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Questions tagged [taxiing]

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

25
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4answers
6k views

Why are thrust reversers not used to slow down to taxi speeds?

In reading this question (Would more throttle when using reverse thrust reduce stopping distance?), it prompted me to remember that on many of my flights (typically on 737s or CRJ type aircraft), it ...
2
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1answer
110 views

How to correctly interpret the taxi procedures in ICAO Doc 4444?

I have a question to ICAO Doc4444, Chapter 12.3.4.7, Taxi procedures for departure, c). My question is how to interpret the following, knowing that words in parentheses are mandatory, and words in ...
2
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1answer
167 views

What causes the nose landing gear knocking noise on a Boeing 777 while taxiing?

The NLG knocking noise heard on taxi-in to stand, what could cause this knocking noise?
4
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0answers
175 views

NOTAM - What means “no shoulders along taxiways” in German?

can anyone explain to me what "no shoulders along taxiways" means? I know what shoulder markings are, but I don't know how to translate them. Are there German people? :) Thank you!
17
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2answers
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?
18
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2answers
3k views

Why is aircraft marshalling still necessary?

I've seen in a documentary that many airports have people guiding the airplanes to the parking spots (marshals). I've also noticed that the key point is to reach a precise spot on which the nose ...
0
votes
3answers
163 views

How to achieve shorter taxiing time by elongating the airfield

What about doubling the length of airfields in order to shorten the time it takes for a plane to roll on the ground after landing and before takeoff. The plane could take off from the middle of the ...
15
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2answers
1k 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 ...
6
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2answers
480 views

Why are “Follow Me” cars painted yellow and black?

Why are "Follow Me" cars painted black and yellow, and use square shapes in their design?
1
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1answer
274 views

How do aircraft follow the tarmac lines while taxiing? [duplicate]

How does the pilot determine he is on the yellow taxi line at all times, since he doesn't have a direct view to the ground below? I am sure there must be some equipment, but I just don't know what.
8
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2answers
986 views

How does an airplane move itself in the runway? [duplicate]

Basically do they move themselves using their powerful jet/propeller engines to propel themselves forward or do they just use an engine that powers the wheels used for landing? I'm not really asking ...
17
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2answers
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 ...
5
votes
1answer
291 views

Why are follow-me cars used in Gran Canaria Airport in good visibility for incoming aircraft?

I've been at GCLP (Las Palmas de Gran Canaria, Spain) a few weeks ago. I've observed that all incoming traffic was guided by a Follow Me while outgoing traffic went without one. I was curious about ...
0
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2answers
489 views

Where in the FAR or AIM is a high speed taxi defined?

While monitoring coms I recently heard a Cessna Centurion that had just cleared the runway request a "high speed taxi", which was approved by the tower. I'm assuming that means he wants to taxi at a ...
4
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2answers
494 views

Why don't pushback tugs take the aircraft to the runway? [duplicate]

As we know aircrafts have to turn on their engines to taxi the entire way to the runway, if pushback tugs are used, it would save a lot of ATF and overall costs. Is there any specific regulation by ...
13
votes
1answer
257 views

Does the “follow” instruction give an aircraft clearance to turn onto a taxiway and/or cross a runway?

Consider this ATC instruction from a ground controller: N123, continue down Alpha, turn right at Kilo, hold short of RWY36. N456, follow N123. Does this instruction mean N456 can turn right ...
18
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2answers
2k views

What are the most challenging taxi manoeuvres that a typical commercial airline pilot must execute?

I am currently involved in a University level modelling excercise which looks to investigate the handling qualities of a novel nose wheel steering system. As part of this study, I am interested in ...
5
votes
1answer
199 views

Any FAA or other regulations prohibiting taxiing between parked aircraft?

So the other day I was getting checked out at a local FBO, after returning to the ramp, instructor told me to taxi between two parked (tied-down aircraft). It was a tight squeeze but I taxied at about ...
15
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1answer
2k views

Are there any aircraft with powered landing gear?

My student asked me a question this morning. It was: A car drives by turning its wheels against the Earth. An airplane taxis by rolling on its wheels while the engines push against the air. Are ...
7
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2answers
889 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 ...
6
votes
2answers
286 views

How should you coordinate with traffic at non-towered airports?

I am a fairly new pilot. I recently flew to a non-towered airport in Quebec, Canada (Lachute, CSE4). There is a significant displaced threshold on each end of the runway. The airport has one taxiway ...
1
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0answers
40 views

What is the permissible deviation for a pilot to stop the aircraft when guided by AVDGS?

As per ICAO Annex 14, table 5-4, the permissible deviation for AVDGS is 500mm at stop position, which is the design requirement for AVDGS unit. I would like to know what is the permissible deviation ...
5
votes
1answer
239 views

Is taxiing a small aircraft on a residential street legal?

I live with the back of my house to a Runway that runs north to south almost perfectly. I live on the west side of the runway, Across the street from me on the further west most side of the road ...
2
votes
1answer
206 views

Are helicopters expected to follow the lateral guidance of taxiways in a hover taxi or air taxi?

If a helicopter is asked by ATC to hover taxi or air taxi, are they still expected to follow the lateral guidance of taxiways on the ground, or do they proceed "as the crow flies", direct to their ...
3
votes
3answers
303 views

Why is there no instrument taxi system for low-visibility operations?

In one of the comments on this answer regarding ILS category IIIc operations (or, rather, the lack thereof), it's mentioned that There is no [radio] guidance for taxiing except the pilot's vision. ...
4
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3answers
703 views

Why is it 'aileron right and elevator up' with a front-right wind in a tailwheel airplane?

Question: How should the flight controls be held while taxiing a tailwheel airplane into a right quartering headwind? Answer: When taxiing a tailwheel airplane into a right quartering headwind, use ...
5
votes
1answer
305 views

Is it permitted to deviate from yellow lines, during taxi?

During taxi procedures, the pilot should follow the yellow lines, to avoid a collision with any obstacle or even with another aircraft. Is the any situation, which the pilot can deviate from the ...
3
votes
2answers
241 views

Why do light taildraggers swirl uncontrollably on runways in a simulator? [duplicate]

When a pilot chooses to run at a speed way above its takeoff speed on the runway in a simulator without taking off, the plane begins to skid and spins 360 uncontrollably around the yaw axis, what is ...
6
votes
1answer
1k views

What is the proper technique for using rudder pedals with toe brakes?

I just had my first flight lesson the other day and I had some issues with using the rudder pedals and toe brakes for taxiing. For example, how do you steer and brake at the same time when making ...
-1
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4answers
670 views

Why would an aircraft do multiple runway laps before takeoff?

During a recent Ryanair, Boeing 737 flight, the aircraft went up and down the runway several times before takeoff, whilst modifying the flaps. Why would this have been? Usually, I thought flaps and ...
2
votes
2answers
873 views

Are taxiing aircraft to hold short of taxiway hold short markings if not instructed by ATC to do so?

At some airports, some taxiways have taxiway hold short markings (single dashed yellow lines against a black background). Do taxiing aircraft by default need to hold short of these markings if they're ...
1
vote
1answer
179 views

SFO Taxiway Marking Meanings

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 ...
-5
votes
1answer
339 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 ...
2
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1answer
350 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?
2
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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 ...
10
votes
1answer
570 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/...
7
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3answers
2k views

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 ...
12
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5answers
4k 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
517 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 ...
12
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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 ...
11
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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 ...
3
votes
1answer
363 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?
3
votes
1answer
248 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?
4
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1answer
2k 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.
5
votes
1answer
261 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 ...
6
votes
1answer
188 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 ...
28
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2answers
5k views

How do tugs push back the Antonov 225?

How do tugs push back aircraft with 2 nose gears such as the Antonov 225?
33
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4answers
4k 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 ...
5
votes
4answers
1k 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 ...
5
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1answer
615 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 ...