What is the purpose of squawking 7777?
$begingroup$
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 5 hours ago
PhericPheric
1389
$endgroup$
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 5 hours ago
PhericPheric
1389
$endgroup$
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 5 hours ago
PhericPheric
1389
$endgroup$
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 5 hours ago
PhericPheric
1389
asked 5 hours ago
PhericPheric
1389
edited 5 hours ago
Pheric
asked 5 hours ago
PhericPheric
1389
asked 5 hours ago
PhericPheric
1389
asked 5 hours ago
PhericPheric
1389
1389
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 3 hours ago
Ryan Mortensen
3,195635
answered 5 hours ago
blackswanblackswan
442
$endgroup$
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
3 hours ago
2
$begingroup$
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
3 hours ago
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
38 mins ago
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 59 mins ago
PondlifePondlife
51.1k8138284
$endgroup$
add a comment |
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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 3 hours ago
Ryan Mortensen
3,195635
answered 5 hours ago
blackswanblackswan
442
$endgroup$
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
3 hours ago
2
$begingroup$
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
3 hours ago
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
38 mins ago
add a 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 3 hours ago
Ryan Mortensen
3,195635
answered 5 hours ago
blackswanblackswan
442
$endgroup$
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
3 hours ago
2
$begingroup$
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
3 hours ago
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
38 mins ago
add a 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 3 hours ago
Ryan Mortensen
3,195635
answered 5 hours ago
blackswanblackswan
442
$endgroup$
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 3 hours ago
Ryan Mortensen
3,195635
answered 5 hours ago
blackswanblackswan
442
edited 3 hours ago
Ryan Mortensen
3,195635
edited 3 hours ago
Ryan Mortensen
3,195635
edited 3 hours ago
Ryan Mortensen
3,195635
3,195635
answered 5 hours ago
blackswanblackswan
442
answered 5 hours ago
blackswanblackswan
442
answered 5 hours ago
blackswanblackswan
442
442
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
3 hours ago
2
$begingroup$
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
3 hours ago
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
38 mins ago
add a comment |
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
3 hours ago
2
$begingroup$
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
3 hours ago
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
38 mins ago
1
1
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
3 hours ago
$begingroup$
Why the downvotes? This is correct.
$endgroup$
– pericynthion
3 hours ago
2
2
$begingroup$
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
3 hours ago
$begingroup$
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
3 hours ago
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
38 mins ago
$begingroup$
@RyanMortensen good thing you didn't get intercepted in the last 10 years :)
$endgroup$
– pericynthion
38 mins ago
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 59 mins ago
PondlifePondlife
51.1k8138284
$endgroup$
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 59 mins ago
PondlifePondlife
51.1k8138284
$endgroup$
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 59 mins ago
PondlifePondlife
51.1k8138284
$endgroup$
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 59 mins ago
PondlifePondlife
51.1k8138284
answered 59 mins ago
PondlifePondlife
51.1k8138284
answered 59 mins ago
PondlifePondlife
51.1k8138284
answered 59 mins ago
PondlifePondlife
51.1k8138284
51.1k8138284
add a comment |
add a comment |
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