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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 8h ago
Flights observed
629
Distinct callsigns
20
Country
US
Last broadcast
8h ago

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
GJS4442 - 10 2026-06-21
GJS4457 GoJet Airlines 8 2026-05-31
GJS4446 - 8 2026-06-21
GJS4565 - 7 2026-07-05
GJS4432 GoJet Airlines 7 2026-05-30
GJS4427 - 7 2026-07-04
GJS4180 - 7 2026-06-19
GJS4174 GoJet Airlines 7 2026-05-30
GJS4604 GoJet Airlines 6 2026-05-26
GJS4585 - 6 2026-06-26
GJS4528 - 6 2026-07-03
GJS4486 - 6 2026-06-18
GJS4429 - 6 2026-07-13
GJS4191 - 6 2026-06-21
GJS4186 GoJet Airlines 6 2026-05-08
GJS4184 GoJet Airlines 6 2026-05-28
GJS4168 - 6 2026-06-24
GJS4591 - 5 2026-07-04
GJS4556 - 5 2026-07-13
GJS4549 GoJet Airlines 5 2026-05-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GJS4563 - Jul 14, 00:05 UTCJul 14, 01:10 UTC1h 5m
2026-07-13 GJS4519 - Jul 13, 22:00 UTCJul 13, 22:50 UTC50m
2026-07-13 GJS4429 - Jul 13, 20:05 UTCJul 13, 20:35 UTC30m
2026-07-13 GJS4556 - Jul 13, 17:50 UTCJul 13, 18:10 UTC20m
2026-07-13 GJS4407 - Jul 13, 14:30 UTCJul 13, 15:50 UTC1h 20m
2026-07-13 GJS4407 CHA → ORD Jul 13, 14:43 UTCJul 13, 15:39 UTC56m
2026-07-13 GJS4596 - Jul 13, 12:05 UTCJul 13, 13:10 UTC1h 5m
2026-07-13 GJS4415 DAY → ORD Jul 13, 09:50 UTCJul 13, 10:45 UTC55m
2026-07-12 GJS4484 - Jul 12, 23:10 UTCJul 12, 23:50 UTC40m
2026-07-12 GJS4533 - Jul 12, 21:15 UTCJul 12, 21:40 UTC25m
2026-07-12 GJS4488 - Jul 12, 19:35 UTCJul 12, 20:05 UTC30m
2026-07-12 GJS4410 - Jul 12, 16:25 UTCJul 12, 17:45 UTC1h 20m
2026-07-12 GJS4512 - Jul 12, 14:05 UTCJul 12, 15:05 UTC1h 0m
2026-07-11 GJS3377 FSD → ORD Jul 11, 18:50 UTCJul 11, 20:10 UTC1h 20m
2026-07-11 GJS3377 FSD → ORD Jul 11, 18:46 UTCJul 11, 20:14 UTC1h 28m
2026-07-11 GJS3370 ORD → FSD Jul 11, 16:45 UTCJul 11, 17:50 UTC1h 5m
2026-07-11 GJS3370 ORD → FSD Jul 11, 16:41 UTCJul 11, 17:50 UTC1h 9m
2026-07-10 GJS4400 - Jul 10, 23:45 UTCJul 10, 23:50 UTC5m
2026-07-10 GJS4400 - Jul 10, 22:00 UTCJul 10, 23:50 UTC1h 50m
2026-07-10 GJS4400 CAE → ORD Jul 10, 22:00 UTCJul 10, 23:30 UTC1h 30m
2026-07-10 GJS4523 - Jul 10, 19:10 UTCJul 10, 20:40 UTC1h 30m
2026-07-10 GJS4193 - Jul 10, 15:40 UTCJul 10, 16:20 UTC40m
2026-07-10 GJS4537 - Jul 10, 14:15 UTCJul 10, 14:45 UTC30m
2026-07-10 GJS4397 - Jul 10, 11:55 UTCJul 10, 12:40 UTC45m
2026-07-10 GJS4397 GRB → ORD Jul 10, 11:51 UTCJul 10, 12:30 UTC39m
2026-07-10 GJS4610 - Jul 10, 04:05 UTCJul 10, 04:40 UTC35m
2026-07-10 GJS4610 ORD → GRB Jul 10, 04:15 UTCJul 10, 04:37 UTC22m
2026-07-10 GJS4177 LGA → IAD Jul 10, 00:20 UTCJul 10, 01:20 UTC1h 0m
2026-07-10 GJS4177 LGA → IAD Jul 10, 00:30 UTCJul 10, 01:08 UTC38m
2026-07-09 GJS4445 - Jul 9, 23:00 UTCJul 9, 23:40 UTC40m
2026-07-09 GJS4429 - Jul 9, 19:45 UTCJul 9, 20:20 UTC35m
2026-07-09 GJS4556 - Jul 9, 18:10 UTCJul 9, 18:35 UTC25m
2026-07-09 GJS4556 ORD → MLI Jul 9, 18:16 UTCJul 9, 18:37 UTC21m
2026-07-09 GJS4583 GRR → ORD Jul 9, 15:50 UTCJul 9, 16:50 UTC1h 0m
2026-07-09 GJS4583 GRR → ORD Jul 9, 15:52 UTCJul 9, 16:09 UTC17m
2026-07-09 GJS4592 ORD → GRR Jul 9, 11:25 UTCJul 9, 12:00 UTC35m
2026-07-09 GJS4165 STL → ORD Jul 9, 00:15 UTCJul 9, 01:15 UTC1h 0m
2026-07-08 GJS4416 - Jul 8, 21:15 UTCJul 8, 22:00 UTC45m
2026-07-08 GJS4175 ABE → ORD Jul 8, 18:10 UTCJul 8, 19:45 UTC1h 35m
2026-07-08 GJS4175 ABE → ORD Jul 8, 18:08 UTCJul 8, 19:30 UTC1h 22m
2026-07-08 GJS4461 - Jul 8, 15:15 UTCJul 8, 16:45 UTC1h 30m
2026-07-08 GJS4423 STL → ORD Jul 8, 12:40 UTCJul 8, 13:30 UTC50m
2026-07-07 GJS4412 - Jul 7, 00:20 UTCJul 7, 01:00 UTC40m
2026-07-06 GJS4533 - Jul 6, 21:15 UTCJul 6, 21:45 UTC30m
2026-07-06 GJS4488 - Jul 6, 19:55 UTCJul 6, 20:20 UTC25m
2026-07-06 GJS4410 - Jul 6, 16:30 UTCJul 6, 17:35 UTC1h 5m
2026-07-06 GJS4512 - Jul 6, 14:00 UTCJul 6, 15:10 UTC1h 10m
2026-07-06 GJS4397 - Jul 6, 11:40 UTCJul 6, 12:25 UTC45m
2026-07-06 GJS4610 - Jul 6, 03:20 UTCJul 6, 03:45 UTC25m
2026-07-06 GJS4610 ORD → GRB Jul 6, 03:30 UTCJul 6, 03:48 UTC18m

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 8h ago.
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 GJS4442, GJS4457, GJS4446, GJS4565, GJS4432.