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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4
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1answer
577 views

Who or what is the DEN and what do they do?

I was reading some older Av.SE pages and ended up on the ATC procedural document JO 7110.65 for handling emergencies. Down at the very bottom under 10.2.19(b) which has to do with medical/health ...
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1answer
102 views

What is the reason behind updating the radar tracks on the CWP in chunks instead of updating them all at once?

Some time ago, I noticed that the controller's screen (CWP) of a particular system in a European ACC. was not updating all the visible tracks at once but it was following this pattern: The screen ...
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4answers
2k views

Does "Cross [FIX] at 250 knots" mean I have to maintain 250 knots after the fix?

If you are given the clearance to "cross [FIX] at 250 knots", does this specifically mean : 1 ) Cross fix at 250 knots, and then after [FIX] your assigned speed is 250 knots until otherwise ...
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1answer
60 views

How are practice areas communicated?

When I fly near my local airport (KSSF) in San Antonio, there's a designated South Practice Area and North Practice Area. ATC knows where they are and all the ...
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1answer
743 views

What is the difference between CTAF and the Tower frequency? Why does the Chart Supplement list the same frequency twice?

At many part-time towered airports the Chart Supplement will have a listing along these lines: COMMUNICATIONS: CTAF 119.2, TOWER 119.2 (1400–0500Z‡) The CTAF is the same frequency as the Tower. What ...
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4answers
276 views

Which frequency to contact when arriving at a Class C airport when the tower is open, and which frequency when it is closed?

I came across this question on my PPL exam and I'm not able to properly interpret some pieces. The question is: When approaching Lincoln Municipal from the west at noon for the purpose of landing, ...
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1answer
32 views

How to convert European ATC license (and medical) to FAA equivalents?

I have an Air Traffic Controller license issued by the European union (compliant with ICAO standards). Ratings for tower and approach radar with current validations for both. How can I convert this to ...
5
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1answer
205 views

Is IWA (Phoenix Gateway) a Federal Contract Tower?

how can I find out which airports are operated by the FAA and which are FAA-contract (or even independently operated)? I'm currently looking specifically at IWA, Phoenix Gateway Tower.
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1answer
138 views

Can non-FAA towers employ foreigners?

I understand you must be a US citizen in order to work ATC with FAA. Is it different with the non-FAA towers? Could I as a European citizen be employed (working visa/greencard) there?
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2answers
914 views

What are the boxes around the airport on the IVAO Approach (APP) screen?

I play IVAO and I sometimes get curious about different positions that different controllers play on. Let's take this airport, Birmingham UK, this is what the APP (Approach) screen looks like What do ...
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1answer
163 views

In a two-pilot aircraft (Capt/FO), are both pilots held responsible for a pilot deviation?

In the U.S. if, for example, an aircraft is instucted by ATC to climb and maintain FL280 but instead climbs to FL290, are both pilots, in an aircraft requiring two pilots (e.g. A320 or similar), held ...
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2answers
264 views

What’s the difference between Arrival and Approach controllers?

Some airports have two separated frequencies related to arrival. Arrival and approach. When I navigate to some airports that have both frequencies, I first contact the arrival controller then, at a ...
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1answer
174 views

Pilot communication with ATC partially unreadable

Can anybody decipher this pilot's landing request due to moderate turbulence (some unreadable words...). Thanks ! https://www.icloud.com/iclouddrive/03kDM9-xQ7Oyz3kUaeRJj6M5Q#AUDIO-2021-12-03-07-51-...
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3answers
1k views

How to use/be an airborne relay

There are some cases where a pilot may not be able to reach ATC directly due to lack of power or being below the radio horizon: On a handheld backup radio After a forced landing Over open water In ...
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1answer
199 views

Why does the MVA have 1000 ft height buffer?

As per definition the Minimum Vectoring Altitude (MVA) in each sector provides 1000 ft above the highest obstruction [...]. I am curious where these 1000 ft stem from. Why not 500 ft? Why not 300 ft,...
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1answer
335 views

Are there any U.S. airports that offer GCA (PAR/ASR) approaches?

Are there any U.S. Civilian or Joint-Use (military/civilian) airports that currently offer either/both a PAR (Precision Approach Radar) or an ASR (Airport Surveillance Radar) Ground Controlled ...
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1answer
110 views

What should be approx altitude of jet aircraft 10 nautical miles to landing [duplicate]

Please assume the elevation of airport to 2000ft ASL. Under what conditions ATC might mandate aircrafts to fly at lower altitudes? What might be approximate speed at this distance?
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3answers
346 views

What is the difference between "cruise" and "en-route"?

I have a little misunderstanding about the two concepts: Cruise and En-route. Could you guys help me to compare the similarities and differences between these two concepts, maybe in some aspect like ...
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2answers
157 views

Does ATC expect 250 KIAS during vectors for an instrument or visual approach?

During vectors to an instrument or visual approach does ATC expect the pilot to maintain 250 KIAS until cleared for the approach or instructed to slow to another speed?
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1answer
527 views

How does an airspace class change from E to D affect already airborne aircraft?

In the US, there are some airports with a part-time tower. When the tower is in operation, the airspace around the airport is class D and requires communication with the tower. When the tower is ...
14
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1answer
1k views

What does "closed traffic" mean?

I'm a Japanese ATC working in Japan. I want to ask about "closed traffic". I checked 7110.65 for this. Question 1: What is successive operation? One day I was on duty and the air force pilot ...
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2answers
80 views

Flight directional headings [duplicate]

I listen to aircraft land and take off weekly. I noticed in taking off they usually only use about 3 to 5 different directions. I don't understand what they mean when for example they said to the ...
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4answers
3k views

What navigation actions does a pilot take when simply told to "go around"?

In this recording of ATC during the 2008 crash of a British Airways Boeing 777 at London Heathrow the controller is heard to say "Qatari 011, go around". How would the pilot of Qatari 011 ...
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0answers
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Why do flights approaching Kabul seem to take a different route since the Taliban took over?

From a reporter on Twitter: Nerdy question but genuinely curious: All fights into Kabul would previously approach from the east, flying towards the direction of Nangarhar, then making a U-turn over ...
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2answers
5k views

Why are planes required to cruise at round flight levels only above 18000 ft of altitude?

AFAIK, planes flying at up to FL180 (18,000 ft pressure altitude) are allowed to fly at both round and semi-round altitudes (e.g. 15,000 ft or 15,500 ft). Planes flying above FL180 must fly at a round ...
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1answer
100 views

Is the Special Traffic Management Program (STMP) still in use?

I'm doing some research on STMP. this NBAA link say that STMP is gone. however, this link makes it look like STMP was in use for oshkosh 2021. the subdomain may indicate it wasn't used though so it's ...
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1answer
158 views

Does compliance with ATC instructions apply to VFR aircraft in Class G?

(U.S.) 14 CFR 91.123 (b) states: Except in an emergency, no person may operate an aircraft contrary to an ATC instruction in an area in which air traffic control is exercised. FAR 91.123(b) was ...
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1answer
2k views

How do I request a frequency change to listen to ATIS?

If I only have one radio, and I'm using VFR Flight Following, what do I tell ATC when I want to pick up ATIS for the landing airport before I'm told to contact the tower?
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2answers
5k views

Did the last US plane to leave Afghanistan have support from the control tower?

CNN's says says that The last US military planes have left Afghanistan, Gen. Frank McKenzie, the commander of US Central Command, announced Monday at the Pentagon. The US departure marks the end of a ...
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1answer
834 views

VFR aircraft on a practice instrument approach—is the aircraft IFR? Do they receive separation?

A VFR aircraft contacts ATC and requests to execute a practice instrument approach (whether full-procedure or vectors-to-final). ATC issues the approach clearance, including the specific words "...
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4answers
896 views

What type of chart is displayed on ATC radar screens?

I am looking to make an emulation of the radar screen familiar to Air Traffic Controllers, such as the pictures below. I have been having a very hard time finding what type of chart/map is being used. ...
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3answers
1k views

How do Private Helipads Work regarding Airspace?

For executive helipads or helipads run by a private company but not within airport airspace (tourism or shuttle helicopters for example), how do they work from a regulations standpoint? Do pilots just ...
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1answer
138 views

Who Assigns Gates to Airliners?

When airliners arrive to major or medium airports, who is actually responsible for assigning gates and deciding who goes where? Is that up to Ground? The Airline? The Airport Authorities/Management?
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2answers
235 views

Pilots use of the term "with" then a letter when talking to ground [duplicate]

In ground comms when taxiing a pilot may say for example: "Kennedy ground, DELTA412 HEAVY, is in KILO-FOX, short of ALPHA with PAPA". I get that this means they waiting a KF exit of the ramp ...
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1answer
165 views

Approaching a towered airport for landing but no specific pattern entry direction from atc

Here’s the scenario that happened to me - Flying into a busy class D, I contacted tower with the usual “XYZ tower, Warrior 12345 12 to the west at 2,500 full stop with Oscar” They respond “Warrior ...
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0answers
61 views

Got question while reading ICAO document

I got question reading ICAO document(9971). On 3.1.4.2, it says: Studies have shown that occupancy count can be used to complement entry counts and allow higher values for such entry counts. I'm so ...
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3answers
236 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
484 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
5k 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 ...
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3answers
307 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 ...
9
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1answer
681 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 (...
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3answers
1k 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 ...
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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
356 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
99 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
2k views

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)?
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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 ...
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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 ...

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