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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2
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0answers
167 views

Is “margin final” an ATC instruction in USA?

I was south-east of the airport and the active runway was 24. The ATC said, "Make straight in and remain south." And then he said, "Margin final, cleared [to] land." What is margin final? I'm an ...
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2answers
182 views

Is there any current and/or upcoming technology that alerts Air Traffic Controllers in case of loss of aircraft separation?

Currently doing an assignment and it to analyse an accident where older atc systems could have been at fault. In 1995 there was an incident where two aircraft came closer than the then current ...
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2answers
2k views

What is the procedure to follow for “traffic not in sight”?

What would be the proper procedure to follow, when in the pattern or approaching an airport, if ATC gives you the position of an aircraft and you do not have them in sight? Do you just report "not in ...
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7answers
9k views

Can two aircraft be allowed to stay on the same runway at the same time?

My understanding is that the runway should always be cleared, and occupied by no more than a single aircraft for takeoff and/or landing at any given time. Is there any scenario in which ATC can ...
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6answers
4k views

What will be the immediate action by the pilot and ATC if any plane blocks the runway while landing?

Suppose, if the Airport has only one runway and one plane is trying to take off at the end of the runway and other plane trying to land from the other end of the runway. Due to any reason if the ...
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1answer
190 views

What is special about the ICAO Caribbean region for VFR climb/descent?

In the FAA JO 7110.65 that provides rules for air traffic control, the following limitations are listed for VFR climb and descent: 8−8−5. VFR CLIMB AND DESCENT a. In the Houston, Miami, and ...
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1answer
102 views

Georgian Airways Flight Delay - Did LGW refuse flight and why? [closed]

Hi Our flight was delayed for 8 hours due to bad weather at Gatwick but there was no bad weather. I believe the airline was rejected by Gatwick due to a chance for holding if a storm came in. Is there ...
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2answers
477 views

What is the proper procedure to change VFR altitude when changing heading from east to west?

When you fly from west to east, sometimes your route heads west to avoid obstacles or to clear class B or C airspace. According to hemispheric rule, let's pretend I selected 7500 feet for VFR to the ...
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4answers
725 views

What kind of waypoints/routes are used to prepare a flight plan in practice?

I have noticed that FAA provides data delivery service where both waypoints and ATS routes are available to download. By looking at the files, I realize that there are a variety of waypoints and ...
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1answer
431 views

Which commercial aircraft can fly Micro-SLOP procedures?

"Strategic Lateral Offset Procedures (SLOP) are approved procedures that allow aircraft to fly on a parallel track to the right of the centre line relative to the direction of flight to mitigate ...
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2answers
1k views

How can I get 'lead point' for aircraft to intercept final course?

As controller, I always wonder when should I instruct aircraft to turn. The aircraft does not turn at right angles as soon as instructed, but rather has turning radius. So, I tried to find the formula ...
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2answers
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May the tower use the runway while an emergency aircraft is inbound?

I have a question regarding an aircraft in emergency. Of course it will have priority for landing but if the position of this aircraft is very far, like for example 20 minutes or more away, would the ...
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3answers
687 views

What is the standard report when pilots exiting and clearing the runway

Let us say I landed on runway 7 and will exit the runway thru taxiway Charlie, is that a standard report like "(Aircraft ID) taxing clear RW7 at Charlie"?
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2answers
206 views

Are there locations/altitudes with minimum speed requirements?

For example, a slower aircraft operating on the North Atlantic Track System would have an operational impact on surrounding/overtaking aircraft as well as potentially increasing ATC workload to ensure ...
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1answer
232 views

Are Transponder Mode A and C still in use?

Are the ATC transponder Mode A and Mode C still in use (according to ICAO or FAA rules)?
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1answer
538 views

What was the motivation for revoking the licence to the pilots of Northwest flight 188?

This video describes Northwest flight 188, where two pilots overshot their destination by 150 miles, without contacting ATC for an hour. They cited 'cockpit distractions' as the reason and ...
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1answer
479 views

On ATC's radar, does an aircraft that loses its transponder simply disappear?

If you look at shows like Air Crash Investigation, which surely take some creative license in how events are portrayed, they often portray the disappearance of an aircraft, or specifically loss of its ...
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2answers
278 views

Can a commercial pilot decide where to make their turn after departure?

If there aren't published vectors to tell a commercial pilot which heading to take as they climb, can they decide where to make their initial turn on their own or would an ATC always involved in where ...
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1answer
179 views

What is the procedure to fill/send/approve a flight plan to the ATS network from outside?

We are planning to develop an app that allows general pilots to fill/send a flight plan to the ATS. We're wondering to know if it is needed to have a regular access (register access or account) to the ...
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3answers
265 views

Do helicopters need a class B entry clearance when air / hover taxiing?

You're a helicopter pilot at a class B airport. You'd like to taxi to another parking spot. The ground controller could either give you a hover taxi clearance or an air taxi clearance, depending on ...
4
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1answer
146 views

Why does the US not have AIREPs?

After looking into aircraft report data at Aviation Weather Center, I realized that PIREP is usually reported inside of US; on the other hand, AIREP is typically reported outside of US. I was ...
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1answer
281 views

What is the definition of “airport boundary”?

While flying in to KBTR in a helicopter, I called tower and stated “10 west, landing south ramp with information Mike”. They responded “proceed to the airport boundary”. When I was closer I got the ...
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2answers
886 views

What is the proper ICAO phraseology to activate a flight plan?

OK, so you have a flight plan filed (over internet, phone, company or however), go to the aircraft and get in the cockpit. So you call the controller and request IFR or VFR as appropriate. What is ...
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0answers
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What is the FAA regulation for the 3 mile / 1,000' separation for a commercial airliner? [duplicate]

I need help finding the Number/Citation for the FAA regulation/order that states commercial airliner separation should usually be at least 3 miles laterally, or 1,000 feet vertically. I cannot find ...
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1answer
253 views

What is a “KALP114A” ATC regulation?

My flight (in Spain) was delayed for 6h and after I submitted the claim the airline worker answered me that it was delayed due to KALP114A regulations imposed by ATC, but I didn't find any info, that ...
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146 views

Are there any cases on record of an aircraft crashing into an occupied air traffic control tower?

Aircraft frequently1 crash, or come close to crashing, from almost every cause imaginable, on or near airports, these being places where aircraft of all sizes take off and land and sleep with many ...
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2answers
259 views

What are the Area Control Center (ACC) frequencies for Germany?

I'm looking for the frequencies of all Area Control Centers (ACC) in Germany. What are they, or where are they published?
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1answer
121 views

How universal are air traffic control systems, training and practices?

A commercial pilot, especially in the airline industry, is in a role that is essentially the same as that of a pilot who is employed and was trained in just about any other part of the world. Does ...
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1answer
471 views

Are requests for an emergency landing ever refused?

Under what circumstances might it happen that a pilot's request to make an emergency landing is refused? Is such a thing known to have occurred?
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2answers
1k views

Why is air traffic control done manually by humans?

I'm not a pilot but have a software developer background, so forgive my aviation naivety. From what I understand there have been numerous issues and almost-issues relating to human air traffic ...
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1answer
553 views

Is the taxi route omitted in low visibility (LVP)?

This video shows an auto land into Schiphol during bad weather / LVP (Low Visibility Procedures). After reporting vacated, the ATC instruction is quite short (around 2:45). Simply the gate number. (I'...
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2answers
351 views

Does ICAO allow continued flight in RVSM airspace after a transponder failure?

If a civil aircraft's transponder fails in RVSM airspace, can it still be allowed to fly in RVSM according to ICAO? And could it be allowed to fly in class A airspace, according to ICAO?
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2k views

Do seaplanes need to get clearance for takeoff?

Do seaplanes need to get clearance for takeoff? Do they have ATC? How do seaplanes get clearance to takeoff?
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3answers
164 views

Why is it necessary to fly in visual conditions to certain unmanned airstrips?

I have come across certain unmanned airstrips where only VFR flight is allowed not IFR? I wonder what can be the possible reasons for that?
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1answer
252 views

Does ATC clear IFR helicopters for a visual approach if landing at a helipad on a high-rise?

I'm guessing that most helipads on downtown high rises don't have any instrument approaches. If a helicopter is on an IFR to a helipad without any instrument approaches, does ATC just clear them for ...
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3answers
885 views

How many aircraft does an ATC controller usually handle at the same time?

My question relates to the question What is the maximum number of planes a controller can control?, which asks about the maximum limit. One comment indicated 35 aircraft per hour for en-route segment. ...
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1answer
144 views

In the US, in actual practice, workload permitting, will ARTC facilities grant SVFR clearance for surface-level Class E “extensions” (E4 airspace)?

In the US, in actual practice, workload permitting, will ARTC Centers and Approach Control facilities grant clearance for Special VFR operations in surface-level Class E "extensions" (E4 ...
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2answers
300 views

How do messages get from the destination airport to a pilot?

A captain waiting in her airliner for take-off at an airport might inform her passengers: We'll be waiting another ten minutes before we're able to take off, as traffic is very busy at [destination]...
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3answers
15k views

Did we get closer to another plane than we were supposed to, or was the pilot just protecting our delicate sensibilities?

Yesterday, April 28, 2019, I was flying on Alaska flight 557 from LAX to PDX. About an hour into the flight (near the California/Oregon border) I was looking out the window and saw a jet travelling ...
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1answer
469 views

Is it Legal to listen to Air Traffic Control Frequencies in the USA on a computer for entertainment?

like listening to scanners an radio frequencies for entertainment and i make it a game because i use a online flight tracker and try to find that aircraft. Is it legal?
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1answer
100 views

Why does V165 have two different MEAs over the same route section?

Why does V165 have two distinct MEAs which vary by a large factor (apart from the 180$^{\circ}$ rule of altitudes) considering they would be clearing the same obstacles and receiving signals from the ...
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4answers
4k views

An appropriate way to practice ATC communications

I'm a PPL trainee and I'm looking for a way to improve my radio communication. https://www.liveatc.net/ is a great way to practice but I can't fully understand the conversation between the unit and ...
3
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1answer
220 views

Are ATC assigned altitudes temperature compensated?

For the purposes of commercial air traffic operating in a terminal/approach space area that has temperature compensation applied to waypoints in the active flight plan, if ATC assigns an altitude, ...
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3answers
6k views

How long after the last departure shall the airport stay open for an emergency return?

For how long after the last take off for that day, will an airport stay open for emergency return of that last departed aircraft? Where can I find that recommendation? To clarify: an airport needs to ...
4
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2answers
238 views

How (and when) does Heathrow alternate arrival paths?

I've noticed that flights over Richmond (particularly arrivals) seem to have significantly reduced over the last few weeks. This is based on looking at Flightradar, as well as listening to the noise ...
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1answer
162 views

Are the nearby airplanes cleared of the sky when launching Falcon Heavy? [duplicate]

I was checking Flightradar24 when launch occurred and didn't see any difference. Also, 3 boosters landed back successfully. I assume the sky has to be clear of airplanes to avoid any potential ...
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5answers
3k views

How is radar separation assured between primary and secondary targets?

Air traffic control radars come in two flavours, with most ATC centers using both and displaying the output of both on a single screen: Primary surveillance radar (PSR) is a true radar system, which ...
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3answers
3k views

Do airline pilots ever risk not hearing communication directed to them specifically, from traffic controllers?

I gather pilots communicate regularly with air traffic controllers within air traffic controllers' jurisdiction or airspace as they enter the space, during their time in that space and as they leave. ...
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1answer
82 views

How are change-overs between regional air traffic patterns communicated? [duplicate]

The airport near me that has two major landing/takeoff patterns part of a large regional air traffic control plan involving other major international airports (SFO/OAK/SJC) The duplicate-cited ...
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1answer
597 views

What does the ATC term “a company traffic” mean? [duplicate]

During my flight training I often heard the term "a company traffic" in radio calls from the ATC like: N123AB a company traffic is joining downwind runway 24 ...

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