Questions tagged [air-traffic-management]

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How to become a master at multitasking

I am a student pilot with 60 hours. The first 50 hours I received 5 years ago and the last 10 is what I have received within the past month. I need some advice: Throughout training My instructor ...
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2 votes
2 answers
152 views

While descending some pilots put local pressure long before reaching transition level?

Isn't this risky? I thought once they pass transition level they should change to local pressure... But is this not risky to put local pressure qnh before... risky in terms of separation wheter ...
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0 votes
1 answer
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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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1 vote
1 answer
112 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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2 votes
1 answer
124 views

Was NextGen simulated/tested against alternatives?

Researchers in aviation usually test systems in simulated environments to find out the pros, cons, challenges, etc. Now ADS-B is a key component of NextGen and its European counterpart. And I've seen ...
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23 votes
2 answers
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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1 vote
1 answer
100 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?
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-2 votes
1 answer
161 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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0 answers
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How to find out how many aircraft depart/land from a country per day?

I am trying to get the following information. I would like to know for each day how many aircraft have taken off and departed from a specific country. This information should be up to date and ...
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31 votes
3 answers
5k views

What does ATC do during "slow" times?

I know at larger airports, it's NEVER a slow time. But what about at smaller airports that are large enough to rate manned ATC, but things aren't always fast-paced, high-traffic like at JFK or DFW, ...
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  • 1,411
4 votes
1 answer
1k views

What is the difference between en-route delays and airport delays?

ANSP performance is gathered an published online on https://ansperformance.eu. They monitor complexity, delays, efficiency and other operational data. I also noticed they have two ways of describing ...
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1 vote
1 answer
190 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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29 votes
6 answers
4k views

Why cruise at 7000' in an A319?

I was on a flight from Philadelphia (KPHL) to Boston (KBOS), after some delay and some change of route due to weather, the captain announced that we will be cruising at 7000' due to delays in the area....
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  • 442
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1 answer
146 views

What is the name of the previous Air Traffic Management System (ATMS) of Hong Kong International Airport?

Hi I really need help for the question. The current ATMS for Hong Kong International Airport is the AutoTrac III, but does anyone know what is Hong Kong's Previous ATMS?
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1 vote
2 answers
1k views

"Report a 3 mile right base" - where is it measured from? [duplicate]

At which position should you report to ATC?
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1 vote
1 answer
617 views

How many private jets land at Heathrow airport per day?

Heathrow airport is one of the busiest airports in the world, one would assume most traffic there is reserved for commercial airliners because they carry a much larger number of passengers. How many ...
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0 votes
2 answers
211 views

If all aircraft were TCAS-equipped, how would this change ATC routines?

« The primary purpose of ATC worldwide is to prevent collisions, organize and expedite the flow of air traffic, and provide information and other support for pilots. » (source) If all aircraft ...
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3 votes
2 answers
666 views

Why are both ATC and TCAS tasked to prevent collisions although TCAS takes precedence anyway?

« The primary purpose of ATC worldwide is to prevent collisions [...] Many aircraft also have collision avoidance systems, which provide additional safety by warning pilots when other aircraft get ...
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6 votes
3 answers
2k views

Can pilots choose runway and landing direction?

Pilots normally receive landing clearance for a specific runway assigned by ATC. Absent an emergency, can pilots of commercial flights (depending on the wind conditions for example) choose a ...
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  • 3,284
3 votes
2 answers
184 views

When must airliners follow airways? [duplicate]

Please give a basic explanation of how commercial aviation traffic is routed for readers without any foreknowledge: Can commercial aircraft only follow airways like cars on highways ? Or are ...
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  • 3,284
1 vote
0 answers
171 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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6 votes
1 answer
1k 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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  • 63
0 votes
1 answer
170 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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6 votes
1 answer
457 views

What is black routing and red routing?

In a meeting with aviation experts, the terms black routing and red routing were discussed. What are they? From the discussions I was able to put together that either the TMU (Traffic Management Unit) ...
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2 votes
1 answer
652 views

What does "RA" mean in the FAA Terminal Constraints?

I'm trying to interpret the Terminal Constraints listed on the Operations Plan Advisory (https://www.fly.faa.gov/adv/adv_spt.jsp). RA seems to be used in the context of weather, but I haven't been ...
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1 vote
1 answer
181 views

Mathematical model used in free route airspace

As a new researcher in an air traffic institute, I am currently looking into mathematical models - promising or otherwise - that are used in modelling free route airspace. What is a good place to ...
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4 votes
1 answer
620 views

How does the capacity of 2 parallel runways compare to single runway?

Under IFR, what is the capacity of 2 near parallel runways and how does it compare to mixed mode single runway?
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5 votes
1 answer
478 views

How is separation managed when there are only two parallel runways in a very busy airport?

In the world's busiest airports, how is separation managed between departures and arrivals when there are only two parallel runways like in London Heathrow. What is the minimum safe separation?
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5 votes
1 answer
952 views

What is the minimum distance allowed between planes in flight, in Europe?

What is the minimum vertical and horizontal distance allowed between aircraft operating in European airspace? (This linked question is the US-specific equivalent of what I am asking about European ...
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1 vote
1 answer
692 views

Is a holding pattern always counter-clockwise?

Is a holding pattern always counter-clockwise? Or is it dependent upon the controlling airspace?
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  • 6,467
51 votes
4 answers
22k views

How do hot air balloon pilots avoid collisions?

There are many places in the world where hundreds of hot air balloons are flown in close proximity to each other. How do the pilots steer them away from each other to avoid mid-air collisions? Wind ...
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3 votes
0 answers
119 views

How are AFTN costs charged to ANSP's and Airspace Users?

I'd like to know how ANSP's like the FAA/SENEAM/etc.. get charged for sending and receiving messages over AFTN. I'm wondering if it is on a per characher/message basis or if they pay in bulk. Also, ...
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3 votes
1 answer
348 views

How are sector capacity constraints set in the current US ATC system?

My understanding is that in ATC, one of the constraints when considering the distribution of flights is the number of aircraft occupying a sector. Each sector can have different capacities. I have ...
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  • 383
10 votes
2 answers
1k views

Are Air Traffic Flow Management Algorithms mostly based on linear programming techniques?

I'm really interested in knowing the methods used by the Air-Traffic-Flow-Management (ATFM) providers to increase the throughput of the airspace by balancing safety, efficiency and cost. I've been ...
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  • 1,660
8 votes
1 answer
15k views

At what intervals do planes land and take off from Chicago O'Hare?

Is there some data available which shows the intervals at which planes take off and land at Chicago O'Hare? Just by taking a look around the last time I visited ORD couple of months back, it seems to ...
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