Questions tagged [taxiing]

The process of driving an aircraft on the ground, e.g. from the gate to the runway.

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2answers
401 views

What are the meanings of those SFO Taxiway Marking?

I'm studying aviation and pulled up a Google Map satellite view of San Francisco International Airport (KSFO) and was wondering if someone could shed some light on what a few of the taxiway markings ...
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1answer
380 views

How much fuel is used for preheating the outer engines of a four-engine airliner that were not used for taxiing?

Many questions and observations here have highlighted the idea of using some kind of electric towing system for towing airplane to and from the runway, instead of using fuel to taxi. One of the ...
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2answers
745 views

Ground Turning Radius

Regardless of any legal regulations, is there a standard technique for designing the ground turning radius of an aircraft, or is that typically just a fallout parameter?
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0answers
43 views

What are the tools that aid accurate tiller-steering in large airliners? [duplicate]

Airliners often need to make rather tight turns at airports. It's difficult enough maneuvering around small obstacles in a car if they can't be seen, and that's with the benefit of a good awareness of ...
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1answer
675 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/...
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3answers
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Why not tow aircraft instead of single-engine taxi?

To save costs, budget airlines could potentially eliminate the single-engine taxi that is standard. Companies are looking into things like electric motors on the wheels of airliners for taxi, which ...
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5answers
5k views

Do pilots have to stop at the hold position of the takeoff runway?

Or in other words, is the takeoff clearance ever given (implicitly or explicitly) before the aircraft reaches the hold position, so that the pilot can keep rolling through the hold line and to the ...
6
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1answer
1k views

Do the landing gear modules rotate?

I'm particularly thinking about larger aircraft with more than two sets of main landing gear. It's pretty obvious you would not want them to rotate while landing and take-off, but while taxiing ...
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3answers
2k views

Why aren't there brake lights on aircraft?

Why don't aircraft have brake lights so you can see when an aircraft in front is slowing down? I know there are air traffic controllers to control aircraft but they cannot do much about an aircraft's ...
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2answers
2k views

During single-engine taxi, how is the asymmetric power compensated for?

For various reasons (e.g. noise, fuel savings), some airlines allow single engine taxiing. Obviously, this produces an asymmetric thrust during the taxi. If the left engine is used, the aircraft ...
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1answer
828 views

What is the maximum nose wheel deflection angle?

What is the maximum nose-wheel angle of deflection on modern commercial aircraft such as the Boeing 787? Can it deflect to 90 degrees or even more?
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1answer
308 views

Why don't passenger planes move back by their own means before taxiing? [duplicate]

As far as I know, passenger planes needs a puller/pusher truck to go back in the land. But why they don't go back without truck assistance?
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1answer
3k 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.
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1answer
355 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 ...
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1answer
252 views

Is there a regularized width of yellow taxiway ground bands?

What is the width of the yellow stripes that are painted on the ground of the taxiway? Is it the same on the whole taxiway or does it vary from an area to another? Is it mentioned in the aerodrome ...
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2answers
6k views

How do tugs push back the Antonov 225?

How do tugs push back aircraft with 2 nose gears such as the Antonov 225?
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4answers
5k views

Do the wheels of taxi-capable helicopters have power?

There are many big helicopters which seem to taxi just as good as any fixed wing aircraft, for example CH-47. Do their landing gear wheels have power or they also taxi using thrust like their fixed ...
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4answers
2k views

Can a seaplane make a long distance sea voyage on the sea?

In general, if a seaplane can fly X distance, can it travel that distance on the surface of the water as if it was a boat or ship? In other words, this would be equivalent to taxiing all the way to a ...
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1answer
934 views

What is the minimum number of engines required for taxiing an airliner?

What is the minimum number of engines required for taxiing for jet airlines from a fuel savings perspective, for 4 engine configurations and 2 engine configurations? Is using fewer engines counter ...
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1answer
360 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?
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3answers
2k views

Which engine(s) do airliners taxi with? [duplicate]

I have read that pilots only taxi on 1 engine to save fuel. Which engine does a twin engine jet such as a 737, 777, a320 or similar use to taxi? Left or right, or does it vary by pilot or some other ...
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1answer
926 views

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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1answer
3k views

What is “judgemental oversteering” in taxi procedures?

I found a phrase that I don't understand while reading Jeppesen charts: "judgemental oversteering". I found it in general information about taxi procedures. As I understand this procedure applies ...
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1answer
504 views

Do aircraft always have the right of way on the ground? Or must they yield to police/fire/ambulance?

I know FAA said aircraft always have the right of way over ground vehicles. What if a police car, ambulance or fire truck needed to pass?
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1answer
2k views

What are the areas marked in green around the taxiways?

In the photos for this AvHerald article you can see areas marked in green with yellow stripes around the taxiways. The entire maneuvering area appears to be solid concrete. The green painted areas ...
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6answers
15k views

Does taxiing time gets considered in a pilot's flying hours?

Basically the title. This could be referenced to US or European rules.
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3answers
6k views

How can two planes be on the same taxiway facing opposite to each other?

Curious to know how two planes can be on the same taxiway facing opposite to each other at the same time? Please have a look at the satellite view of the following coordinates in Google Maps: (-27....
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1answer
435 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?
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1answer
4k views

Why are only captains allowed to taxi the aircraft?

At most airlines, only the captains are allowed to taxi the aircraft (i.e. Lufthansa). Even if the copilot is pilot flying, the captain will taxi the aircraft to the runway, and later from the runway ...
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1answer
1k views

How do pilots hold the runway centerline during takeoff?

Holding the taxiway centerline during taxi is usually done with the nose gear tiller in commercial aircraft. During take-off, until which speed is the tiller used before using pedals to control runway ...
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2answers
4k views

What are these devices on or adjacent to an airport taxi-way?

Can someone identify and provide some description of the objects marked in this photograph? Especially those marked with yellow and red seem to be placed in the middle of a road and that seems to ...
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2answers
9k views

Taxiing with one engine: Is engine #1 always used or do they switch?

I recently travelled with an A320 and an A321 from FRA (Frankfurt) to TXL (Berlin) and back again. On this and on previous flights I already noticed a whining sound, much louder than other sounds, ...
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1answer
3k views

Who has right of way on the ground?

In the air, concept of right of way does exist. Does it also exist for ground operation as well? Possible conflict might come from where taxi ways intersect each other. Do pilots have to agree with ...
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6answers
18k views

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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1answer
277 views

Why are offset lead-in arcs used?

Why are offset lead-in arcs used? Image source: Google Earth, showing offset lead-in arcs. There is little literature on the subject matter. I did research it a while back but I lost the PDF's, and ...
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2answers
900 views

Can I legally taxi a seaplane in a canal or channel?

I live on a good sized canal in a subdivision in Florida, USA. Is it legal for me to taxi down the canal about 100 yards? Is it legal for me to taxi down a large main channel which is part of the ...
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2answers
1k views

How far ahead will ATC issue runway crossing clearances at controlled FAA airport?

In past years it was common to get a taxi clearance that would include all required runway crossings. This was true even if there were several runway crossings over a long distance. Now it seems that ...
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2answers
2k views

How does an aircraft turn while taxiing?

I know that an aircraft uses its own power (thrust) while taxiing to move forward. But how does it turn? Do the front wheels pivot? Do you simply apply more power to the left engine if you're trying ...
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1answer
242 views

When taxiing a taildragger across a kerb, is it best to cross straight-on or at an angle?

The grass taxiways at my local aerodrome are sometimes crossed by hard surfaces. Where they cross, the levels don't quite match, so there's a bump as you cross: not quite a pavement kerb, but still a ...
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1answer
924 views

How far can a passenger plane taxi?

Most commercial flights will have to taxi a short distance to the end of the runway, before actually taking off. But in an absurd, absolutely extreme case, what if that passenger plane could only taxi,...
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0answers
52 views

Seatbelts-on during taxi protocol: Risk assessment [duplicate]

Typical taxi speeds are less than 20 knots. These are speeds at which city-transport buses regularly operate & even exceed. Buses don't mandate seat belts & in fact even allow standees. Now ...
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2answers
923 views

Is there a formula for calculating the pivot point of an aircraft while turning on the ground?

I'm working on a program that requires a taxiing passenger aircraft (of any model) to perform a semi-accurate turn given a steering angle of the front landing gear. For this I need to calculate the ...
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3answers
4k views

Why do you have to keep your seat belt fastened after landing?

What's the point of the usual "please keep your seat belt fastened until the aircraft stops completely (at the gate)" in large passenger aircrafts? Since the plane is on the ground, it is not moving ...
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1answer
7k views

Which speed shall be used on high speed taxiway? [closed]

After landing, which speed shall we use to exit from high speed taxiway? Max. 60 knots ground speed or indicated air speed?
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1answer
541 views

How much thrust and fuel are required to get a B767 moving from a complete stop?

How much thrust is involved, and how much fuel is burned, to get an aircraft like a Boeing 767 - or something similar - moving from a complete stop? Recently, I was on a 767 that took the "scenic ...
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1answer
941 views

How safe is the single engine taxi out for twin engine aircraft?

Fuel conservation programs are leading to single engine taxi out, asking the crew to start the other engine near or on the position 2, where the ground crew cannot monitor the engine's status outside ...
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1answer
3k views

Why do I hear the “real” engine noise only when the plane is on the runway?

I understand that (from other answers) planes taxi using engines only. But, when I'm a passenger, then why do I hear the "real" engine noise only when the plane is on the runway? So, if planes taxi ...
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1answer
2k views

What is the maximum slope for taxiing aircraft?

Every airport I have encountered has flat runways and taxiways. Of course this is not exactly true, as some other questions picked up, and it is also possible that I just happened to visit mostly ...
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6answers
4k views

Is starting a jet engine without ground support possible?

We have had more... than... one question about jet aircraft taxiing about the airport without their jet engines running. Those address several issues such as cost vs savings and regulatory approval. ...
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6answers
2k views

Would a chain strip built in the airport taxiways, help airlines in saving money and time during taxi?

I am referring to the mechanism used in aircraft carriers, which help in catapulting fighter aircraft. What I had in mind is a milder version of the same concept. It would massively save cost, due to ...