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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3
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2answers
110 views

Does accepting a VFR Descent cancel IFR?

After flying on an IFR clearance through a line of Thunderstorms, ATC provided me the option of a "VFR descent at own discretion". After descending and with the field in sight I requested to ...
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3answers
2k views

What, exactly, is a final controller?

This http://www.xavius.com/ordapp.html tutorial mentions the user work song as a final controller for two runways and says that during busy periods one controller would work each runway. I’ve never ...
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3answers
376 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 ...
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5answers
4k views

Does ATC hear the same poor audio I hear on LiveATC?

When listening to air traffic control (ATC) communications on something like LiveATC there is a lot of feedback/static that often makes it difficult to hear. Do controllers hear the same feedback and ...
3
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3answers
240 views

Can I request a visual approach before I have the field in sight?

I was on an IFR flight plan in VMC. The ATC asked me what approach I wanted, and I said visual approach. He said expect RNAV approach instead without saying why. I wonder if it's okay to ask for ...
8
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1answer
584 views

Why would holding instructions be sent as an ACARS message?

I was browsing ACARS messages listed on an aviation enthusiast website in Greece (similar to FR24 and others), and noticed a message sent to UA124, a 767 from KEWR to LGAV: The SAT VOR is located at (...
3
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3answers
996 views

At what altitude do pilots usually switch to departure?

I contribute to an open-source ATC sim, and I'm looking to advance one of our current features. I know this is widely variable, but is there a typical example, either in distance from the airport, or ...
14
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2answers
3k views

Are Belarusian ATC recordings available for Ryanair Flight 4978? [closed]

I am interested in locating the ATC recordings of Ryanair Flight FR4978, LGAV to EYVI, 23/5/2021, that had a forced diversion to UMMS in order to arrest a passenger. I have looked online but couldn't ...
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2answers
180 views

Vector to final on RNAV approach with the Intermediate and final segments are not aligned

Consider the RNAV 30 approach to C83 (Byron, CA), On a recent training flight requesting vectors for the approach, ATC pointed us to the MOVDD IF before cutting us loose (informing us that we would ...
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1answer
92 views

What is “ACO transition”?

In MSFS2020, I frequently hear terms like "Cleared to ACO transition" and I can set an ACO in my flight plan. What exactly is an ACO and its obviously not a unique point because they seem ...
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2answers
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How does a U.S. military air traffic controller become a civilian air traffic controller?

If a person is working as a United States military air traffic controller and then they get discharged, do they have to go through additional training and tests to work as a United States civilian air ...
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2answers
2k views

Can a pilot amend a flight plan in-flight?

Which information pilot can change in-flight? For example: Altitude. Ask to climb higher? V to Z. VFR rules to IFR (VFR to IFR)?
13
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3answers
7k views

Why are cockpit alarms still so distracting and unable to be silenced?

I'm watching video RV 10 N783V My 1st Emergency At 8:45 a stall alarm goes off and is a horrible piercing whistle. Why? Surely the pilot has enough distractions without also being deafened while ...
8
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3answers
1k views

What kind of tools are available to an ATC handling traffic in the terminal airspace to predict aircraft trajectories?

I know that the ATC has feedback on the current position of the aircraft via Radar and ADS-B data. However, are there any tools to forecast future trajectories. For example, say an aircraft is ...
4
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2answers
468 views

What is “Weather and Chaff” information provided to pilots by ATC?

This one appears in an entry under "Additional Services" in the FAA Pilot/Controller Glossary and claims that ATC provides a wide range of additional services to pilots, including "...
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3answers
3k views

How realistic is atc-sim.com as an ATC simulator?

I was wondering how realistic https://atc-sim.com/ is. I only play for fun, not for training, but I want to play as accurately as possible.
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1answer
233 views

Why didn’t AFR4590 use heavy in its call sign?

https://aviation-safety.net/investigation/cvr/transcripts/cvr_af4590.php shows that AFR4590 didn’t use heavy in its call sign even though Concorde had a MTOW greater than 300,000 lbs. Unlike BAW, AFR ...
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4answers
350 views

How do you request a 3D block of airspace to to freely maneuver your privately owned military jet?

Referring to this How can you fly your own military jet in terms of altitude and acrobatics? how can you request a block of airspace to freely maneuver your private military jet (barrel rolls, ...
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3answers
183 views

In the US, are there any operational control towers located in surface-level Class E airspace or in Class G airspace?

(This question pertains to the airspace of the United States.) FAR 91.126 gives some general rules for operating at or near airports in Class G airspace, and FAR 91.127 gives some general rules for ...
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3answers
118 views

Are mode C altitude returns valid for aircraft separation?

According to FAA JO 7110.65 5-12-8 'Validation of MODE C READOUT', Mode C is valid if there is less than 300 feet deviation from the pilot reported altitude. If ATC instruct 'A' aircraft to maintain 5,...
2
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1answer
303 views

How do you figure out which frequency to contact approach on for a class bravo transition?

I'm about 20 hours into my PPL, so maybe I just haven't gotten to this part yet. Suppose I'm flying KFCM to KRNH and I want to request clearance across the bravo. How do I figure out which approach ...
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2answers
2k views

If an airliner turns back midway, how is the route planned?

There's several incidents of "flights to nowhere", e.g. https://onemileatatime.com/klm-787-nine-hour-flight-to-nowhere/ After a pilot decides to turn back, how is this handled from a routing/...
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1answer
174 views

How does ATC handle a controller with psychological trauma?

I've finally got around to watching Breaking Bad, (spoiler alert) in the last episode of season 2 a bereaved ATC controller accidentally causes a mid-air collision. I am not asking whether the actual ...
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4answers
160 views

Can you receive traffic advisories without a specific destination or intention?

I’m wondering if it is possible to call up the local approach facility and ask them for flight following even if you are just doing sightseeing or something. Do you need to tell them your intended ...
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1answer
181 views

Can simultaneous departures be authorized from converging airports?

I am an ATC'r stationed overseas where we service two military airfields. The runways are 3 miles apart but converge. Our current regulations require aircraft from one airfield to delay in takeoff ...
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4answers
126 views

Can “Center” provide VFR flight following?

Whenever I've requested VFR flight following, I've always requested it from So Cal Approach/Departure because I'm usually flying within their reach. If I'm flying outside the reach of So Cal Approach ...
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2answers
245 views

What is an Air-Filed Flight Plan? Are aircraft capable of filing flight plan when in flight?

ICAO Doc 4444 mentions to input AFIL in the departure field of flight plan if it has been filed in the air. What is an Air-Filed flight plan? Can aircraft crew file a flight plan in-flight? If yes ...
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2answers
3k views

How can ATC distinguish planes that are stacked up in a holding pattern from each other?

If I understand holding patterns correctly, several planes stack up vertically, each circulating at its assigned altitude until given permission to exit the pattern and enter an approach for landing. ...
3
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2answers
521 views

What are the meanings of these terms used in ATC ground communications?

Regarding ATC ground communications, what/who are the following callees? Are these aircraft, or vehicles, or people? [Airline name] maintenance [Airline name] tug [Airline name] mechanic
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1answer
80 views

Why should lower limit of a Control Area (above 3000 ft) coincide with a VFR cruising level?

In ICAO Annex 11 it is recommended: When the lower limit of a Control Area is above 900 m (3000 ft) MSL it should coincide with a VFR cruising level Why should it coincide with a VFR cruising level?
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2answers
6k views

How do airplanes maintain separation over large bodies of water? [duplicate]

I have read that the oceans are big enough that ground radar stations only reach so far out. I assume that means after a certain distance from the coast they leave ATC services. Do airplanes employ ...
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2answers
217 views

Flight Following into Class C Airport where I'm Landing

I want to fly into a Class C airport and do a full stop taxi back. I'll be approaching the airport with flight following. When ATC hands me off to approach control for the airport I'll be landing at,...
2
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1answer
124 views

Which air traffic controller is responsible for a taxiway between parallel runways?

When an airport use two runways that are parallel at the same time, my question is which tower controller owns the "ground space" between the runways?
9
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6answers
548 views

If I'm cleared to land without any specific instructions on how to enter the pattern, what should I do?

I learned at an uncontrolled airport. I thought I had controlled communications down pretty well, but I upset the tower controller today. Situation: I was coming from the southeast, and tower told me “...
4
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2answers
227 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 ...
5
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1answer
132 views

Does the flight always switch to TRACON on a go-around in class B airspace?

I have been listening to class B go-around ATC recordings. After the initial climb of the go-around, the tower gives the flight a heading and altitude. Then, on some recordings I hear the tower say &...
2
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1answer
179 views

What is the difference between SoCal Approach, SoCal Departure and SoCal TRACON?

I've heard these 3 terms in ATC recordings and on web pages. Do they all use the same frequencies and the same controllers?
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1answer
185 views

Is this free flight data really correct? [closed]

In recent years, I'm being terrorized by airplanes flying over here all the time at low height. For this reason, I'm trying to set up a little notification system to see if these are actually "...
0
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1answer
73 views

How to pass ATPL as an ATC? [closed]

i have graduated from Nation Aviation Academy and my occupation is Air Traffic Control. But to become a pilot was my childhood dream. So my question is, is it possible to pass atpl exams in this ...
8
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3answers
2k views

Flight Levels shall be transmitted by pronouncing each digit separately. And how should be FL200 transmitted?

It is a huge doubt I have, because I have seen on CAP 413, FL 200, transmitted as flight Level two hundred, and how should then transmit it on Europe (out of UK) and on The USA airspace?
13
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4answers
3k views

What is the difference between “affirm” and “acknowledged”?

Recently, I've watched Air Force One and I heard ATC and the pilots say "Acknowledged." instead of "affirm" or "affirmative" as I've learned.. Is it common to say both? ...
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3answers
127 views

When a Tower and the Approach Control closes who takes over the airspace?

When a Tower and the Approach Control closes, who takes over the airspace? and also what about When a Tower, within an Approach Control, closes, who takes over the airspace?
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0answers
49 views

Where can I obtain a .KML file for a TRACON’s area of responsibility? [duplicate]

I want an overlay on my moving map for the radar service areas of a TRACON facility. Are there any sites that host this for free?
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1answer
99 views

Are taxi-way routing details saved?

I am currently working on taxi-way route optimization. Are there any systems that store the taxi routes taken by the aircraft either by hour or by day or by airplane?
6
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2answers
320 views

When must a pilot report Negative Contact?

Which regulation or AIM section specifically states when a pilot is required to report negative contact? It appears that different airports in the US have slightly different expectations. My ...
-3
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1answer
134 views

Why do airplanes circle three times in a holding pattern? [closed]

Why do airplanes circle three times in a holding pattern? I tried to look for information about it, but I did not figure out why a pilot would specifically do it three times?
22
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4answers
7k views

Can you request a new squawk code if you don’t like the one being assigned?

Just out of curiosity. If you get assigned a squawk code and you don’t like it out of superstition or other negative associations you have with it, can you request a new one?
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2answers
2k views

From an ATC perspective, what is an “arrival gate”?

I have seen reference to ATC assigned "arrival gates". As a passenger, an "arrival gate" is something like B12 or ...
0
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1answer
193 views

“Turn right, report heading”?

I can't say anything about authenticity, but here is a quote Tower: “Delta Zulu Romeo, turn right now and report your heading.” Pilot: “Wilco. 341, 342, 343, 344, 345…” Is such an instruction even ...
6
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1answer
296 views

How are both squawk and altitude transmited when operating a Transponder in Mode C?

I know that in Mode $3$ (which includes Mode A and Mode C) the aircraft transmits $12$ information pulses. That corresponds to $2^{12}=4096$ squawk combinations in Mode A which are sent to ATC to ...

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