Questions tagged [radio-communications]

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

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11 views

Is there a FAR reference for the IFR required reports listed in the AIM 5-3-3?

Section 5-3-3 of the AIM lists "Additional Reports" that "should" be made on an IFR flight. There are 9 of them in a radar environment and 2 more in non-radar. The only reference ...
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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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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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Can the guard frequency be used by non-aircraft / general public?

I am part of an organisation which regularly flies high-powered rockets, and thus files a TFR when we do so prohibiting aircraft from the area where we launch these rockets up to 10,000 ft. This TFR ...
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1answer
149 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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280 views

What is the procedure to change an airport's published CTAF?

Similar to the problem experienced by the poster at Why do so many airports have the same CTAF frequency?, I have noticed that my CTAF is crowded. Not with local pilots, but with operations as much as ...
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60 views

Do the soaring and/or ballooning communities in the US recommend 123.5 as the preferred frequency for air-to-air and air-to-ground use?

Does the soaring community (e.g. the Soaring Society of America) or the ballooning community in the US recommend 123.5 as the preferred frequency for air-to-air and air-to-ground use by glider pilots ...
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59 views

Does the FAA or FCC recommend 123.5 as the preferred frequency for air-to-air and air-to-ground use by glider pilots or balloon pilots?

Does the FAA or FCC recommend 123.5 as the preferred frequency for air-to-air and air-to-ground use by glider pilots or balloon pilots speaking to other glider or balloon pilots or ground support crew,...
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206 views

Why did the Soviets not make radio contact with Korean 007?

I was reading recently about the shootdown of Korean 007 and it is clear that it was very tense times between the American and Soviet governments. The one point which struck me as weird throught the ...
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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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94 views

How to interpret ATIS ground communication

Let's say I have the following ground communication from ATIS: ...
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823 views

Why (and when) did people start meowing on guard frequency?

meow Some love it, some hate it, but we've all heard it - that's right, pilots meowing on guard frequency (121.5). When did it start? Does (or did) it represent something? Does ATC ever do it?
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586 views

Why do so many airports have the same CTAF frequency?

In the United States, many non-towered airports have CTAF frequencies (often shared with UNICOM as well) that tend to overlap with various other airports within a 50-100 nm radius, at least in more ...
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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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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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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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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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871 views

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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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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1answer
332 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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380 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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144 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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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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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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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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339 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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170 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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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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306 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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144 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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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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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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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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161 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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How can the 3M22 Zircon receive commands at high speeds?

According to its Wikipedia article, the scramjet-powered 3M22 Zircon missile is capable of achieving speeds of up to Mach 9, at which a plasma may be created around the missile. The article further ...
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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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How do I know how to describe my position on the airport when I contact ATC?

When asking for taxi clearance, a pilot must include his location when contacting ATC. However, I'm not quite sure exactly how to state your position in the airport. For example, I've heard some ...
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66 views

What are the communication procedures for flying from one Class D airspace directly into another Class D airspace?

What is the communication procedure for descending through Class D airspace to land at a different controlled airport in a separate class D airspace that is directly next to it, such as Long Beach (...
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198 views

What is (or was) the "international frequency"?

I have recently read a book about Douglas BADER. This pilot has lost his legs (because of accident in 1931) but after (thanks to his single-mindedness) he takes up the "broomstick" again and became a ...
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183 views

Does pilot-controlled lighting work if you are interrupted by another voice transmission?

This question is in the context of pilot-activated runway lighting, which involves clicking the microphone e.g. 7 times to turn on the lights at night. I was wondering what happens when you are ...
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334 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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Can a VFR flight reference a waypoint in communication?

Can a VFR flight reference an IFR Waypoint when communicating position to tower or centers? For example: “N1234 at 3500’ at FERMY, request blah blah blah?” Thanks RHD! ****Adding additional ...
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132 views

What exactly are these frequency uses mentioned in the FAA's advisory circular on VHF use?

The FAA's document AC 90-50, (currently AC 90-50D) sets forth how the aviation communications frequencies (118.000-136.975) are allocated in the United States. Many of the assignment designations are ...
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What is the 'Deconfliction Service'?

High Speed Flights 2.36 - When receiving an ATS surveillance service, certain ex-military aircraft types have been granted a CAA exemption from the Air Navigation Order requirement to fly at an ...
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What is the purpose of using 8.33 kHz instead of 25 kHz frequency spacing?

What is the purpose of using 8.33 kHz instead of 25 kHz frequency spacing?
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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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What are some alternate methods of communication with aircraft (specifically small drones)?

I've been thinking about his alot but I've yet to find an answer. Most of the time drones use radio, wi-fi, GPS and Bluetooth signals to communicate with their controllers but all of these methods ...
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218 views

How do you write 'to', 'then', or 'via' in IFR clearances shorthand symbols?

Although there are NO restrictions about the usage of shorthand symbols, still it would be useful when I fly with another person together, so I studied those symbols and got some doubt points. If ...
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525 views

What terminologies are used when ATC instructs a pilot to stop or proceed with his transmission?

If some pilot forgets to release his mic button, distracting everyone on the frequency, what terminology can be used by an ATC to stop it? And if another pilot stop transmitting his message until the ...
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Is there a specific reason Delta Airlines is allowed to have a call sign that's also code word in the NATO phonetic alphabet?

This is a followup to Is there any specific reason why Delta Air Lines doesn't have its own callsign? I was... "helpfully" informed that, um, actually, Delta Airlines does have its own callsign, it's "...

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