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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1answer
45 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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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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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)?
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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 ...
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979 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 ...
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2answers
449 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
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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
206 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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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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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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107 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,...
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1answer
272 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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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
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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
151 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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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
115 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
197 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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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. ...
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2answers
506 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
73 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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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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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,...
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1answer
120 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?
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6answers
464 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 “...
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208 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 ...
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1answer
117 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 &...
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1answer
139 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
164 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 "...
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1answer
72 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 ...
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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?
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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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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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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
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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?
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2answers
291 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 ...
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1answer
132 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?
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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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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 ...
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1answer
185 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 ...
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1answer
286 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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2answers
164 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
209 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 ...
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1answer
380 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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1answer
4k 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,...
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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 ...
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1answer
215 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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147 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 ...
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2answers
218 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 ...
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1answer
140 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 ...

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