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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Who bears responsibility when an aircraft takes off from the wrong runway?

On occasion, an aircraft is cleared for takeoff on one runway, but actually departs from another runway. This has resulted in embarrassment as well as catastrophe. When this occurs, are both the ...
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Why are many runways used just for departures/arrivals?

At LAX and many other large airports they designate certain runways for landing or takeoffs Normally. Why is this? I think its inefficient use of available runways.
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For designing a runway, what are the largest cargo airplanes in use?

I am working on a project where I have to design a runway for large cargo planes and I need to know what kind of planes I should assume would land there.
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How do pilots of big jets determine if they are clear of the runway after landing?

The pilots of small aircraft can easily determine if they're clear of the runway by visually looking back through the side windows. How do the pilots of big commercial jets determine that all parts ...
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Do I need to use an airfield to take off or land a powered paraglider?

Most aircraft require a runway to take off and land, however powered paragliders simply attach to the pilot's back, requiring the pilot to run a few metres to take off. The landing distance is also ...
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Can a runway turnpad be used as a runway holding position?

Can a turnpad also be used as a runway holding position?
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What is this white rectangle painted on runway 23 at KCRW?

(Related to this question.) Runway 23 at Charleston, WV (KCRW) appears to have a (roughly) 500' x 50' white rectangle painted on the touchdown zone (I've added red arrows pointing at each end of the ...
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1answer
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What does it mean when a runway's safety area is not standard?

If an airport has a NOTAM that states that a runway safety area is not standard, what does that mean? Here's an example. ...
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How much runway is needed for comfortable operations in a PC-9?

I am familiar with simple single engine props and twins and am thinking of moving up to turboprops like a Soccata TBM 700 or Pilatus PC-9. How much runway do aircraft like these need to operate ...
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Do you pay to Touch-and-Go?

I understand you pay to land at an airfield, but do you pay to Touch-and-Go? Pilots will often practice many Touch-and-Go's at an airfield, are you billed for each one (assuming you pay something to ...
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What is the difference between P208 and P209 base runway materials?

Runways are made with P208 base or P209 base does anyone know why there are labeled differently from regular crushed aggregate base? And what the different uses are for?
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Can we apply landing minimum with ALS when ALS is available with low intensity only?

Can we apply landing minimums with ALS when the ALS is available with "low intensity" only? For example, the following NOTAM is issued at KABQ: !ABQ 05/270 ABQ RWY 03 ALS OUT OF SERVICE EXC LOW ...
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Yellow chevron markings at end of runway, what do they mean?

In this YouTube video (link starts video at time of interest), the pilot appears to land in the area marked by the large yellow chevrons, in what appears to me (a layperson) to be a taxi way. What ...
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What is the origin of the practice of numbering runways by magnetic heading?

Today, runways are always named according to the magnetic heading. How did this practice start? When and where was the practice invented? Whose idea was it, and how did it catch on?
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Why do some aircraft carriers have an upward starting runway? [duplicate]

I noticed that some aircraft carriers have an upward starting runway while others don't. What's the reason for this? What are the advantages of both designs and how come not one of them has prevailed ...
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What would happen if an aircraft were to touch down on EMAS?

What would happen if a jet (say, a A330) were to touch down on the Engineered Materials Arrestor System (EMAS) just before the runway, instead of on it? According to the FAA the EMAS is designed to "...
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Why didn't planes land from the sea in the old Kai Tak Hong Kong airport?

Reading up on the old Hong Kong airport Kai Tak, I'm left with the question as to why the planes didn't land from the sea? I know that takeoff was done towards the sea, but is there any reason that ...
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How much power do planes use when taking off at London City?

I watched a video of an A318 taking off at London City and it took just 20 seconds from setting takeoff thrust to getting airborne. BA A318 takeoff @ LCY (takeoff thrust @ 1:23, airborne @ 1:43) and ...
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Are flexible pavements not recommended in hot climates?

I've received a feedback from an airport manager that flexible pavement is not recommended for runways within the regions of an extreme hot climates; this is because of the particles of asphalt that ...
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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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I'm so confused how airport numbering works [duplicate]

I'm so confused how airport numbering works. If an airport has a single runway oriented 063 degrees and 243 degrees M. What would be the runway designator?
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How to verify the runway numbers in a systematic way given the high workload during landing?

I have never had a runway number verification on my checklists because normally the landing checklist is completed and stowed by the time I am on short final and can clearly see the numbers. However, ...
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Why is the font size of runway numbers in Canada small?

I've noticed that on runways at Canadian airports, runway numbers are painted noticeably smaller than runway numbers at airports pretty much anywhere else. For instance, here's the beginning of runway ...
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How are landing aircraft handled during an emergency runway closure?

A Hypothetical scenario A landing aircraft at a busy airport such as London Gatwick LGW has an issue during landing that requires the immediate closure of the runway. My understanding is that ...
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To what requirements / assumptions RSAs & EMAS designed?

I've several questions regarding runway safety area (RSA) and engineered materials arresting system (EMAS): Is RSA/EMAS designed for impact loading at the point of touchdown and to absorb energy of ...
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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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How often, and how promptly, do airports have to renumber runways because of magnetic pole drift? [duplicate]

This question was prompted by this answer to another question by Jamiec. As the magnetic poles drift (usually pretty unpredictably), runway numbers become inaccurate. As noted in the linked answer, ...
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Does runway 32/33R at Madrid actually have a kink in it?

In this satellite image of Madrid airport (MAD/LEMD)... Source:Google maps satellite view Alternate link from maps.google.nl still renders incorrectly for me, but appears fine for others... ...it ...
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What is the table top runway maximum slope?

What is the maximum permissible slope for a table top Runway (elevation 1600 m) to be made on hill top ?
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How do Rapid Exit Taxiways improve aircraft movements?

I have been reading about Mumbai Airport (CSIA) (IATA: BOM ICAO: VABB). On it they mention: The airport has two intersecting runways. Both runways have been upgraded to Code F, which means they ...
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Does runway centerline lighting provide information about distance left before end?

I asked Does runway center lighting increase runway lifetime? and this video was was mentioned. I don't really understand the significance and I first assumed centreline lighting in night conditions ...
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Why are most runways made of asphalt and not concrete?

From the little I know about vehicles in cities, nowadays concrete is preferred to asphalt for road construction as, while initially more expensive, concrete is supposed to be cheaper to maintain. ...
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Which civilian airport has the most runways (current and planned)?

I just read Is the airport capacity related to number of runways? . While there are a host of factors, the idea of more runways is obviously so that more flights come in and out. Which is the biggest ...
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Does runway center lighting increase runway lifetime?

I wonder if the centerline lighting helps add a few more years to the runway, especially with heavy aircraft like A350/A380, in addition of being helpful for landing and takeoff? My question is based ...
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What are those markings on runway 25L at Frankfurt Airport?

50°01'59.15" N 8°34'05.10" E What are those markings on runway 25L at Frankfurt Airport? UPDATE: July 2016 imagery shows the runway as closed, top image is c. 2015.
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How do pilots identify the taxi path to the runway?

When the aircraft is readying to taxi, the ATC asks them to proceed to some runway number, say runway 09. In big airports, how do the pilots identify the correct path to their runway? Does the ATC ...
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287 views

How can the runway allocation process be optimised?

I would like to write a programme that would be able to find the optimal arrival sequence for a given list of aircraft on a given airport. By optimal I mean in terms of delay, fuel burn and runway ...
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775 views

What is this pattern on this runway?

What is this pattern on this runway? What is its function? Location on Google Maps
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How do we use the runway condition assessment matrix?

Starting on October 1st, 2016 the FAA is moving away from providing Mu values for runway friction reports to a new format showing contamination type and depth for each third of the runway. Along with ...
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What would be the designation for 4 parallel runways? [duplicate]

If an airport were to have 4 parallel runways (ex if KSEA added another one), what would the designations be. Would it be 34L, CL, CR, and L? I know in Orlando they are separated by the terminals, and ...
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799 views

Why did the north / south runways close at Daugherty Field (KLGB)?

The north / south runway at KLGB were recently closed. Does anyone know the reason for the runway closures?
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How do pilots use stopway, EMAS, clearway and displaced threshold?

I noticed in Why is “clearway minus stopway” used in V1 adjustments? that a stopway and an EMAS are both indicated by yellow chevrons: Same Opa-Locka stopway on the left, and San Diego EMAS on the ...
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Why is "clearway minus stopway" used in V1 adjustments?

Illustrations and/or satellite imagery to explain the difference between clearway and stopway and explaining how they are used by turbine aircraft would be great. From B787 FCOM.
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Why five touchdown zone markings for only one aiming point?

RWY 24 at Paris-Orly is a runway sustaining precision approaches. There is an aiming point and five touchdown zone markings. Orly RWY 24, source: Google Maps Aiming the visual aiming point, or ...
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Were inclined runways ever under consideration?

A long time ago I read an article (in Popular Science, probably) of a plan for an airport runway constructed on a grade, so that one end was ten stories higher than the other. The idea was to save gas:...
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Why don't light-up runway numbers similar to runway lights?

I know that some airports have lights on the runway that can be controlled with the mic transmit button. Additionally, during night flight, runway lights help the pilot determine where the runway is ...
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What are these large yellow circles painted across the runway?

There are not many yellow markings on a runway. This row of six is painted about 400m from the threshold at both ends: Montgomery Airport (Alabama) - Source: Google Maps What does it mean for a ...
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What are these symbols on the runway?

As just a passenger, not a pilot, this may be a very basic question, but when I am on an airplane leaving the terminal, it goes over a symbol on the tarmac that looks like this: Also I see ...
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Can you file a flight plan to an airport whose runway is NOTAMed closed?

We're planning a flight (under IFR) to an airport where the runway is notamed closed until 1900L. The airport authority has said it will likely be open much earlier, so we're hoping to to take off ...
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Is there a time limit for a line-up and wait?

So this was from a barrage of History Channel documentaries celebrating the century of flight, some 13 years ago. In one of the shows, I recall it being said that an airliner has a time limit for a ...

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