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Questions tagged [call-sign]

Questions about the callsigns that aircraft use to identify themselves when communicating over the radio or other systems.

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35
votes
1answer
3k views

How are duplicate call signs dealt with?

Many airlines (at least here in the U.S.) have flight numbers that use different aircraft for different legs of the flight. For example, Delta 158 uses a 747-400 from Incheon International in Seoul to ...
15
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5answers
9k views

Why are some ATC call signs different than the flight number?

When listening to air control traffic, or watching flights on flightradar24.com, some flights show up with ATC call signs (as transmitted on ADS-B) that do not match the flight number as they usually ...
9
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1answer
3k views

How is an airline call sign assigned?

Commercial aircraft are identified on the radio with an airline call sign and their flight number. The answer on this related question mentions: the telephony designator of the aircraft operating ...
12
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1answer
781 views

Can a U.S. President have a non-government owned aircraft that would routinely be given the call sign AF1?

Can a US president use a personally owned jet with the call sign AF1? Would the Air Force be obligated to add security and defense measure to this aircraft if the president refused to fly in the VC-25?...
11
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2answers
1k views

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 ...
7
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2answers
951 views

What would they call the US President's personal plane?

Air Force One is called that because it is operated by the Air Force. The President's personal helicopter is called Marine One because it is operated by the Marines. What would the President's ...
3
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4answers
702 views

Do flights of a specific callsign always depart and arrive at the same airports?

I've been doing some research using flight data, but I'm not particularly versed with aviation. From a quick look, it appears that, say, a flight with callsign SAA203 will always be departing from ...
26
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4answers
6k views

Is there any specific reason why Delta Air Lines doesn't have its own callsign?

Many airlines have their own callsigns for use over the radio. A British Airways plane is called "Speedbird", US Airways was "Cactus", etc. So why doesn't Delta Air Lines do the same? It would seem to ...
5
votes
1answer
854 views

What are the FAA requirements for when to use an airline call sign & flight number versus the aircraft registration number?

Is there any FAA guidance which specifies when a call sign & flight number or registration number must be used for Part 91 & 135 operations? I am familiar with the guidance on how to obtain ...
11
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3answers
9k views

What are the guidelines for call signs for aircraft dealing with US ATC?

Suppose a general aviation aircraft is operating VFR under part 91. When they call ATC they'd normally use their tail number as the call sign. Something like "November 1-2-3 Foxtrot Uniform." What if ...
11
votes
1answer
630 views

Do any other nations have an equivalent of the “Air Force One” call sign?

Air Force One is the official air traffic control call sign for a United States Air Force aircraft carrying the President of the United States. - Wikipedia Do any other nations have an equivalent ...
6
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0answers
313 views

Why do some airlines have different flight numbers for IATA and ICAO? [duplicate]

Most of the time when I see flights on either flightradar24 or flightaware it doesn't matter whether you use the 2-digit IATA code or the 3-digit ICAO code, the flight number is the same, i.e. a ...
5
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3answers
2k views

Are en-route ATC callsigns standardized?

I've seen different callsigns for en-route air traffic control, including Center, Radar, and Control (and Radio?). I suspect the only difference is the geographic location - Center in the U.S. (e.g. ...
2
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0answers
157 views

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 "...
1
vote
1answer
367 views

Where to find the callsigns of the en route controllers?

I am looking for the callsigns of ATC upper information region (UIR) controllers on a flight from Frankfurt EDDF to Seattle KSEA. According to the flight plan, the UIRs crossed are: EDDV (Hannover) ...