Questions tagged [air-traffic-control]

Air Traffic Control (ATC) is a service of ground-based controllers that directs and coordinates aircraft to improve safety and efficiency.

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-4
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2answers
93 views

What happen if the glide slope beacon removed for maintenance? [closed]

it about aircraft navigation system (ILS), when the aircraft about to landing but unfortunately the glideslope beacon being removed.
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3answers
115 views

What exactly is an ATC clearance and how is it requested?

What exactly does it mean to get an ATC clearance? I’m asking the question because I read point 8015 of the Standardised European Rules of the Air (SERAs), which states that ATC clearances are ...
4
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1answer
140 views

What is the difference between a waypoint and a significant point in an airspace?

I know ATS routes are made up of waypoints, but what are Significant Points used for? Is there a difference, or are they really just two names for the same thing?
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2answers
3k views

What is typical ATC procedure when a non-pilot calls from a commercial flight for help?

"This is ShinyWings 123, I'm not a pilot, the pilot and copilot are unconscious. Help." Probably a day air traffic controllers dream of with dread, when a member of cabin crew, or even worse,...
26
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1answer
5k views

Are there any drawbacks to requesting progressive taxi every time?

Unless you know the airport like your own backyard, it seems like requesting progressive taxi would always be the safest option to essentially eliminate the possibility of taking a wrong turn or ...
1
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1answer
165 views

Why do VFR-flights need a clearance in class D airspace?

I ask myself why VFR-traffic has to get ATC-clearances in class D airspace, because as far as I know, ATC doesn’t provide separation for VFR-traffic in this airspace class... So why for example is a ...
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2answers
92 views

What purpose does a control area really serve related to managing air traffic flow?

I can understand that we have control zones at busy airports to streamline the flow of landing and departing traffic. But in Control areas of many airports i have seen that routes go straight through ...
2
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2answers
133 views

When not cleared straight in for a VOR approach, how is this type of procedure executed?

You are flying to the GDM VOR on a 097 heading. The ATC clears you for the approach, but does not specify straight in. The procedure turn is marked by the barb and specifies remaining within 10nm. My ...
-2
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1answer
132 views

Is 1,000ft vertical separation in a sparse airspace increasing risk unnecessarily? [closed]

On Saturday the 8th of August 2020 at 19:40:10 UTC, two flights flying in opposite directions, in the same corridor over India were vertically separated by just 1,000ft. The flights were SQ322 from ...
1
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1answer
84 views

What are the Radarless approach control services in the United States?

I was recently in Twin Falls, ID at KTWF. There is no radar for approach control services. All instrument approaches are full procedures and aircraft must report all requested fixes. There is Salt ...
3
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1answer
239 views

How challenging is it to land a plane on a tabletop runway?

Yesterday(August 7 2020), an Air India Express plane skidded of the runway(Dubai - Kozhikode, IN) and fell almost 30 feet below from the tabletop runway and broke into two pieces. It was also heavily ...
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2answers
259 views

Why doesn't Ketchikan, AK have a control tower?

Why doesn't Ketchikan International Airport (PAKT) in Alaska have a control tower? The special flight rules applicable to the area (14 CFR 93 Subpart M) seem to make it clear that traffic management ...
31
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4answers
4k views

What kind of assistance can another aircraft provide to an incapacitated pilot?

A recent incident unfolded as follows: An aircraft overflew the planned destination and did not respond to radio calls on any frequency. ATC decided the pilot might be incapacitated and asked another ...
4
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2answers
346 views

How do I obtain permission to fly in surface class E airspace under FAR-103?

I'm a paramotor pilot operating under FAR 103, and I'm trying to determine who I need to ask for permission to fly in class E airspace that extends to the surface and is designated for an airport. For ...
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3answers
136 views

Does aircraft/ATC get any information directly from a weather balloon?

We have been launching radiosonde (a meteorological instrument containing GPS and other sensors to measure meteorological variables attached to a balloon filled with Hydrogen) to obtain meteorological ...
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2answers
150 views

Is there a legal requirement for planes to start from the ground?

If I could somehow store a plane inside another plane, would I be allowed to start the second plane somewhere in the air? Maybe different countries have different laws for this kind of aviation? I ...
2
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1answer
157 views

What altitude restrictions are there in Class C airspace?

So if I'm flying into a Class C airspace, I call approach and I establish radio contact and tell them I want to land, then I enter the airspace. If I'm still talking to approach and haven't been ...
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2answers
95 views

Descend via STAR, after getting crossing restriction previously

The ATC issues "Cross BHAWK at FL240" initially. After few minutes, the ATC instructs "Descend Via FYTTE5 arrival". Should we comply with the crossing restriction at BHAWK, or the ...
32
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2answers
5k views

Should I contact ATC if I don't have a transponder?

The flight school I usually rent from is under the shelf of class C airspace. If you're going out to a practice area, the standard procedure is to contact approach control and get a squawk code, so ...
0
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1answer
53 views

Is there a benefit to representing a SID/STAR in 3D?

There are several examples of 2D representations of SIDs and STARs on the web. I have yet to encounter a 3D representation of one. Does one currently exist? Are there any benefits of representing a ...
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2answers
153 views

What does “Request Boxing Vectors” means?

I have heard on a request from a pilot: "- Request boxing vectors!" What's the meaning of this non standard phraseology?
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2answers
130 views

Are being +30 and having a Ph.D. considered as barriers to become an air traffic controller in NAV CANADA? [closed]

The requirements to apply to the training phase of NAV CANADA (to become an air traffic controller) are listed here, in which no upper bound corresponding to the age and the education level of a ...
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2answers
5k views

How can this kind of confusion about taxi instructions occur?

A few days ago, I (a student pilot on a solo) had landed on runway 9 for a full stop taxi back. The taxi instructions were "alpha to 27 remain on this frequency". I missed some words in between these ...
38
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2answers
13k views

Why is a Cessna C560 circling Washington DC during the protests?

Right now according to FlightRadar24 there is a Cessna C560 circling Washington DC. It took off from Manassas Regional Airport and has been circling ever since. No other identification is listed. ...
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3answers
764 views

How does ATC direct aircraft on ground from the parking to the runway?

For medium size airports, ATC will direct aircraft with a single message like this "Taxi to runway 29 via Papa, Sierra". I was wondering if it was the same thing for bigger airports (like ...
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3answers
2k views

What does “Raven” [phonetic] means when used by ATC?

What is the meaning of "Raven" [phonetic] heard in use at Reagan National Airport? Most recently heard: The ATC will say "proceed direct raven" or "direct raven maintain" whatever altitude; or "...
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2answers
203 views

How would fighter jets make contact with a previously hijacked aircraft?

For example, a plane is hijacked but civilians regain control, they know how to change the plane's frequency but no procdeures - i.e. dont know guard frequencies. There are fighter jets alongside who ...
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2answers
184 views

How to Tell Flight Following You Want to Change Your Destination?

I want to fly the LAX Coastal VFR Transition Route northbound, and I want to do the whole thing with flight following. When I get near Van Nuys airport, I'll need to tell ATC (flight following) that ...
2
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1answer
109 views

How should I make a downwind departure from a towered airport?

I'll be departing from a towered (Class D) airport, and I need to make a left downwind departure and turn right off the downwind leg to exit the pattern. I've done this with a CFI, and I've also made ...
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1answer
99 views

Where can we use conditional clearance?

Besides Line up conditional clearance in a PREPARATION FOR TAKE-OFF situation, where else can we use conditional clearance (on an apron, taxiway, etc.)?
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2answers
126 views

What are the other clearance and instructions that must be read back? [duplicate]

The following items must always be read back: ATC route clearances; clearances and instructions to enter, land on, take off from, hold short of, cross or backtrack on any runway; and runway-in-use, ...
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1answer
62 views

Transition level has to be readback and what about transition altitude? is it also required to be readback by the pilot? [closed]

These are the readback requirements, source by https://www.skybrary.aero/index.php/Read-back_or_Hear-back a) ATC route clearances; b) clearances and instructions to enter, land on, take off from, ...
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3answers
205 views

Can anybody give an example about Clearance Expiry Time?

Clearance content is included: callsign, flight path, clearance border(destination aerodrome, available report point, controlled airspace border), flight level along the route or for a specific part ...
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2answers
5k views

Do I need explicit clearance to taxi on an inactive runway?

I received taxi instructions from ground at a class D airport in the USA as follows (I was at ramp): Taxi to runway 04, Right on Bravo, left on 10, right on Alpha (no explicit clearance or hold short ...
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1answer
62 views

What is the meaning of a flashing white signalling light in Aldis Lamp?

In my source, I couldn't understand the flashing white description. I translate for you; in the last row: 'çakarlı beyaz: flashing white' says that: Leave the manoeuvering area in accordance with ...
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1answer
53 views

Help to understand a specific SNOWTAM

My questions are: According to the article ''H''; what about the other runway/runways when I want to add extra info other runway/runways too; there is just one runway in here? According to the ...
3
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2answers
256 views

Why would different crossing runways at one airport be on different radio frequencies?

In this answer the following image was included which shows that control of two crossing runways are on different radio frequencies. Source: AIP Denmark EK AD 2 - EKCH - AREA OF RESPONSIBILITY It ...
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3answers
1k views

When does ATC contact the pilot for a frequency change?

Usually, when the aircraft enters a new flight information region for example, ATC will ask the pilot to enter a new frequency. I'm curious about when they do. Is there a rule about it (in an IFR ...
16
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2answers
3k views

How do I know how to describe my position on the airport when I contact ATC?

When asking for taxi clearance, a pilot must include his location when contacting ATC. However, I'm not quite sure exactly how to state your position in the airport. For example, I've heard some ...
26
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3answers
13k views

Why is this airplane flying in circles randomly?

This G650 has been flying around for over an hour now. Is this somebody with a mechanical problem who is burning fuel before returning to their airport of origin?
5
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2answers
209 views

How are pilots prepared for a go around on a simultaneous converging approach when the “converging chart” is not published?

Source: adsbexchange.com Today I learned that at KPHL (Philadelphia) simultaneous converging approaches are used. (Note that AAL is faster, which narrowed down the time gap by the time it landed.) ...
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1answer
245 views

Are old illegal air transfer methods still feasible today? [closed]

A retired soldier told me he used to know people who smuggled jewelries, hard drugs, guns and even people from middle eastern countries to Europe, specifically, Germany! Via planes! In fact, he said ...
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1answer
156 views

Why can’t a single-fan-beam radar determine the elevation angles of its primary targets?

A while back, I asked about the reason for one of the well-known limitations of most ATC primary radars (their inability to determine target altitudes).1 The answers boiled down to “single-beam fan-...
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2answers
269 views

How do people smuggle stuff with private airplanes? [closed]

I get it, the question seems as if I'm reaching out for answers from experienced smugglers! But no. As a matter of fact, I'm trying to get answers on air surveillance & security. Love it or hate ...
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1answer
723 views

Can one ARTCC take over for another ARTCC in an emergency?

Earlier today the ZNY ARTCC was shut down due to COVID-19. This resulted in a temporary ground stop for incoming flights while a contingency plan was being activated. When certain sectors within an ...
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2answers
317 views

Will there be dynamic or variable separation minima in future?

In the future, is it possible to apply in the same airspace different separations between pairs of aircraft? Depending on the relative speed, navigation capacity of the aircraft, intersection geometry,...
7
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1answer
129 views

What is the status of a bravo airspace when the associated TRACON is evacuated?

On 18 March 2020, an earthquake struck just south of KSLC, causing an evacuation of the control tower and TRACON facilities. The airport was closed. Later in the day, I found myself unable to ...
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0answers
54 views

How to find out how many aircraft depart/land from a country per day?

I am trying to get the following information. I would like to know for each day how many aircraft have taken off and departed from a specific country. This information should be up to date and ...
0
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1answer
182 views

What is the 'Downstream Clearance?'

Downstream clearance means a clearance issued to an aircraft by an air traffic control unit that is not the current controlling authority of that aircraft; but I don't get it so well. Thanks in ...
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4answers
2k views

What does the flashing green-light signal (return for landing) actually mean to NORDO aircraft?

Studying for the PSTAR I see that a flashing green signal while in the circuit means "return for landing" but this is not actually defined anywhere. What does that mean? NORDO = "is an aircraft ...

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