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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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How is separation ensured after a go-around due to a busy runway

In watching aviation / ATC videos, I've often seen situations like the following: airplane A is coming in to land, but airplane B is already on the same runway trying to take off. Either it's slow ...
EugeneO's user avatar
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6 votes
1 answer
2k views

Are hot air balloons regulated by ATC or can they fly without reporting to ATC?

My question is: are hot air balloons required to report to ATC or are they allowed to fly on their own without reporting to ATC? I know that all commercial aircraft, no matter the size, must cooperate ...
Aircraft Enthusiast 007's user avatar
2 votes
1 answer
233 views

Class Echo Control Tower Procedures

Northern Colorado Regional Airport (KFNL) resides within a surface echo. This airport, however, has an operating control tower. When VFR in echo airspace, ATC services are provided but not mandatory. ...
Michael Dauphinee's user avatar
0 votes
1 answer
55 views

what is "short range clearance procedure" like?

in my oral exam guid book it says "a traffic clearance issued prior to departure will normally authorize flight to the airport of intended landing. Under certain conditions, at some locations, a ...
Shin O's user avatar
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3 votes
1 answer
105 views

Missing position (lat/lon) in ADSB data

I would like to ask if anyone has encountered latitude longitude (Data Item 021/130) missing in ADSB data, specifically in asterix cat 21. In addition to the mandador entries, there is also geometric ...
adam beno's user avatar
0 votes
1 answer
100 views

Do you have to repeat back ATC taxi instructions while still on the runway [duplicate]

Upon touching down while still rolling, tower gives us taxi instructions back to parking. I understand the need to give instructions on where to exit the runway but I’m wondering if the FULL taxi ...
Emma141822's user avatar
1 vote
1 answer
62 views

SERA.8012 and ATS.TR.220 Wake Turbulence Separation application

I need small clarification on current European documents SERA and Part-ATS. Based on SERA.8012(a): (a) Air traffic control units shall apply wake turbulence separation minima to aircraft in the ...
Bohdan Bessonov's user avatar
1 vote
0 answers
26 views

Is QNET 2.0 VTOL Board Underactuated or Fully Actuated?

I'm working on a VTOL aircraft model, but the apparatus available in our lab is the QNET 2.0 VTOL Board. The help I need is to confirm whether the VTOL Board is underactuated or fully actuated. As you ...
xerox's user avatar
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0 votes
2 answers
109 views

How do you communicate with atc and how can they communicate with you when you change frequency?

How do you let atc know that you are going to a different frequency and how will you be able to talk to them if they need to talk to you will they go to that frequency that you went to?
User9993454's user avatar
6 votes
2 answers
204 views

When ATC tells you to climb or descent now, do the speed restrictions on SIDs and STARs still apply? (EASA)

I am flying the ELSUP 1H departure. After taking off, I get told to climb to FL100. Do I have to comply with the speed restrictions? Is it the same for a STAR?
standel's user avatar
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ADS-L Protocol implementation

I am trying to implement the ADS-L protocol in my application, but I did not fully understand it yet. Data link layer (page 13): Why CRC is at offset (Packet Length +1)Bytes if the CRC is included in ...
Murmi's user avatar
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1 vote
1 answer
239 views

What is the squawk for VFR flying?

I'm used to using squawk 7000 for VFR flight. But lately I've seen 1200 also being used. I don't know which one is the default for VFR flying, because it seems like both codes are widely used.
OnyxWingman's user avatar
2 votes
1 answer
115 views

DFW International airport air traffic control

While listening to DFW air traffic control I hear pilots referring to Inwood and g bush when approaching the airport. What are these?
Mark Miller's user avatar
8 votes
2 answers
5k views

Can a pilot tell a controller they don't need IFR clearance?

A pilot requests a zone transit. The controller asks if they can accept IFR clearance, they cannot, due to lack of a rating or equipment. But the weather doesn't require IFR, i.e. visibility is 10km+ ...
Cloud's user avatar
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1 vote
1 answer
84 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 ...
Lê Minh Hoàng's user avatar
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 ...
user16790133's user avatar
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),...
Purple P's user avatar
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6 votes
1 answer
345 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 ...
user95861's user avatar
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. ...
iop0453's user avatar
  • 175
7 votes
1 answer
203 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" ...
iaexo's user avatar
  • 331
0 votes
1 answer
136 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 (...
Gabe's user avatar
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1 vote
2 answers
140 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 ...
Travis Brestelli's user avatar
4 votes
2 answers
374 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 ...
Dev's user avatar
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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 ...
user's user avatar
  • 398
2 votes
1 answer
145 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 ...
Lnafziger's user avatar
  • 59k
1 vote
2 answers
244 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) ...
A R's user avatar
  • 11
4 votes
1 answer
323 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 ...
Herbert sandla 's user avatar
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)...
Pearl6527's user avatar
  • 373
0 votes
1 answer
236 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 ...
Pearl6527's user avatar
  • 373
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 ...
ljwobker's user avatar
  • 1,297
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 ...
Cloud's user avatar
  • 13.6k
2 votes
4 answers
974 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 ...
Gabe's user avatar
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2 votes
2 answers
184 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 ...
tedioustortoise's user avatar
0 votes
1 answer
137 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 ...
Pearl6527's user avatar
  • 373
0 votes
1 answer
169 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 ...
Pearl6527's user avatar
  • 373
0 votes
2 answers
146 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 "...
Pearl6527's user avatar
  • 373
5 votes
2 answers
216 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 ...
lxgr's user avatar
  • 261
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 ...
quiet flyer's user avatar
  • 22.8k
3 votes
1 answer
669 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 ...
Francis L.'s user avatar
  • 2,514
4 votes
2 answers
316 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, ...
Michael Hall's user avatar
5 votes
2 answers
195 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 ...
pedrouan's user avatar
  • 151
2 votes
1 answer
229 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 ...
ilayda's user avatar
  • 59
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 ...
Name's user avatar
  • 934
1 vote
2 answers
510 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 ...
user38116's user avatar
  • 595
3 votes
1 answer
201 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?
Luna Jung's user avatar
0 votes
2 answers
204 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 ...
demonguy's user avatar
  • 355
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 ...
Quant_in_becoming's user avatar
1 vote
1 answer
79 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 ...
Vignesh V's user avatar
-1 votes
1 answer
70 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 ...
Vignesh V's user avatar
1 vote
1 answer
122 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 ...
HelloWorld7894's user avatar

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