A Look At The World Of Squawk Codes And Their Meanings
Ойын-сауық
If you're interested in aviation, or like listening to inflight ATC communications, you've likely heard of 'squawk codes.' These are four-digit codes given by ATC to all aircraft in the airspace for communication purposes. Today let’s take a look at their usage and the meaning of various codes…
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I remember Squawk 1232 which was Given to a BA Flight from Cape Town to London. It was based off the Rugby World Cup final result, 12-32 to South Africa
Aircraft not using ATC service squawk a non-discrete beacon code (such as 1200). They will show up on a controller's display as a selected symbol such as a triangle of square, etc. The type of aircraft and identification will be unknown, The 'secondary' radar (the one that interrogates aircraft transponders) will process the code and pass along it's reported altitude to the ATC software. It will then be displayed on a controller's radar display as the symbol and the data tag will include the received altitude (if the aircraft has that equipment). The controller will not be talking to that aircraft crew but will be able to advise other pilots that he is controlling of the presence of the unknown aircraft. I.E., Delta205, traffic 10 o'clock six miles, southbound, altitude indicates 4,500 unverified'. If it appears the aircraft will come too close, the controller will move the plane he is controlling away by turning, or altitude restriction.
I actually squawked 76 once. Quite an eventful flight.
Captain Joe taught me the emergency squawk codes: 7-5, man with a knife (Hijack) 7-6, I need my radio fixed (Radio failure) 7-7, falling from heaven (Emergency)
Almost about 30 years back, we were taught to remember the emergency codes as HRD The HR Dept is one always in the limelight in any company for all sorts of reasons. H- Hijack 7500 R - RT failure 7600 D - Distress (emergency) 7700
I know all about squawk codes. Nice, simple explanation. I haven't had to use any of the emergency codes yet thankfully!
No. I had no idea about such codes. Thanks @Simple Flying for making a video on this topic.
Very excellent👍. I know of those 3 squawk codes
Excellent information.
Forty years ago when I started in ATC aircraft transponders would transmit the squawk code, altitude and, when requested by the controller, an ‘ident’ signal. As stated in the video, only digits 0-7 were allowed which meant a total of 4096 discrete squawks were available, not nearly enough to cover all flights in the world even back then. Certain blocks of codes were allocated to different air traffic control centres or groups of centres so an aircraft would be allocated a new squawk when it entered a new region. A controller’s radar display would convert the four digit squawk to the aircraft’s callsign or registration which greatly enhanced a controller’s awareness of which aircraft was which. The altitude was shown as a three digit Flight Level (eg 100 for 10,000ft or FL100) and when the pilot pressed the ‘ident’ button the radar symbol would flash for a few seconds which enabled the controller to positively identify an aircraft. Nowadays transponders are far more complex and transmit much more information which is why you can track aircraft on your phone using number of different apps.
@osasunaitor
Жыл бұрын
Interesting explanation, thanks! Why was the digit limit set at 7 instead of 9?
@egpx
Жыл бұрын
@@osasunaitor I suspect it was something to do with the limitation of the electronics back when it was being developed. However, I was never technically savvy enough to find out!
Does anyone know what song is played starting at the beginning of the video. Thankyou!
Thanks.
4096 total transponder codes. . . using octal digits for 0 to 7. You forgot the default VFR Squawk 1200
How does ATC assign squawk codes and are they unique to each aircraft. Example if 2 aircrafts in the same airspace have the same emergency onboard,would both aircrafts be assigned squawk 7700?
@SumSouuthernSugar
Жыл бұрын
Any beacon code that ends in digits '00' is considered a non-discrete beacon code. ATC would not generally assign those codes, but the radar will receive a report for any/all aircraft squawking 7600, 7700, etc. It does not matter how many are using that code. Could be 1, could be 20. The non discrete codes are not attached to a particular aircraft identity. If an emergency aircraft called ATC for assistance the controller would assign the aircraft a discrete code, such as 2563, or whatever, and the computer would then associate that target with the aircraft's given id.
Cool, video, thanks. Here's an idea for another - what are ATC nicknames, such as Brickyard and Speedbird
@erich930
Жыл бұрын
Well, quick answer is they are callsigns for airlines. Many airlines just use their name, like American, United, Lufthansa, etc... Others, like British Airways and Republic Airways do not simply use their names. British Airways' callsign, Speedbird, is the name of their very well known old logo. Republic Airways' callsign, Brickyard, pays homage to a very famous landmark of their home base of Indianapolis, Indiana.
@magical_catgirl
Жыл бұрын
They are ICAO assigned call signs for a given airline. Most airlines get a callsign that is in some way related to the companies name. Others don't, often because a callsign better related to the airline name is unavailable, or they are using something related to the airlines history or logo. Jetstar Japan uses ORANGE LINER and Aer Lingus uses SHAMROCK. ICAO also assigns 3 character airline codes and 4 character airport codes which are used for ATC and flight planning. Travelers would be more familiar with the IATA 2 character airline and 3 character airport codes.
Finally
Coool
But what I want to know is how does ATC give the squawk codes? Are they randomly given or are pre programmed
@pumpkin79
Жыл бұрын
Same
@SumSouuthernSugar
Жыл бұрын
They are assigned by ATC software and attached to the aircraft's flight data. The software keeps a list of codes in use so as to not duplicate assignments.
I am aware of squawk codes, but only due to my father’s flying experiences. I was made well-aware at an early age that 7700 is what to use if the ol’ man becomes incapacitated for whatever reason. Because he flew for American Airlines, he was a tea-totaler, and alcohol was never an issue while he flew.
I wasn't 100% sure how they were used
Which aircraft is better a320 neo or max 8
@tomstravels520
Жыл бұрын
Well one of them hasn’t been grounded due to major design flaws that led to crashes
@nishitanand2468
Жыл бұрын
@@tomstravels520 i am actually talking about the efficiency
@tomstravels520
Жыл бұрын
@@nishitanand2468 that depends how you measure it because different ways will give you different answers. One is more efficient based on the amount of fuel it consumes only but the other is more efficient based on per passenger per mile
What Abot 121.5?
@mattmatt516
Жыл бұрын
That's a radio frequency, not a squak code. It's the VHF Emergency frequency (Guard)
@envitech02
Жыл бұрын
That's Guard frequency
@BlueAirways
Жыл бұрын
@@mattmatt516 oh
@BlueAirways
Жыл бұрын
@@envitech02 oh
@BlueAirways
Жыл бұрын
@Boeing 737 MAX 8 Ok
Without the transponder controller have to rely on primary radar. Which is very sparse on information if the controller even has a set.
Why only 1 through 7?
I was watching this video, logged onto FR24 and found 3x 7700 aircraft lol
It’s slightly misleading to civilians to explain that squawk codes are a method of communication. Squawk codes are a random series of 4 numbers assigned by ATC computers to a given IFR flight. The 4 digit code is put into the transponder on the flight deck. When the flight becomes airborne, ground radar scans or interrogates the air searching for a return signal from the airborne transponder. Once received the signal shows up on the radar controllers screen and identifies the aircraft by flight number, speed and type aircraft. The controller uses this information to give instructions or guidance to the flight crew. The information is transmitted electronically- limiting or eliminating the need for constant verbal communication about location and speed. As others have noted, there are special 4 digit codes for emergency, hijacking and loss of radio communication.
7600 … aircraft has lost communications not only with tower but also approach and ACC ???
@MalaysianAviator737-8
Жыл бұрын
Yes
Of course, the only code unavailable to aviation enthusiasts is 7500 as any hijack situation remains under wraps, quite rightfully.
2024 air Moana 7700
What about 6969?
Wow the narrator hides his true accent well
Hey guys - thanks for making 7500 public so that when someone breaks into my cockpit they now know the one thing that keeps me and my crew safe. Excellent thinking... anything for likes these days.