Apparatus

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sensors Mode-S transponder

A7000A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N550GJ · BOMBARDIER Regional Jet CRJ-700 · operated by UNITED AIRLINES INC

Hex
A7000A
Octal
51600012
Decimal
10,944,522
Country
US
Tail
N550GJ
Type
CRJ7
No current signal · last broadcast 3d ago
Flights observed
655
Distinct callsigns
20
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A7000A.

Country allocation

The ICAO 24-bit address A7000A 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
GJS4392 GoJet Airlines 12 2026-06-19
GJS4517 - 10 2026-07-08
GJS4415 - 9 2026-07-10
GJS4531 - 8 2026-07-06
GJS4508 - 8 2026-06-30
GJS4430 - 8 2026-07-02
GJS4180 - 8 2026-07-04
GJS4523 - 7 2026-06-20
GJS4511 - 7 2026-07-02
GJS4501 - 7 2026-07-07
GJS4468 GoJet Airlines 7 2026-05-29
GJS4448 - 7 2026-07-05
GJS4442 - 7 2026-07-03
GJS4438 GoJet Airlines 7 2026-05-20
GJS4407 GoJet Airlines 7 2026-05-15
GJS4190 GoJet Airlines 7 2026-06-19
GJS4172 - 7 2026-07-01
GJS4601 GoJet Airlines 6 2026-05-29
GJS4581 GoJet Airlines 6 2026-06-03
GJS4529 - 6 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 GJS4386 EWR → RIC Jul 10, 23:25 UTCJul 11, 00:30 UTC1h 5m
2026-07-10 GJS4401 DCA → EWR Jul 10, 21:14 UTCJul 10, 22:09 UTC55m
2026-07-10 GJS4401 DCA → EWR Jul 10, 21:15 UTCJul 10, 21:55 UTC40m
2026-07-10 GJS4433 EWR → DCA Jul 10, 18:30 UTCJul 10, 19:20 UTC50m
2026-07-10 GJS4433 EWR → DCA Jul 10, 18:23 UTCJul 10, 19:18 UTC55m
2026-07-10 GJS4607 - Jul 10, 15:30 UTCJul 10, 17:05 UTC1h 35m
2026-07-10 GJS4528 - Jul 10, 12:40 UTCJul 10, 14:15 UTC1h 35m
2026-07-10 GJS4415 - Jul 10, 09:55 UTCJul 10, 10:40 UTC45m
2026-07-10 GJS4415 DAY → ORD Jul 10, 10:03 UTCJul 10, 10:30 UTC27m
2026-07-09 GJS4484 - Jul 9, 23:25 UTCJul 10, 00:10 UTC45m
2026-07-09 GJS4533 - Jul 9, 21:15 UTCJul 9, 21:50 UTC35m
2026-07-09 GJS4488 - Jul 9, 19:35 UTCJul 9, 19:55 UTC20m
2026-07-09 GJS4600 - Jul 9, 16:05 UTCJul 9, 17:35 UTC1h 30m
2026-07-09 GJS4541 IAD → CVG Jul 9, 13:10 UTCJul 9, 14:25 UTC1h 15m
2026-07-09 GJS4540 - Jul 9, 10:45 UTCJul 9, 12:05 UTC1h 20m
2026-07-09 GJS4507 - Jul 9, 00:00 UTCJul 9, 01:10 UTC1h 10m
2026-07-08 GJS4441 - Jul 8, 20:30 UTCJul 8, 21:40 UTC1h 10m
2026-07-08 GJS4441 FSD → ORD Jul 8, 20:25 UTCJul 8, 21:23 UTC58m
2026-07-08 GJS4443 ORD → FSD Jul 8, 18:41 UTCJul 8, 19:32 UTC51m
2026-07-08 GJS4443 ORD → FSD Jul 8, 18:25 UTCJul 8, 19:35 UTC1h 10m
2026-07-08 GJS4517 STL → ORD Jul 8, 15:35 UTCJul 8, 16:25 UTC50m
2026-07-08 GJS4576 - Jul 8, 03:25 UTCJul 8, 04:05 UTC40m
2026-07-07 GJS4447 - Jul 7, 21:45 UTCJul 7, 23:15 UTC1h 30m
2026-07-07 GJS4501 ORD → AVP Jul 7, 19:26 UTCJul 7, 20:33 UTC1h 7m
2026-07-07 GJS4501 - Jul 7, 19:10 UTCJul 7, 20:30 UTC1h 20m
2026-07-07 GJS4439 - Jul 7, 16:25 UTCJul 7, 17:35 UTC1h 10m
2026-07-07 GJS4439 FSD → ORD Jul 7, 16:33 UTCJul 7, 17:21 UTC48m
2026-07-07 GJS4462 - Jul 7, 13:50 UTCJul 7, 14:55 UTC1h 5m
2026-07-07 GJS4440 - Jul 7, 11:40 UTCJul 7, 12:10 UTC30m
2026-07-07 GJS4603 - Jul 7, 03:40 UTCJul 7, 04:10 UTC30m
2026-07-06 GJS4434 - Jul 6, 23:30 UTCJul 7, 00:50 UTC1h 20m
2026-07-06 GJS4419 EWR → CHA Jul 6, 20:20 UTCJul 6, 22:00 UTC1h 40m
2026-07-06 GJS4531 - Jul 6, 17:55 UTCJul 6, 18:50 UTC55m
2026-07-05 GJS4448 EWR → ORF Jul 5, 22:40 UTCJul 5, 23:40 UTC1h 0m
2026-07-05 GJS4608 - Jul 5, 18:55 UTCJul 5, 20:05 UTC1h 10m
2026-07-05 GJS4489 EWR → GSO Jul 5, 16:31 UTCJul 5, 17:30 UTC59m
2026-07-05 GJS4489 - Jul 5, 16:25 UTCJul 5, 17:25 UTC1h 0m
2026-07-05 GJS4184 - Jul 5, 14:25 UTCJul 5, 15:10 UTC45m
2026-07-05 GJS4446 - Jul 5, 12:45 UTCJul 5, 13:30 UTC45m
2026-07-05 GJS4191 - Jul 5, 10:10 UTCJul 5, 10:55 UTC45m
2026-07-04 GJS4538 EWR → BTV Jul 4, 19:20 UTCJul 4, 20:10 UTC50m
2026-07-04 GJS4175 - Jul 4, 14:55 UTCJul 4, 15:45 UTC50m
2026-07-04 GJS4175 BUF → EWR Jul 4, 14:48 UTCJul 4, 15:42 UTC54m
2026-07-04 GJS4432 EWR → BUF Jul 4, 13:00 UTCJul 4, 13:50 UTC50m
2026-07-04 GJS4167 DCA → EWR Jul 4, 10:25 UTCJul 4, 11:05 UTC40m
2026-07-04 GJS4457 EWR → DCA Jul 4, 04:28 UTCJul 4, 04:51 UTC23m
2026-07-04 GJS4457 EWR → DCA Jul 4, 04:15 UTCJul 4, 04:50 UTC35m
2026-07-04 GJS4180 DCA → EWR Jul 4, 02:23 UTCJul 4, 03:18 UTC55m
2026-07-04 GJS4180 DCA → EWR Jul 4, 02:20 UTCJul 4, 03:10 UTC50m
2026-07-03 GJS4486 EWR → DCA Jul 3, 19:40 UTCJul 3, 20:25 UTC45m

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 N550GJ page for operator, model, and routing details .

Mode-S A7000A frequently asked

What is Mode-S code A7000A?
A7000A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N550GJ.
Where is Mode-S A7000A registered?
Mode-S code A7000A 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 A7000A broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7000A, octal 51600012, decimal 10,944,522.
What flights does A7000A operate?
Mode-S A7000A has broadcast 20 distinct callsigns, including GJS4392, GJS4517, GJS4415, GJS4531, GJS4508.