Skip to main content

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.

Filter by
Sorted by
Tagged with
10 votes
1 answer
1k views

Are interlocked "traffic signals" possible/in use for taxiing?

I am a frequent viewer of the Youtube channel VASAviation which shows various interesting incidents regarding ATC. Recently there were two similar videos (first and second) where ATC directed a plane ...
1 vote
1 answer
60 views

Separation between aircraft changing flight level and aircraft flying on the same track at that flight level

I've read in "Optimization of aircraft trajectories over the North Atlantic Airspace" and saw that in the separation standards, the longitudinal separation when changing the flight level is ...
11 votes
3 answers
6k views

Why don't airports use different radio frequencies/channels for each plane to prevent communications from interfering with each other?

There have been serious safety incidents where multiple airplanes using the same frequency caused simultaneous messages to garble each other. For example, at Pearson International Airport (2020-03-07),...
2 votes
4 answers
931 views

Why are we still using audio to communicate between ATC and Pilot?

Amidst the recent Japan Airlines 516 crash at Haneda and multiple others in history like the famous KLM/PanAm at Tenerife, it has always bothered me that these accidents were so easily preventable ...
5 votes
0 answers
196 views

"Air Force One" outside of US airspace

Does the USAF aircraft carrying POTUS use the call sign "Air Force One" when in other countries' airspace? I could see some countries getting a bit miffed, seeing as they have their own air ...
4 votes
2 answers
307 views

Aircraft continuously circling before landing (not holding)

On Flightradar24 I saw an Airbus 320 circling a lot before landing. My best guess is for some reason the aircraft had to stay in air for longer time due to unknown reasons. If this is the case, why ...
6 votes
2 answers
1k views

Can ATC assign speed adjustment to aircraft on final approach course?

According to FAA Order 7110.65AA, 5−7−1.b. Do not assign speed adjustment to aircraft: 4. Inside the final approach fix on final or a point 5 miles from the runway, whichever is closer to the runway. ...
7 votes
1 answer
171 views

Where does FlightAware obtain the filed flight plans under the "Flight Data" section?

Visit the FlightAware page for a random flight, say https://www.flightaware.com/live/flight/QFA570 Now under the "Flight Data" section, sometimes we'll see an entry called "Route" ...
4 votes
1 answer
250 views

Why does ATC in the US say "heavy" after callsigns but usually not in Europe?

In the United States, you'll often hear the word "heavy" after call signs used for wide-body planes over the radio during air traffic control (ATC) communications. However, in Europe, this ...
11 votes
3 answers
1k views

ATC Phraseology “fly heading” vs “turn [direction] heading”

This may be a UK/CAA phraseology quirk, but I’ve heard controllers use the phrase “fly heading 090” and “turn right/left, heading 090” seemingly interchangeably. When would a controller use each ...
0 votes
1 answer
122 views

Should ATC have souls, fuel, and cargo info before the emergency?

We know how stressful and how fast a situation can become fatal. One of the things that bothers me is when a pilot declares an emergency and I hear ATC asking information they should have already (...
1 vote
2 answers
135 views

Frontier Flight 1929 3/21/24 DIVERTED - HELP FIND ATC RECORDING

My family was on frontier flight 1929 on 3/21/24 from PWM. It was diverted back to PWM within minutes of take off. I am trying to find the ATC recording for the reason why it was diverted. Can anyone ...
22 votes
5 answers
7k views

Is it acceptable to abbreviate “Foxtrot” to “Fox”?

My instrument instructor pointed out that I’ve been saying “Four Seven Fox” instead of “Four Seven Foxtrot”. I realize I’ve been doing this for years now, but this is the first I’ve ever been called ...
2 votes
1 answer
125 views

Do departure procedure speed restrictions override airspace speed restrictions?

This is a speed restriction found on the BNGOS 3 RNAV Departure Procedure out of KOPF: SPEED: ACCELERATE TO 250 KT, IF UNABLE, ADVISE ATC Opa Locka airport is Class D and is also below the Miami ...
4 votes
1 answer
141 views

How are international departure clearances issued from an air traffic flow management perspective?

Recently, there was an incident involving a Lufthansa A350 flying to SFO which had to divert to OAK due to (at least what seems to me like) poor traffic management. In a nutshell, the approach ...
10 votes
3 answers
1k views

Hear-back/Read-back errors: ATC or Pilot responsibility [duplicate]

Assume ATC issues a clearance or instruction such as: "N123 turn right heading two two zero, vectors for the visual approach to runway 4, descend and maintain eight thousand" and the pilot ...
-8 votes
4 answers
3k views

What is the maximum speed of the Cessna Citation X?

What is the maximum speed of the Cessna Citation X? I want to attempt to break the sound barrier but I do not know if its possible, where, or how to do it.
1 vote
2 answers
164 views

How impactful could an ATC-specific speech-to-text AI model be for the aviation industry?

Various initiatives, such as the European SESAR 3 program, the Airbus Speech Recognition Challenge, or Appareo's technology, highlight a growing interest in tailored Automatic Speech Recognition (ASR) ...
9 votes
3 answers
3k views

When can a taxi clearance allow me to cross multiple runways?

I was just reading the FAA instrument procedures handbook and saw the paragraph below in Chapter 1. I'm puzzled by this, because I routinely get "Cross runways XX right and XX left on Alpha" ...
3 votes
3 answers
47k views

Do ATC say "Climb to XXXX on standard" or "Climb to standard XXXX" or something else?

Do ATC say "Climb to XXXX on standard" or "Climb to standard XXXX" or something else? By "standard" I'm referring to altimeter pressure settings (set to standard pressure)...
0 votes
1 answer
231 views

How do these lines sound as ATC communications?

These are translated lines from a fictional story in Chinese, written by someone who (like me) does not work in aviation and therefore does not have firsthand knowledge of these things. Therefore, it ...
17 votes
2 answers
2k views

who determines and at what point how a (larger) airport is configured for operations for the day?

This question is mostly in the context of commercial / scheduled as opposed to GA or other traffic. It's pretty apparent that "turning around" an airport in the sense of which runways are ...
26 votes
2 answers
11k views

Should I telephone tower to tell them I'm alive?

Yesterday I had a somewhat stressful flight out of a busy airport back to my local airfield. After take-off the navigation "equipment" (a tablet) failed, the controller asked me for my ...
1 vote
2 answers
434 views

Can I share ACARS messages online?

ACARS messages are transmitted via radio just like normal ATC communications are. In the UK, for example, it is illegal to listen to and broadcast ATC chatter. Does the same apply to ACARS? If an ...
2 votes
2 answers
172 views

Origins and Efficiency of the Phonetic Alphabet in Aviation

I’m curious about the history and practicality of the phonetic alphabet (Alpha, Bravo, Charlie, Delta, Echo, etc.) used in aviation communication. While I recognise its universal application in ...
0 votes
1 answer
133 views

How might ATC phrase an instruction to a pilot to maintain a certain speed and establish glide path?

What might an ATC say to instruct a pilot to maintain a certain speed and establish glide path? My attempts (as someone who does not know much at all about how a plane is piloted) are: "Maintain ...
0 votes
1 answer
151 views

How might an ATC ask a pilot to check the weather conditions at a certain location?

(Working on a translation that involves radio communications dialogue.) Say the location is X nautical miles from the aircraft to a direction that's between the Y o'clock and Z o'clock direction, what ...
0 votes
2 answers
138 views

What might an air traffic controller say to approve a request from a pilot for a certain heading?

I'm translating something that involves radio communications dialogue. Two questions, actually: How would a pilot request a particular heading? (Does this ever happen?) E.g. something like "...
4 votes
3 answers
3k views

Do civilian aircraft transiting through controlled airspace designated for military airports typically talk to the tower of that airport? (USA)

The general point of this question is to understand how civilian aircraft operate around controlled airspace designated for military airports, in terms of communications, in the US. I think the best ...
3 votes
1 answer
566 views

What rules for guiding air traffic should I learn for the FEAST II radar test?

I recently passed FEAST I exams to become an air traffic controller. Next round of tests is a FEAST II radar test. What general rules used for air traffic guidance should I learn in order to be ...
4 votes
2 answers
272 views

What is the difference between VFR and IFR in class G airspace?

What is the difference, and how would an outsider discern, whether a flight was conducted under Visual Flight Rules or Instrument Flight Rules in class G airspace? (United States, FAA jurisdiction, ...
5 votes
2 answers
184 views

What determines the name of the runway if it is not active (for atc instructions)

I was not succesful with finding an answer to this anywhere on the web. Let’s assume we have multiple runways in the airport and ATC controller gives us instructions to cross certain runway that is ...
2 votes
1 answer
220 views

Localizer beam protection

During mixed operation, will an aircraft crossing the end of the runway affect the localizer transmission? (Istanbul airport, source.) For instance, when runway 17L is in use, will an aircraft ...
76 votes
4 answers
98k views

Why do English-speaking pilots and ATC say "Niner" instead of "Nine"?

Besides the fact that it's now a standard, why do American-English-speaking pilots and ATC say "Niner" instead of "Nine"? None of the other numerals are pronounced in an atypical fashion. For what ...
3 votes
1 answer
719 views

What frequencies are used to transmit ADS-B messages?

Presently, ADS-B messages are broadcast on 1090 Mhz Mode S Extended Squitter VHF Data Link Mode-4 (VDL-4) Universal Access Transceiver (UAT) 978 Mhz First 2 Frequencies have relevant ICAO standards ...
8 votes
2 answers
2k views

Mandatory Reports to ATC on an Approach

An instructor recently told me a required radio call to ATC is to tell them when you are established on course on final approach. His point was that this tells ATC when to switch you to tower. While I ...
3 votes
1 answer
161 views

What is the specification of control cap (control tower) glass in FAA?

Does anyone know where I can find the specification of glass for control tower?
0 votes
2 answers
201 views

What approach method does tower possible to give me?

I'm a student pilot. ATC is a difficult part for me. So far when I fly cross-country, the only VFR approach I hear from ATC is "straight to runway XX". Is there any other approach the ATC ...
10 votes
3 answers
4k views

Why might a flight have the same departure airport as its destination?

I am not very familiar with the world of air traffic. Recently I have been granted access to OpenSky Network. As I am trying to understand the "flight" dataset, I have come across a few ...
1 vote
1 answer
74 views

How to calculate the amount of differential cable delay between a four port directional antenna and a single port Omni directional antenna in TCAS II?

I want to select the amount of differential cable delay between the top (4-port directional) antenna and the bottom (1-port Omni-directional) antenna in the TCAS II RBP-7G connector pin. In the ACSS ...
-1 votes
1 answer
69 views

How to calculate the Traffic Advisory (TA) range limit above the maximum altitude limit (take 16000 ft) of an aircraft?

Let us consider an aircraft(A) with 16000 ft maximum altitude limit. Above which it cannot achieve 0.25 G vertical acceleration with 1500 FPM. Now, my question is if there is an aircraft(B) flying in ...
1 vote
1 answer
114 views

Is there any top document for ATC glossary?

I have been searching for some official documents that have all ATC phrases, because I wanted to refresh some of the phrases for ATC, but I was not able to find any other than: Eurocontrol ...
1 vote
1 answer
163 views

How Can I Know If An Airport/ Airfield Is Equipped To Operate During A Power Outage

My buddy was asked this by an IP. Is there a way to see in any publication that an airport is equipped to operate during a power outage? Or a way to see if a airfield has backup power?
0 votes
3 answers
250 views

Landing without explicit permission

What will happen if civilian ATC suddenly sees unknown plane which request landing due to emergency. Can ATC just forbid such land? If yes, what they do? What if it's foreign military plane?
4 votes
2 answers
200 views

Are matching/duplicate marker names on a flight plan errors and/or occurrences most systems deal with?

It is reported that Nats, formerly known as National Air Traffic Services in the UK, has explained the recent national delays on matching marker names on a flight plan: In its initial report ...
5 votes
2 answers
943 views

Can Transition Altitude (TA) and Transition Level (TL) be equal?

In Europe, is it possible that Transition Altitude and Transition Level are equal, that is, TA=8000 ft and TL=FL080? In that scenario, at 8000 feet, what pressure (QNH or QNE) should be set in the ...
0 votes
1 answer
196 views

Cleared straight in approach

I was flying IFR (in a simulator with Vatsim ATC) cleared direct to ROXXE on the RNAV 04 at KAVP at 4000 on a course of 275. The controller said "Cross ROXXE at or above 4000, cleared straight in ...
23 votes
9 answers
7k views

Can you tell ATC you are a "student pilot" when you are not?

Many pilots who are not native English speakers have a hard time when they start flying in the U.S. because of the pace and sometimes elaborate instructions given to pilots by controllers. The advice ...
1 vote
1 answer
175 views

Can I identify as a student pilot when I'm not? [duplicate]

A few months ago, my original flying instructor took me to a busy airport (Gloucester) as I wasn't comfortable going there by myself for the first time as a low-hours pilot who only really uses grass ...
30 votes
1 answer
7k views

Why would a pilot request that ATC dim the runway lights?

In this clip, the pilot requests dimmed runway lights. Tower, you able to reduce the runway lights, please? [Tower dims runway lights] Thank you much This seems like ...

1
2 3 4 5
24