What is the purpose of squawking 7777?
Clash Royale CLAN TAG#URR8PPP
$begingroup$
Aircraft use transponders to communicate to ATC their position and status. Some squawk codes are reserved, such as 7700 (emergency), 7600 (communication failure), 7500 (hijacking), 1202 (glider), 1200 (VFR), etc. One of these, 7777, is apparently used for "military interception." What does this mean in the United States? Under what circumstances would it be used on a civilian / military aircraft?
usa transponder
asked Feb 9 at 21:07
PhericPheric
16811
$endgroup$
add a comment |
$begingroup$
Aircraft use transponders to communicate to ATC their position and status. Some squawk codes are reserved, such as 7700 (emergency), 7600 (communication failure), 7500 (hijacking), 1202 (glider), 1200 (VFR), etc. One of these, 7777, is apparently used for "military interception." What does this mean in the United States? Under what circumstances would it be used on a civilian / military aircraft?
usa transponder
asked Feb 9 at 21:07
PhericPheric
16811
$endgroup$
add a comment |
$begingroup$
Aircraft use transponders to communicate to ATC their position and status. Some squawk codes are reserved, such as 7700 (emergency), 7600 (communication failure), 7500 (hijacking), 1202 (glider), 1200 (VFR), etc. One of these, 7777, is apparently used for "military interception." What does this mean in the United States? Under what circumstances would it be used on a civilian / military aircraft?
usa transponder
asked Feb 9 at 21:07
PhericPheric
16811
$endgroup$
Aircraft use transponders to communicate to ATC their position and status. Some squawk codes are reserved, such as 7700 (emergency), 7600 (communication failure), 7500 (hijacking), 1202 (glider), 1200 (VFR), etc. One of these, 7777, is apparently used for "military interception." What does this mean in the United States? Under what circumstances would it be used on a civilian / military aircraft?
usa transponder
usa transponder
asked Feb 9 at 21:07
PhericPheric
16811
asked Feb 9 at 21:07
PhericPheric
16811
edited Feb 9 at 21:44
Pheric
asked Feb 9 at 21:07
PhericPheric
16811
asked Feb 9 at 21:07
PhericPheric
16811
asked Feb 9 at 21:07
PhericPheric
16811
16811
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
$begingroup$
In countries outside of the US, 7777 may be used by test transponders (RABMs) to check correctness of radar stations (BITE). e.g. on top of a mountain.
In the US, it seems that it is used as well on active air defense missions without ATC clearance. This would mean that the interceptor aircraft would change it's squawk to 7777 for the military/civilian air traffic controller to see it properly (if not filtered out on civil radars).
A link to the US intercept procedures is here.
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
answered Feb 9 at 21:28
blackswanblackswan
31624
$endgroup$
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
Feb 9 at 22:58
4
$begingroup$
Yep, I have been wrong for about 10 years now. I would have sworn the craft being intercepted was the squawker of 7777. Edited to add my link to the FAA doc. Deleted my wrong answer, and upvoted this.
$endgroup$
– Ryan Mortensen
Feb 9 at 23:10
2
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
Feb 10 at 2:19
$begingroup$
@pericynthion yeah, I may need to have a chat with some people I have learned it wrong from and spread the knowledge.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:11
$begingroup$
You know, now that I think about it, I bet I was told that by retired Air Force guys who mixed up the roles' codes.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:19
|
show 1 more comment
$begingroup$
According to the AIM 4-1-20(e):
- Under no circumstances should a pilot of a civil aircraft operate the
transponder on Code 7777. This code is reserved for military
interceptor operations.
The ATC orders don't add anything useful and a lot of security procedures are classified, or at least not publicly available on faa.gov. But it seems from that information that a) 7777 is important for interception operations, and b) civilian pilots must not use 7777. That implies that 7777 is reserved for interceptor aircraft, not the aircraft being intercepted.
The FAA's interception instructions for pilots say that intercepted aircraft should squawk 7700.
See this question too.
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
$endgroup$
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
return StackExchange.using("mathjaxEditing", function ()
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
);
);
, "mathjax-editing");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "528"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faviation.stackexchange.com%2fquestions%2f59964%2fwhat-is-the-purpose-of-squawking-7777%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
In countries outside of the US, 7777 may be used by test transponders (RABMs) to check correctness of radar stations (BITE). e.g. on top of a mountain.
In the US, it seems that it is used as well on active air defense missions without ATC clearance. This would mean that the interceptor aircraft would change it's squawk to 7777 for the military/civilian air traffic controller to see it properly (if not filtered out on civil radars).
A link to the US intercept procedures is here.
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
answered Feb 9 at 21:28
blackswanblackswan
31624
$endgroup$
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
Feb 9 at 22:58
4
$begingroup$
Yep, I have been wrong for about 10 years now. I would have sworn the craft being intercepted was the squawker of 7777. Edited to add my link to the FAA doc. Deleted my wrong answer, and upvoted this.
$endgroup$
– Ryan Mortensen
Feb 9 at 23:10
2
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
Feb 10 at 2:19
$begingroup$
@pericynthion yeah, I may need to have a chat with some people I have learned it wrong from and spread the knowledge.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:11
$begingroup$
You know, now that I think about it, I bet I was told that by retired Air Force guys who mixed up the roles' codes.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:19
|
show 1 more comment
$begingroup$
In countries outside of the US, 7777 may be used by test transponders (RABMs) to check correctness of radar stations (BITE). e.g. on top of a mountain.
In the US, it seems that it is used as well on active air defense missions without ATC clearance. This would mean that the interceptor aircraft would change it's squawk to 7777 for the military/civilian air traffic controller to see it properly (if not filtered out on civil radars).
A link to the US intercept procedures is here.
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
answered Feb 9 at 21:28
blackswanblackswan
31624
$endgroup$
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
Feb 9 at 22:58
4
$begingroup$
Yep, I have been wrong for about 10 years now. I would have sworn the craft being intercepted was the squawker of 7777. Edited to add my link to the FAA doc. Deleted my wrong answer, and upvoted this.
$endgroup$
– Ryan Mortensen
Feb 9 at 23:10
2
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
Feb 10 at 2:19
$begingroup$
@pericynthion yeah, I may need to have a chat with some people I have learned it wrong from and spread the knowledge.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:11
$begingroup$
You know, now that I think about it, I bet I was told that by retired Air Force guys who mixed up the roles' codes.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:19
|
show 1 more comment
$begingroup$
In countries outside of the US, 7777 may be used by test transponders (RABMs) to check correctness of radar stations (BITE). e.g. on top of a mountain.
In the US, it seems that it is used as well on active air defense missions without ATC clearance. This would mean that the interceptor aircraft would change it's squawk to 7777 for the military/civilian air traffic controller to see it properly (if not filtered out on civil radars).
A link to the US intercept procedures is here.
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
answered Feb 9 at 21:28
blackswanblackswan
31624
$endgroup$
In countries outside of the US, 7777 may be used by test transponders (RABMs) to check correctness of radar stations (BITE). e.g. on top of a mountain.
In the US, it seems that it is used as well on active air defense missions without ATC clearance. This would mean that the interceptor aircraft would change it's squawk to 7777 for the military/civilian air traffic controller to see it properly (if not filtered out on civil radars).
A link to the US intercept procedures is here.
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
answered Feb 9 at 21:28
blackswanblackswan
31624
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
edited Feb 9 at 23:08
Ryan Mortensen
3,284636
3,284636
answered Feb 9 at 21:28
blackswanblackswan
31624
answered Feb 9 at 21:28
blackswanblackswan
31624
answered Feb 9 at 21:28
blackswanblackswan
31624
31624
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
Feb 9 at 22:58
4
$begingroup$
Yep, I have been wrong for about 10 years now. I would have sworn the craft being intercepted was the squawker of 7777. Edited to add my link to the FAA doc. Deleted my wrong answer, and upvoted this.
$endgroup$
– Ryan Mortensen
Feb 9 at 23:10
2
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
Feb 10 at 2:19
$begingroup$
@pericynthion yeah, I may need to have a chat with some people I have learned it wrong from and spread the knowledge.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:11
$begingroup$
You know, now that I think about it, I bet I was told that by retired Air Force guys who mixed up the roles' codes.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:19
|
show 1 more comment
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
Feb 9 at 22:58
4
$begingroup$
Yep, I have been wrong for about 10 years now. I would have sworn the craft being intercepted was the squawker of 7777. Edited to add my link to the FAA doc. Deleted my wrong answer, and upvoted this.
$endgroup$
– Ryan Mortensen
Feb 9 at 23:10
2
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
Feb 10 at 2:19
$begingroup$
@pericynthion yeah, I may need to have a chat with some people I have learned it wrong from and spread the knowledge.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:11
$begingroup$
You know, now that I think about it, I bet I was told that by retired Air Force guys who mixed up the roles' codes.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:19
1
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
Feb 9 at 22:58
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
Feb 9 at 22:58
4
4
$begingroup$
Yep, I have been wrong for about 10 years now. I would have sworn the craft being intercepted was the squawker of 7777. Edited to add my link to the FAA doc. Deleted my wrong answer, and upvoted this.
$endgroup$
– Ryan Mortensen
Feb 9 at 23:10
$begingroup$
Yep, I have been wrong for about 10 years now. I would have sworn the craft being intercepted was the squawker of 7777. Edited to add my link to the FAA doc. Deleted my wrong answer, and upvoted this.
$endgroup$
– Ryan Mortensen
Feb 9 at 23:10
2
2
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
Feb 10 at 2:19
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
Feb 10 at 2:19
$begingroup$
@pericynthion yeah, I may need to have a chat with some people I have learned it wrong from and spread the knowledge.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:11
$begingroup$
@pericynthion yeah, I may need to have a chat with some people I have learned it wrong from and spread the knowledge.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:11
$begingroup$
You know, now that I think about it, I bet I was told that by retired Air Force guys who mixed up the roles' codes.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:19
$begingroup$
You know, now that I think about it, I bet I was told that by retired Air Force guys who mixed up the roles' codes.
$endgroup$
– Ryan Mortensen
Feb 10 at 16:19
|
show 1 more comment
$begingroup$
According to the AIM 4-1-20(e):
- Under no circumstances should a pilot of a civil aircraft operate the
transponder on Code 7777. This code is reserved for military
interceptor operations.
The ATC orders don't add anything useful and a lot of security procedures are classified, or at least not publicly available on faa.gov. But it seems from that information that a) 7777 is important for interception operations, and b) civilian pilots must not use 7777. That implies that 7777 is reserved for interceptor aircraft, not the aircraft being intercepted.
The FAA's interception instructions for pilots say that intercepted aircraft should squawk 7700.
See this question too.
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
$endgroup$
add a comment |
$begingroup$
According to the AIM 4-1-20(e):
- Under no circumstances should a pilot of a civil aircraft operate the
transponder on Code 7777. This code is reserved for military
interceptor operations.
The ATC orders don't add anything useful and a lot of security procedures are classified, or at least not publicly available on faa.gov. But it seems from that information that a) 7777 is important for interception operations, and b) civilian pilots must not use 7777. That implies that 7777 is reserved for interceptor aircraft, not the aircraft being intercepted.
The FAA's interception instructions for pilots say that intercepted aircraft should squawk 7700.
See this question too.
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
$endgroup$
add a comment |
$begingroup$
According to the AIM 4-1-20(e):
- Under no circumstances should a pilot of a civil aircraft operate the
transponder on Code 7777. This code is reserved for military
interceptor operations.
The ATC orders don't add anything useful and a lot of security procedures are classified, or at least not publicly available on faa.gov. But it seems from that information that a) 7777 is important for interception operations, and b) civilian pilots must not use 7777. That implies that 7777 is reserved for interceptor aircraft, not the aircraft being intercepted.
The FAA's interception instructions for pilots say that intercepted aircraft should squawk 7700.
See this question too.
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
$endgroup$
According to the AIM 4-1-20(e):
- Under no circumstances should a pilot of a civil aircraft operate the
transponder on Code 7777. This code is reserved for military
interceptor operations.
The ATC orders don't add anything useful and a lot of security procedures are classified, or at least not publicly available on faa.gov. But it seems from that information that a) 7777 is important for interception operations, and b) civilian pilots must not use 7777. That implies that 7777 is reserved for interceptor aircraft, not the aircraft being intercepted.
The FAA's interception instructions for pilots say that intercepted aircraft should squawk 7700.
See this question too.
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
answered Feb 10 at 1:58
PondlifePondlife
51.6k9139285
51.6k9139285
add a comment |
add a comment |
Thanks for contributing an answer to Aviation Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faviation.stackexchange.com%2fquestions%2f59964%2fwhat-is-the-purpose-of-squawking-7777%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown