Questions tagged [airport-design]

Questions about the planning and design of airports: both the manoeuvring area itself, and the services and passenger facilities.

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Why don't short runways use ramps for takeoff?

Say you had a runway for light aircraft, but only 700 meters or so of runway. Wouldn't it help to end the runway with a ramp that is ~40 meters above ground and slightly facing the sky at a gradient ...
Jalapeno's user avatar
  • 511
2 votes
0 answers
63 views

How are parallel runways named if there are more than 2 or 3? [duplicate]

I know that it's very common for runways to have a parallel neighbor, and they're normally called left and right. I have also seen some runways called "center" if there are three parallel runways. ...
Sam Creamer's user avatar
34 votes
2 answers
10k views

Why are Oscar, India, and X-Ray (O, I, and X) not used as taxiway identifiers?

An old CAR "Licensing of Aerodromes" document indicated that taxiways may not be designated by O, I, or X. Is this still in effect today? Why were (or are) those not used as taxiway identifiers? My ...
Ryan Mortensen's user avatar
28 votes
6 answers
6k views

Why do airports remove/realign runways?

When looking at Google Earth, I often find myself looking for airports. I often notice that no matter what size airport, over time many of them have abandoned old runways and built new runways in ...
doug's user avatar
  • 281
3 votes
1 answer
500 views

What are these protuberances on the north edge of runway 10/28 at Mataveri?

The single runway (10/28) at Mataveri International Airport (IPC/SCIP) on Rapa Nui1 has (at least according to Google Maps) a few paved protuberances emanating from partway down its northern edge ...
Vikki's user avatar
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39 votes
4 answers
4k views

Do any airports have runways or taxiways that cross active rail lines at grade?

Gibraltar has a runway which crosses an active road at grade (which, due to the peninsula’s geography and the resulting constraints on the airport’s location, happens to be the main road connecting ...
Vikki's user avatar
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34 votes
1 answer
7k views

What is the purpose of a walled area in the vicinity of Heathrow Airport?

Looking at a satellite map to the East of Heathrow Airport, there is a small passenger jet parked in a walled off area. Looking at the aerodrome chart the entire area is listed as Bealine Base, which ...
mfurseman's user avatar
  • 443
0 votes
0 answers
57 views

Aerodrome category, certification?

I need to know how you tell the certification of new airport just built? how can you tell if airport is certified for International flights or not? approved for intl flights or not meeting ...
Adham81's user avatar
  • 675
19 votes
2 answers
4k views

What do these white on red words indicate on a London Heathrow taxiway chart?

What do the words in white block capital letters over a red background denote on this aerodrome chart of LHR?
J.FLLT's user avatar
  • 1,221
1 vote
4 answers
829 views

Why don't airports have weigh stations to prevent overweight takeoffs?

Currently, ensuring that an airplane isn't overweight when it takes off relies on the cargo handlers loading the aircraft properly and accurately documenting (on the weight-and-balance sheet) what ...
Vikki's user avatar
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23 votes
1 answer
8k views

Is it possible to drive into Gibraltar Airport's runway?

The runway of Gibraltar Airport crosses an active 4 lane highway Example Video. My question is are there any security measures which prevent normal traffic from entering the airport through the ...
anshabhi's user avatar
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14 votes
2 answers
3k views

Are taxiways numbered in a predictable order?

When taxiing at an airport without a full-blown airport diagram (most commonly, a non-towered airport), how does a pilot know whether taxiway A (Alpha) is on one end of a runway, or the other? Or, in ...
Conway's user avatar
  • 589
50 votes
13 answers
15k views

Is there any combination of two airports that are connected via taxiways?

Are there any 2 (or more) airports that are ground-connected so that e.g. aircraft can taxi between them? Would that be even possible from a definition point of view, having a common area with two ...
Florian's user avatar
  • 3,839
3 votes
3 answers
310 views

What runway materials reduce skidding in wet conditions?

What are the possible materials that can be used on a runway, so as to reduce the plane speed and certainly stop the plane while preventing skidding when the runway is wet?
akampa junior's user avatar
4 votes
1 answer
354 views

Are there any airports that require arriving/departing flights to fly under an obstruction?

Are there any airports with approaches and/or departures that require pilots to fly under an obstruction at some point (thus meaning that, for at least a short segment of the approach or departure, ...
Vikki's user avatar
  • 28.1k
17 votes
2 answers
5k views

Why so much ground time at Frankfurt Airport?

Disclaimer: Total layman here. I frequently fly into and out of Frankfurt Airport (FRA) with regional jets (flight time advertised as 45 minutes) and one thing that everyone is always annoyed about ...
Martin Ba's user avatar
  • 273
3 votes
7 answers
2k views

Has this "straight through" airport design ever been contemplated?

Here's an airport, with some planes on the various runways/taxiways and some using the terminal .. (airliners in green) Airport/terminal design is really tricky. There are many spatial problems ...
Fattie's user avatar
  • 1,793
3 votes
2 answers
1k views

Why are some taxiways named with two characters?

The picture above is a diagram of the Taoyuan Airport, Taipei, and as you can see in the diagram, some taxiways are named with two characters like “NC, NP, WC.” My question is: Is there any good ...
lemonincider's user avatar
  • 7,537
7 votes
2 answers
394 views

Do any airbridges move vertically to match arrival/departure halls?

One of the things that always baffles me is that airports almost always have the arrivals and departures sections on different levels, but that you exit the aircraft into the departures hall. In some ...
Maury Markowitz's user avatar
7 votes
3 answers
2k views

Why not a second airbridge at the back? [duplicate]

Airbridges slow boarding and disembarking because (normally) there's only one door in use. But... why? Now the most obvious reason would be that it's very easy to have the aircraft pull forward until ...
Maury Markowitz's user avatar
5 votes
2 answers
1k views

Why is there such a long displaced threshold on 22R at JFK/KJFK?

This video seems to raise a whole bunch of questions, but here's one I have: Why such a long displaced landing threshold on 22R at JFK/KJFK? (Scroll down to the 4L/22R section for details.) ...
pr1268's user avatar
  • 1,819
4 votes
1 answer
378 views

What is the difference between the red and black box identifiers on UK airport charts?

On UK airport charts like the one below for Manchester (EGCC), what is the difference between an identifier with white lettering on a red square and one with yellow lettering on a black square with a ...
slantalpha's user avatar
  • 4,193
8 votes
2 answers
1k views

What is the purpose of this loop in a taxiway?

This image is of Mariscal Sucre International Airport near Quito, Ecuador. (Official site / in English) What is the purpose of the loop in the taxiway plainly visible in this image? From Google ...
pr1268's user avatar
  • 1,819
2 votes
1 answer
617 views

Are taxiways always one-way towards a specific, fixed direction?

I was studying the airport diagram of JFK and I began to wonder if aircrafts use taxiways as a one-way road. In case they do, is the direction of a taxiway fixed or does it change according to the ...
Vector Zita's user avatar
  • 1,853
2 votes
1 answer
1k views

How can I calculate the Obstacle Free Zone of an aerodrome?

How can I calculate the Obstacle Free Zone of an aerodrome?
Savvas Markianidis's user avatar
4 votes
3 answers
2k views

Why do simultaneous-ops parallel runways need to be so far apart?

In the answers to this question about Denver's widely-scattered pinwheel of runways and this question about Schiphol's runway out in the middle of nowhere, it's mentioned that parallel runways are ...
Vikki's user avatar
  • 28.1k
2 votes
1 answer
8k views

What is the difference between a Stand and Gate in Airports? How do they differ ?

I have seen Aircrafts having been assigned a Stand and Gate, So wanted to know whether the stand and gate are same physical location of airport or they are different but have link between them.
user30140's user avatar
14 votes
1 answer
2k views

Are there any "captains-only" airports in the U.S.?

Some airports in the world only allow captains to take off or land the aircraft, due to airport design or environmental conditions (obstacles, high winds). Examples include: Funchal (Madeira, ...
Stefan's user avatar
  • 4,692
10 votes
1 answer
766 views

How will aiport operations at KOAK be affected when taxiway W is promoted to a runway?

For the record, my question is not about mistakenly using a taxiway as a runway. I've noticed recent changes to the sectional and TAC VFR maps around Metropolitan Oakland International Airport (OAK/...
pr1268's user avatar
  • 1,819
13 votes
1 answer
788 views

Why is London City getting a virtual tower?

(Source) London City is not a remote-low-traffic airport. Staffing a remote airport is like having lighthouse keepers. That I understand. And yet the tower will be closed, and moved off-airport to ...
user avatar
3 votes
2 answers
382 views

Are gate ramps sloped?

If you’ve ever seen an airliner park at its gate, you’ll likely note that sometimes it will move beyond slightly beyond its designated parking line. However, you may see that after the brakes are ...
TayE's user avatar
  • 6,565
18 votes
4 answers
2k views

Why does the Las Vegas Airport have three control towers?

Why does the Las Vegas Airport have three control towers? I just noticed, and I find it a little weird. There should only be one... Does anybody know details on how this came about? And how they work ...
mike's user avatar
  • 2,160
4 votes
1 answer
6k views

What are the dimensions of the parking apron?

What are the approximate dimensions of the apron aircraft zones, ramp, aircraft stands such as Airbus A380, Boeing B737, F16.
Filip Kłusek's user avatar
5 votes
1 answer
409 views

Why all the taxiway construction at PHL?

Perusing Google Earth around Philadelphia, I noticed some new taxiway construction at PHL/KPHL. The "time machine" feature of GE shows this to be new (latest imagery data is May 2016)--the paved ...
pr1268's user avatar
  • 1,819
8 votes
1 answer
2k views

Telluride (KTEX): Why is the localizer antenna located where the glideslope should be?

Telluride (KTEX) in Colorado, USA: Source As visible, the localizer antenna for RWY 09 is located where the glideslope antenna is usually found, abeam the touch down zone. The localizer is normally ...
mins's user avatar
  • 71k
8 votes
2 answers
2k views

Why building a stopway instead of just building a longer runway? [duplicate]

I don't get the point of building a stopway. If you have the space to build a stopway, you could just extend the length of the runway. Why are stopways necessary?
user6245072's user avatar
78 votes
4 answers
16k views

Why do control towers have tilted glass panels?

Almost all control towers I've seen have tilted glass panels: Amsterdam-Schiphol tower (EHAM), source. What is the reason behind this choice? How is the tilt angle determined?
mins's user avatar
  • 71k
3 votes
1 answer
2k views

What is the circular pavement at the end of a runway called? [duplicate]

What is the circular pavement at the end of a runway called where aircraft turn 180 degrees to then backtrack? Is the term runway turning bay appropriate for that? The problem is that there is a ...
Valeriya's user avatar
  • 103
8 votes
3 answers
12k views

Why are most runways laid out in a generally East-West direction?

Runways are named by a number between 01 and 36, which is generally the magnetic azimuth of the runway's heading in decadegrees. From what I have read, most airport runways are aligned along an East-...
Huntkil's user avatar
  • 879
4 votes
3 answers
752 views

Would it be viable to use jet blast deflectors as a power source?

From an environmental point of view would installation of windmills just before jet blast deflectors provide enough power to power up all machinery at airports? How much of a reduction in reliance on ...
securitydude5's user avatar
29 votes
3 answers
11k views

Why is Heraklion airport a 'captains only' airport?

I was recently watching "EasyJet: Inside The Cockpit" and it said pilots need 4 shoulder stripes to land at Heraklion International Airport, “Nikos Kazantzakis” (IATA: HER, ICAO: LGIR), but it didn't ...
L.Halfpenny's user avatar
  • 1,697
4 votes
1 answer
984 views

How are the navaids that are on the airport ground powered?

How are navaids (such as the ILS localizer) that are on the airport ground powered? Are they connected to the airport's power? Do they have their own backup power?
Saito's user avatar
  • 51
3 votes
1 answer
692 views

How far from a taxiway, can a walking or biking trail be built?

How far from a small single runway airport's taxiway, can something like a walking or biking trail be built?
Tony's user avatar
  • 31
3 votes
2 answers
1k views

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.
Daniel Offerman's user avatar
6 votes
2 answers
2k views

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.
Andrew's user avatar
  • 61
13 votes
4 answers
9k views

Why do some airports have more than 2 runways, when LHR can get by with 2?

I was looking at aerial imagery of various airports and noticed how some have a large number of runways (4-6), while others have a small number. Specifically, I noticed that Heathrow (LHR) only has 2 ...
PhilippNagel's user avatar
27 votes
3 answers
6k views

Is there any technical reason that prevents installation of a jet blast deflector at Princess Juliana airport?

A jet blast deflector (JBD) or blast fence is a safety device that redirects the high energy exhaust from a jet engine to prevent property damage and injury. Regarding the incident on July 13, 2017 ...
vasin1987's user avatar
  • 8,070
2 votes
1 answer
1k views

Is "passenger loading bridge" a synonym to "contact stand"?

In a master plan of an international airport, which is already approved by the client, I face some confusion between the terminology of the PLB and the contact stand. Sometimes they're mentioned just ...
A.K.Y.'s user avatar
  • 43
2 votes
1 answer
452 views

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 ...
A.K.Y.'s user avatar
  • 43
1 vote
0 answers
486 views

What is the minimum separation between two A380's while taxing in-line?

If you are tailing another A380 on the taxiway, how much separation do you need from your nose to the A380 that you are tailing?
ilovebigplanes's user avatar