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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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1answer
303 views

How unusual were MH370's final ATC exchanges?

There are 2 noteworthy occurrences in the ATC radio transcript: MH370 unnecessarily reported maintaining FL350 a second time MH370 did not read back the frequency for the handoff but famously only ...
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1answer
49 views

Restore air traffic controllers' instructions from aircraft tracks

Is it possible to understand what commands had been given to an aircraft if you look at its track containing information about lat, lon, altitude, speed and course? Is there anyone who has already ...
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2answers
145 views

What emergencies or failures should I report to ATC? [duplicate]

During a flight, what kinds of emergencies or failures should I report to ATC immediately? For what kind of emergencies or failures am I not required to report them? What is the general rule? Could I ...
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2answers
419 views

On a flight with short stops, do you terminate flight following at each stop?

On a cross-country trip, is it normal to terminate FF at each stop and reacquire it (potentially just a few minutes later) for the next leg, or would ATC prefer that you advise them it'll be a short ...
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2answers
131 views

Is the whole world's airspace covered by ATC? [closed]

I'm an enthusiast and have only flown flight/atc simulators (on the VATSIM network). Obviously sometimes the airspace you are flying in is not covered by any ATC (so I have to set my frequency to ...
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4answers
6k views

Can ATC handle a flight as emergency although the pilots have not declared an emergency?

The preliminary report for the LNI610 crash shows how much distractive conversation there was between ATC and LIN610 at a time when the pilots clearly didn't have the aircraft under control – as ...
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2answers
185 views

How long can ATC operate for without main power? [closed]

This question pertains to large towers at large airports. I'm assuming there is backup power in case of a power cut / power failure. But how long does a typical reserve generator / unit supply power ...
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5answers
287 views

Why can’t air traffic control radars determine the altitudes of primary targets?

There are two types of returns that show up on an air traffic controller’s radar screen: Secondary returns are not, strictly-speaking, radar “returns” at all, but, rather, signals automatically ...
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2k views

Are there any publically available recordings of conversations between ATC and pilots?

It can be either audio or transcription. It would be perfect if it also contains aircraft tracks.
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1answer
163 views

When flying in uncontrolled airspace, which ATC frequency should I contact if I have an emergency?

Question 1: If I am flying in uncontrolled airspace and I have an emergency, should I report on 121.5MHz if no ATC is within line of sight communication (which means I cannot hear the ATC and the ATC ...
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2answers
1k views

Please explain real-world procedures behind this “ATC joke”

One of the well-known kind of the "ATC jokes" (funny excerpts from real or invented communication between pilots and air traffic controllers) has recently caught my eye. I can't seem to understand ...
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3answers
191 views

When an emergency happens, why do pilots need to stay on the current ATC frequency?

Per the below order, I need to stay with the initial ATC frequency during an emergency, what is the benefit to do so? What if the aircraft entered into the airspace controlled by anther ATC or the ...
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0answers
100 views

What is DPI? How is it Useful? And How does it work?

I have heard of DPI (departure planning information) status for a flight. I wanted to know what is this Status for? How is it computed or determined? What are the different status for it if any and ...
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0answers
104 views

What If the Tower Is Obstructed by Clouds?

I know towers use radar to watch aircraft, obviously. But what about ground controllers? What if their view is obstructed by a low cloud level/fog? Is there such a thing as ground-based traffic ...
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1answer
56 views

Does a subsequent crossing restriction supersede earlier crossing restrictions?

Does a subsequent crossing restriction supersede earlier crossing restrictions? Here's an example. While flying the MIP4 arrival into KLGA, you receive the expected instruction to cross MARRC at ...
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1answer
133 views

Can paragliders communicate with ATC?

I am a private pilot looking to get into paragliding. After talking to some of my friends who do paragliding in the SF bay area and watching youtube videos. I noticed some fly through places like ...
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3answers
2k views

Reasons for significantly lower than normal approach

Not sure if this is going to be answerable to be honest, as I'm sort of asking for a bit of retroactive mind-reading! But here goes anyway! I was driving along Clifton Drive North, Lytham Saint Annes,...
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0answers
24 views

how to simulate the performance parameters wand EGT parameter?where can i get the data? [duplicate]

I went through a lot of research papers and (kind of) understood the parameters needed for Engine Condition Trend Monitoring. From what I've understood, I need N1speed,N2 speed, Pitch, AOA, Exhaust ...
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2answers
129 views

Is the Tower (Local) Controller responsible for “separating” VFR traffic in the pattern in the U.S. in Class D airspace?

For example, in U.S. Class D airspace, if an inbound aircraft operating VFR is instructed by the Control Tower to "enter left downwind for runway 18, report entering downwind," is the controller ...
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1answer
163 views

Is there a serious effort underway to move from a highways-in-the-sky approach to a mesh-network approach?

As far as I'm aware, there are certain "motorways" or corridors which air traffic uses, rather than navigating more directly from origin to destination. I remember listening to a documentary which ...
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0answers
42 views

How long does it take for a new FIR to be created by ICAO

How long does it take ICAO to create/approve a new Flight Information Region(FIR)? Occasionally FIRs are split because of various reasons. The question is how long ICAO takes to approve the new FIRs ...
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2answers
106 views

Is vertical separation based on geometric difference or altimeter difference?

In the comments below one of the answers to this question about the influence of temperature on vertical separation, the question was raised whether ATC ensure 1000ft vertical separation based on ...
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1answer
108 views

Within the US: When, and by whom, is the Transition Level determined/published?

There are several SE Q&As that deal with the terms Transition Altitude, Transition Layer, and Transition Level. The very-brief, paraphrased definition of the Transition Level (TL) is: The ...
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3answers
3k views

In the US, is it legal to cover up some of the required gyro instruments during flight under IFR in actual IMC?

In the US, is it legal to cover up some of the required gyro instruments during flight under IFR in actual IMC? The purpose being for "partial panel" practice.
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1answer
50 views

Any ANSPs uses stack controllers?

The stack controller only controls one or two stack and release aircraft accordingly. Does any ANSP (air navigation service provider) provide this service?
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3answers
380 views

Can a general aviation aircraft be forced to land when crossing the airspace of a country?

I don’t know how to fly yet but my friend has a Cessna, he says it’s awesome to have and fly one and he also said he will take me for a flight one day. I have been researching and reading online and I ...
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1answer
122 views

FAR Part 91/VFR Formation flying with only one transponder turned on?

Two aircraft are planning on conducting a standard formation flight (aircraft remaining within 1 mile of each other) as follows in the U.S.: Maintaining VFR below 10,000 MSL; Remaining outside/clear ...
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1answer
88 views

What is the usual practice in interacting with ATC at Top-of-Descent? [duplicate]

Presuming an ordinary long-haul flight on which the plane's navigation system has selected a point as Top-of-Descent, and there are no particular issues (such as weather), when would ATC typically be ...
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3answers
185 views

What is the correct ATC phraseology for tower to clear a practice approach?

If you have an aircraft (training flight) that is doing practice instrument approaches and ATC is notified that they will fly the approach and then go missed, what is the correct phraseology for the ...
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0answers
35 views

Where can I find exhaustive and current list of ARTCC frequencies?

I found was http://www.milradiocomms.com/artcc_frequencies.html which refers to "update file which resides on the FAA's server". How do I obtain location of this FAA file?
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1answer
125 views

Is the ATC of the lower and upper areas of the Netherlands combined or segregated?

I am simulating the capacity of the Netherlands airspace by using the sector capacity. But I am wondering for different height, the capacity works for both or a single level. Therefore, I want to ...
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1answer
317 views

What, if any, are the rules on ATC politeness?

There are plenty of recordings available of ATCs acting impolite, in the linked video, the pilot says he will file a report about the conduct of the ATC. Would this actually result in any ...
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3answers
162 views

Can a controller be tasked to provide more than one ATC service at a time?

During a visit to one of the ATC Facility I found out that the Aerodrome Controller was also providing procedural approach control service along with aerodrome control service. Similarly, Area Radar ...
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1answer
172 views

What is the procedure following a near miss?

This is a follow-up to this question - in particular, to this video posted in MichaelK's answer. What would be the correct procedure for the pilot to follow in this situation? (That is, after a near ...
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1answer
220 views

How to advise others of imminent danger?

In a case such as United 326 - where an aircraft got cleared for takeoff while other planes at the same time get cleared to cross that runway - how would an outside party that picks up on the mistake ...
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3answers
423 views

Why would a pilot on final to a towered airport not speak up when ATC clears another aircraft to land on the same runway, without mentioning them?

Every time I watch AOPA's Accident Case Study video Communication Breakdown, I'm left wondering. Here's an aircraft (in this case, '1DA) on final approach for landing on a towered airport, when ...
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1answer
295 views

What happens if an ATC tower is completely disabled? [duplicate]

What is the procedure for aircraft, if the ATC they were relying on to land, is, in some way, completely disabled? (for example there is a fire that destroys the whole building and all equipment). If ...
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3answers
146 views

If cleared to cross a runway and expedite but are slow to get away, are you obliged to stop?

Suppose ATC says "Big Jet, cleared to cross runway 36, expedite" and you acknowledge "Cross runway 36, wilco, Big Jet". As you start to move forward you immediately realize that you are unable to go ...
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1answer
203 views

Do special procedures exist for commercial pilots flying over Russia?

Since Russia, and in particular the Asian part of it, is huge, I was wondering if there are special procedures for commercial pilots to follow over Russia (in particular and specifically Siberia and ...
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2answers
154 views

Can RVSM safely be further reduced?

Since the world population shows no signs of slowing down its rapid increase, it's pretty safe to say that means we can only expect more concurrent flights as time moves forward. Is it physically ...
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2answers
126 views

Do pilots have a generally preferred “traffic” resolution?

For aircraft cruising along at altitude, it is common for the controller to assign an aircraft a new course or altitude or speed for some reason such as "for traffic". My question is, would most ...
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1answer
230 views

Does the “follow” instruction give an aircraft clearance to turn onto a taxiway and/or cross a runway?

Consider this ATC instruction from a ground controller: N123, continue down Alpha, turn right at Kilo, hold short of RWY36. N456, follow N123. Does this instruction mean N456 can turn right ...
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1answer
309 views

Why wouldn't KJFK offer the ILS for 22L?

(Source: Flightradar24) The above was from last Sunday around 17z. I was watching FR24 with the ATC feed. The airport was operating in 'arrival priority' with approaches to both 13L (Canarsie) and ...
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4answers
287 views

How does Air Traffic Control know a flight's route and destination?

I am trying to find out in layman's terms how does ATC determine the direction a flight has to take after takeoff, or when should it start descending for the destination airport. I understand it has ...
3
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0answers
157 views

Identify this Chicago aircraft incident involving loss of control

Many years ago I listened to an ATC tape of an aviation incident involving a commercial aircraft that had some type of control loss, I think in Chicago. After several attempts to set up for an ...
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1answer
139 views

What does the indication “ATC” in some Take-Off Minimums mean?

While studying FAA's Standard Instrument Departure Procedures, I came across the La Guardia Five Departure SID. Take, for example, the Take-Off Minimums for runway 13L: Rwy 13 (Coney Climb): 400-2 ...
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1answer
231 views

What's the minimum legal height in Europe for a low pass at an airport?

Does anyone know in which document I can find the legal minimum height for a low pass at an airport, assuming the pass has been approved by ATC? I have been discussing this topic a lot with several ...
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1answer
139 views

Is it possible for more than one flight to have the same departure and arrival time slots?

I'm working with real ATFM data such as the planned departure and arrival times of several flights within a given period of time, and I came across a surprising feature. I found out that some flights ...
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2answers
439 views

What is the ATC protocol for hijackings? [closed]

If a commercial aircraft is successfully hijacked, by a competent pilot / pilots, and they make contact with ATC for regular requests (i.e. weather updates, flight path information or clearing air ...
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3answers
3k views

Was ATC overstepping its boundaries when advising a pilot to ignore a cell warning?

I found a clip on YouTube (via an article on Jalopnik) of an Aer Lingus pilot departing from JFK. Due to a weather cell showing up on his instruments, he can not make the left ATC asks him to make. ...