Questions tagged [radio-communications]

Radio is the primary way that pilots communicate with air traffic control and with other aircraft.

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3answers
957 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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3answers
675 views

While flying, how do I contact someone who is on the ground?

As a regular General Aviation pilot, how do I contact or relay a simple message to someone on the ground? For example, to update a friend, family member, or taxi company with an ETA or a meeting point....
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1answer
117 views

Where can I find canonical examples of radio communications at non-towered airports?

I'm trying to find any canonical examples of radio communication patterns at non-towered airports. The FAR/AIM has very little in terms of sample announcements, etc. The AC-90-66B (https://www.faa.gov/...
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What is the exact meaning of “manoeuvring” when said by ATC in reference to traffic?

In the UK, when receiving a basic service, sometimes the ATC unit passes traffic information. They may say it like this: “Traffic to your three o'clock, similar level, C172 manoeuvring.” What ...
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10answers
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Best way of learning the aviation alphabet?

I want to learn the aviation alphabet, and when searching the Internet on how to, I see a plethora of approaches, so I thought of asking here! If it's primarily opinion based, let me know.
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2answers
713 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
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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1answer
216 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 can a sUAS operator contact ATC/identify themselves when contacting ATC?

In a comment, abelenky offered some words of wisdom which I personally agree with regarding sUAS ops near a surface Class C: When in doubt or close, call Tower and state your intentions. They'll ...
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2answers
115 views

What are the proper radio call-outs on uncontrolled airfields?

I know that there are many non-commercial runways that do not have an active Air Traffic Controller on-duty, and that many small aircraft use these runways for takeoff and landing, but I never ...
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How should I establish initial contact with ATC after being handed off by another controller?

What is the proper way to contact a new air traffic control facility after you have be instructed to do so by the controller you are currently interacting with? As a practical example: Here in ...
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4answers
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How are range and frequency related in HF communications? [closed]

How does the range of HF communications differ with frequency used? Is it less frequency more range, or more frequency less range?
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How should a Traffic Control Tower notify aircraft that their frequency just changed?

What is the policy for ATC towers to notify aircraft the frequency they broadcast and monitor on has changed? How do they do it, if radio isn't available (because they just changed their frequency)?
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1answer
69 views

Portable radio for cockpit communication [closed]

I am a private pilot based at Van Nuys airport in Los Angeles. Recently due to traffic congestion we have to hold short for extended periods of time, 20-25 minutes. I thought to get a portable radio ...
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2answers
321 views

When do I have to contact Centre when departing/arriving at an airport with an ATF?

I'm looking at St-Frédéric airport in Quebec, Canada (CSZ4) and specifically at the "COMM" section. It says that there is an Aerodrome Traffic Frequency (ATF) on 122.8 but it also seems to say that ...
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1answer
286 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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1answer
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How do airline pilots contact their company while in the air?

Sometimes airline pilots need to get in touch with their company while in the air, for example diagnosing cautionary messages or reporting a diversion. By what means is the communication channel ...
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1answer
4k views

Can general aviation use UHF to contact ATC?

In the US, if a civil aircraft has a UHF radio are there any regulations against it performing ATC communication on the UHF bands? Pointers to the appropriate CFR's would be appreciated. This ...
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2answers
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What is the name or part number of the Bose 'Lemo' aviation headset connector?

In a similar direction to this question, I was wondering if anyone knows the name or part number of the connector commonly featured on Bose aviation headsets such as the A20. It is commonly know as ...
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1answer
323 views

Question about congestion of the 1090MHz frequency

I'm no expert so there's likely to be a lot of mistakes in this post. ADS-B - Automatic Dependent Surveillance - Broadcast, (out) transmits (in) receives position data from/to other aircraft and to ...
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1answer
4k views

What are the reasons for the particular range of VHF and UHF frequencies?

Generally, VHF frequency range is 30~300MHz and UHF is 300~3,000MHz. (according to Wikipedia). However, in ATC, VHF frequency range is 117.975-137MHz and UHF is 225MHz-400MHz. Why is there a ...
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3answers
296 views

Why are lower VHF frequencies used for towers?

So, why are usually lower VHF frequencies (around 118MHz to roughly 120MHz) used for towers and higher frequencies (around 130MHz to 136.975MHz) for ACC? What is the advantage of using lower ...
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3answers
280 views

How would fighter jets make contact with a previously hijacked aircraft?

For example, a plane is hijacked but civilians regain control, they know how to change the plane's frequency but no procdeures - i.e. dont know guard frequencies. There are fighter jets alongside who ...
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1answer
808 views

What dialogue would a crop duster typically have with ATC?

By Stefan Krause, Germany (Own work) [FAL], via Wikimedia Commons What is the exact dialogue a crop duster pilot will have, if any, with ATC on a routine flight?
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Is prior clearance into Class B airspace revokable?

I was piloting outside of Class B airspace in an area well known for being difficult from which to contact ATC via radio because of mountainous terrain. When I did get cleared into Class B, I was only ...
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5answers
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Which ATC instructions should be repeated back by the pilot?

AIM 4-4-7 (b) says: Pilots of airborne aircraft should read back those parts of ATC clearances and instructions containing altitude assignments, vectors, or runway assignments as a means of ...
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4answers
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When does ATC contact the pilot for a frequency change?

Usually, when the aircraft enters a new flight information region for example, ATC will ask the pilot to enter a new frequency. I'm curious about when they do. Is there a rule about it (in an IFR ...
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2answers
308 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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3answers
951 views

What is a metering frequency and why would an airport have it?

I just read a post from a pilot complaining about how he thought a metering frequency was useless. It has something to do with being on the ground at an airport. What is it, what purpose does it ...
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80 views

Is the EASA RT License valid internationally?

I am planning to get a PPL license in Czech. As part of the PPL license I should get a RT License (in English, not Czech). Is that license is international? I mean, if I want to rent an Airplane in ...
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5answers
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Is there a solution to radio interference?

I was reading about the Tenerife Disaster and came across what seemed to be the probable cause behind the accident. A simultaneous radio call from the Pan Am crew caused mutual interference on the ...
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262 views

Can I use audio containing Canadian ATC/broadcast radio transmissions in a YouTube video?

I often record my flight training without audio and post some of it to YouTube. I would like to add in audio recording of what I hear and say over the radio as well, but my ground school suggested ...
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Is it required to contact approach when flying VFR into a Class D airfield?

Is it required when under VFR to contact an airfield's approach when approaching to land at a class D? KDLH is my example airfield. They possess independent radar approach and departure (same ...
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3answers
3k views

Flying out from an uncontrolled field, should I contact approach or departure at the nearby control field?

I am a new pilot who flies out of an uncontrolled field. When I depart and want to ask the controller for the nearby controlled airfield for flight following, should I contact approach or departure, ...
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0answers
32 views

Volume differences between intercom and outside communications [duplicate]

While flying I can hear my instructor in my headset talking no problem, but when they (and me) are speaking with ground/tower the volume in my headset is much lower. Is there anyway to increase the ...
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2answers
154 views

What are the other clearance and instructions that must be read back? [duplicate]

The following items must always be read back: ATC route clearances; clearances and instructions to enter, land on, take off from, hold short of, cross or backtrack on any runway; and runway-in-use, ...
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2answers
435 views

Is a ground station radio license required for UAS operations in the US?

When conducting UAS operations would a PIC or Spotter be considered a ground station or an air station? The communications would concern a sUAS in the air, but the radio is physically on the ground. ...
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4answers
3k views

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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Why are turbine-powered aircraft “considered ready for takeoff”?

In an answer given to How can I politely remind ATC that I'm waiting for instructions or clearance? by @Mark, he quoted part of AIM regs: 4-3-14. Communications a. Pilots of departing aircraft ...
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1answer
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What are the differences between ACARS and CPDLC?

What are the differences between Aircraft Communication, Addressing and Reporting System (ACARS), and Controller Pilot Data Link Communication (CPDLC)? Can anyone please let me know in short, what is ...
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2answers
7k views

Does air traffic control identify a distress situation when an aircraft flies triangles in the sky?

There is an account in a TSB Canada investigation report after a loss of radio and transponder: The emergency procedure to be followed by a pilot to alert radar stations when in distress and unable ...
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4answers
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Can normal PC headsets replace 'aviation' headsets?

Aviation headsets have noise reduction and a larger jack (1/4") than most PC headset counterparts (1/8"). But there are many excellent quality PC headsets with sound-proofing materials which ...
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2answers
168 views

Do aircraft carry commercial VHF radios?

Years ago, I was working in the bush and we used portable radios on something like 154MHz. When it came time for pickup, we were able to talk to the helicopter pilot on that frequency. Since it's ...
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1answer
8k views

What's the meaning of underlined frequency in sectional chart nav aid box?

There is a statement to describe the underlined frequency in legend, it says: Underline indicates no voice on this frequency. What does this mean? We still need to ident the Morse code, doesn't it?...
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4answers
5k views

What kind of assistance can another aircraft provide to an incapacitated pilot?

A recent incident unfolded as follows: An aircraft overflew the planned destination and did not respond to radio calls on any frequency. ATC decided the pilot might be incapacitated and asked another ...
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1answer
129 views

Is there a 'common courtesy' distance that should be complied with when initiating contact with ATC for class D airspace?

Some background: I'm a student pilot preparing for an upcoming stage check involving XC diversions and have been trying to visualize different scenarios of what I'd need to do when diverting. One case ...
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2answers
5k views

Should I contact ATC if I don't have a transponder?

The flight school I usually rent from is under the shelf of class C airspace. If you're going out to a practice area, the standard procedure is to contact approach control and get a squawk code, so ...
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4answers
243 views

Can ADS-B used for voice communications?

Everyone knows the radio communications doesnt sound great altough they work perfectly. But can the brand new ADS-B communications be used for carrying audio signal? Would it be clearer? The ADS-B ...
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8answers
15k views

Is it possible to use normal headphones for passengers in a light aircraft?

I'm just finishing up my private license and am looking forward to taking some friends up in a Cessna 172. I've invested in a nice aviation headset for myself, but, as none of my friends are pilots, ...
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3answers
926 views

How does ATC direct aircraft on ground from the parking to the runway?

For medium size airports, ATC will direct aircraft with a single message like this "Taxi to runway 29 via Papa, Sierra". I was wondering if it was the same thing for bigger airports (like ...

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