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sensors Mode-S transponder

A77077

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N579GJ · BOMBARDIER Regional Jet CRJ-700 · operated by UNITED AIRLINES INC

Hex
A77077
Octal
51670167
Decimal
10,973,303
Country
US
Tail
N579GJ
Type
CRJ7
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
717
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S A77077.

Country allocation

The ICAO 24-bit address A77077 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
GJS4457 - 10 2026-07-20
GJS4446 GoJet Airlines 10 2026-07-20
GJS4442 - 10 2026-06-21
GJS4184 - 8 2026-07-20
GJS4180 - 8 2026-07-19
GJS4603 GoJet Airlines 7 2026-07-25
GJS4565 - 7 2026-07-05
GJS4486 - 7 2026-07-19
GJS4432 GoJet Airlines 7 2026-05-30
GJS4429 - 7 2026-07-17
GJS4427 - 7 2026-07-04
GJS4194 GoJet Airlines 7 2026-07-23
GJS4191 GoJet Airlines 7 2026-07-22
GJS4174 GoJet Airlines 7 2026-05-30
GJS4604 GoJet Airlines 6 2026-05-26
GJS4585 - 6 2026-06-26
GJS4583 - 6 2026-07-18
GJS4556 - 6 2026-07-17
GJS4528 - 6 2026-07-03
GJS4451 GoJet Airlines 6 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GJS4602 EWR → DCA Jul 26, 19:35 UTCJul 26, 20:10 UTC35m
2026-07-26 GJS4513 SAV → EWR Jul 26, 18:25 UTCJul 26, 18:55 UTC30m
2026-07-26 GJS4517 DCA → EWR Jul 26, 15:25 UTCJul 26, 16:15 UTC50m
2026-07-26 GJS4517 DCA → EWR Jul 26, 15:36 UTCJul 26, 16:02 UTC26m
2026-07-25 GJS4573 LEX → ORD Jul 25, 23:50 UTCJul 26, 01:30 UTC1h 40m
2026-07-25 GJS4574 ORD → YOW Jul 25, 20:25 UTCJul 25, 21:50 UTC1h 25m
2026-07-25 GJS4436 IAD → PWM Jul 25, 18:00 UTCJul 25, 19:05 UTC1h 5m
2026-07-25 GJS4453 ORF → EWR Jul 25, 15:50 UTCJul 25, 16:30 UTC40m
2026-07-25 GJS4594 ORD → GRB Jul 25, 14:05 UTCJul 25, 14:45 UTC40m
2026-07-25 GJS4440 EWR → ITH Jul 25, 11:50 UTCJul 25, 12:07 UTC17m
2026-07-25 GJS4603 MSN → ORD Jul 25, 03:25 UTCJul 25, 03:55 UTC30m
2026-07-24 GJS4530 ORD → SGF Jul 24, 21:50 UTCJul 24, 23:10 UTC1h 20m
2026-07-24 GJS4542 ORD → LIT Jul 24, 19:35 UTCJul 24, 20:35 UTC1h 0m
2026-07-24 GJS4410 IAD → LGA Jul 24, 16:25 UTCJul 24, 17:45 UTC1h 20m
2026-07-24 GJS4512 STL → EWR Jul 24, 14:15 UTCJul 24, 15:30 UTC1h 15m
2026-07-24 GJS4496 DTW → EWR Jul 24, 10:35 UTCJul 24, 12:10 UTC1h 35m
2026-07-24 GJS4496 DTW → EWR Jul 24, 10:40 UTCJul 24, 12:06 UTC1h 26m
2026-07-24 GJS4478 IAD → LGA Jul 24, 01:50 UTCJul 24, 03:20 UTC1h 30m
2026-07-23 GJS4603 MSN → ORD Jul 23, 23:25 UTCJul 23, 23:55 UTC30m
2026-07-23 GJS4194 EWR → DCA Jul 23, 21:35 UTCJul 23, 22:05 UTC30m
2026-07-23 GJS4194 EWR → DCA Jul 23, 21:34 UTCJul 23, 22:01 UTC27m
2026-07-23 GJS4597 ORD → ROA Jul 23, 19:45 UTCJul 23, 20:15 UTC30m
2026-07-23 GJS4598 ORD → ROA Jul 23, 18:00 UTCJul 23, 18:30 UTC30m
2026-07-23 GJS4470 - Jul 23, 14:25 UTCJul 23, 15:25 UTC1h 0m
2026-07-23 GJS4468 EWR → CLT Jul 23, 03:15 UTCJul 23, 04:00 UTC45m
2026-07-22 GJS4451 EWR → GSO Jul 22, 21:50 UTCJul 22, 23:40 UTC1h 50m
2026-07-22 GJS4619 STL → ORD Jul 22, 19:20 UTCJul 22, 20:40 UTC1h 20m
2026-07-22 GJS4189 - Jul 22, 16:00 UTCJul 22, 17:55 UTC1h 55m
2026-07-22 GJS4191 RIC → EWR Jul 22, 13:05 UTCJul 22, 14:45 UTC1h 40m
2026-07-21 GJS4430 DCA → EWR Jul 21, 13:15 UTCJul 21, 14:00 UTC45m
2026-07-21 GJS4437 EWR → PHL Jul 21, 10:51 UTCJul 21, 12:00 UTC1h 9m
2026-07-21 GJS4437 EWR → PHL Jul 21, 11:05 UTCJul 21, 12:05 UTC1h 0m
2026-07-21 GJS4514 - Jul 21, 02:15 UTCJul 21, 03:30 UTC1h 15m
2026-07-21 GJS4514 GSO → EWR Jul 21, 02:19 UTCJul 21, 03:26 UTC1h 7m
2026-07-20 GJS4509 EWR → GSO Jul 20, 22:05 UTCJul 20, 23:15 UTC1h 10m
2026-07-20 GJS4608 - Jul 20, 18:40 UTCJul 20, 19:55 UTC1h 15m
2026-07-20 GJS4489 EWR → DCA Jul 20, 16:25 UTCJul 20, 17:25 UTC1h 0m
2026-07-20 GJS4184 DCA → EWR Jul 20, 14:25 UTCJul 20, 15:05 UTC40m
2026-07-20 GJS4184 DCA → EWR Jul 20, 14:21 UTCJul 20, 15:13 UTC52m
2026-07-20 GJS4446 DCA → EWR Jul 20, 12:35 UTCJul 20, 13:20 UTC45m
2026-07-20 GJS4446 DCA → EWR Jul 20, 12:30 UTCJul 20, 13:20 UTC50m
2026-07-20 GJS4167 - Jul 20, 10:05 UTCJul 20, 10:40 UTC35m
2026-07-20 GJS4167 DCA → EWR Jul 20, 10:17 UTCJul 20, 10:40 UTC23m
2026-07-20 GJS4457 EWR → DCA Jul 20, 01:54 UTCJul 20, 03:08 UTC1h 14m
2026-07-20 GJS4457 EWR → DCA Jul 20, 02:15 UTCJul 20, 03:10 UTC55m
2026-07-19 GJS4180 DCA → EWR Jul 19, 22:50 UTCJul 20, 00:20 UTC1h 30m
2026-07-19 GJS4486 EWR → DCA Jul 19, 20:00 UTCJul 19, 20:45 UTC45m
2026-07-19 GJS4413 DCA → EWR Jul 19, 12:50 UTCJul 19, 13:45 UTC55m
2026-07-19 GJS4413 DCA → EWR Jul 19, 11:51 UTCJul 19, 14:28 UTC2h 37m
2026-07-18 GJS4465 - Jul 18, 22:40 UTCJul 19, 00:00 UTC1h 20m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N579GJ page for operator, model, and routing details .

Mode-S A77077 frequently asked

What is Mode-S code A77077?
A77077 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N579GJ.
Where is Mode-S A77077 registered?
Mode-S code A77077 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A77077 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A77077, octal 51670167, decimal 10,973,303.
What flights does A77077 operate?
Mode-S A77077 has broadcast 20 distinct callsigns, including GJS4457, GJS4446, GJS4442, GJS4184, GJS4180.