. How is the published Touchdown Zone Elevation determined? Is it the center, an average of the ...
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Why is crushable-block EMAS the only overrunning-aircraft-stopping system in wide civilian use?

Because runway overruns often end badly, and many runway ends (especially older ones) don’t have enough clear space available beyond the runway end for a full-size runway safety area (RSA), EMAS has ...
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Is there an equivalent of the Threshold Crossing Height for departure procedures?

The definition for the Threshold Crossing Height is, according to the sources that I have checked, "the theoretical height above the runway threshold at which the aircraft's glideslope antenna would ...
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What happens if the current ICAO method disagrees with double wheel/dual tandem etc?

Is the old U.S. method (a weight max for each landing gear kind) simply ignored? Planes with 3, 12, 14 and 22 wheels are common after all but gear types with those numbers often aren't listed. If the ...
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What is the technical reason behind why the FAA standard uses a 1000 ft aiming point and much larger runway numbers than the ICAO standard?

FAA and ICAO standards, respectively. If the larger FAA runway numbers are for easier identification, why wouldn't ICAO also adopt this feature to enhance safety?
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Perpendicular Distance between PAPI and Aiming point

We are in the middle of a new runway construction. The airport requested the aiming point to follow the PAPI. Should they be aligned head to head, or there can be some meters difference?
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Can a stopway withstand thrust of B737 engines on takeoff if the aircraft is lined up on the edge of the runway?

Can the thrust of Boeing 737-300 engines break the asphalt surface of a stopway marked with yellow chevrons? Can anyone give a documented reference?
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How to find runway direction classification, code number and code letter?

I am creating a solution that generated the limitation surfaces for runways according to ICAO Annex 14. One of the parameters that I need is the runway directions classification, code number and code ...
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