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sensors Mode-S transponder

A6BC31

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N533GJ · BOMBARDIER Regional Jet CRJ-700 · operated by SKYWEST AIRLINES INC

Hex
A6BC31
Octal
51536061
Decimal
10,927,153
Country
US
Tail
N533GJ
Type
CRJ7
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
582
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S A6BC31.

Country allocation

The ICAO 24-bit address A6BC31 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
SKW5866 - 12 2026-07-13
SKW5622 SkyWest Airlines 11 2026-07-18
SKW5609 - 9 2026-07-21
SKW4688 SkyWest Airlines 8 2026-07-19
SKW5661 - 7 2026-07-11
SKW5528 - 7 2026-07-18
SKW4778 - 7 2026-07-19
SKW5827 - 6 2026-07-10
SKW5348 SkyWest Airlines 6 2026-07-18
SKW4738 SkyWest Airlines 6 2026-06-15
SKW5896 SkyWest Airlines 5 2026-07-20
SKW5612 - 5 2026-06-23
SKW5516 SkyWest Airlines 5 2026-07-24
SKW5346 - 5 2026-07-12
SKW5302 SkyWest Airlines 5 2026-07-18
SKW5293 SkyWest Airlines 5 2026-06-15
SKW5076 SkyWest Airlines 5 2026-07-26
SKW4807 - 5 2026-07-12
SKW4646 SkyWest Airlines 5 2026-07-22
SKW729H SkyWest Airlines 4 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW5640 ORD → TVC Jul 26, 21:00 UTCJul 26, 21:35 UTC35m
2026-07-26 SKW5714 SJC → DEN Jul 26, 18:50 UTCJul 26, 19:35 UTC45m
2026-07-26 SKW5234 MLI → ORD Jul 26, 17:20 UTCJul 26, 18:00 UTC40m
2026-07-26 SKW5629 SAT → IAH Jul 26, 14:32 UTCJul 26, 15:19 UTC47m
2026-07-26 SKW5703 SFO → PSP Jul 26, 12:40 UTCJul 26, 13:30 UTC50m
2026-07-26 SKW5076 CIU → ORD Jul 26, 10:31 UTCJul 26, 11:30 UTC59m
2026-07-26 SKW5076 CIU → ORD Jul 26, 10:20 UTCJul 26, 11:30 UTC1h 10m
2026-07-25 SKW5052 JLN → DEN Jul 25, 22:30 UTCJul 26, 00:00 UTC1h 30m
2026-07-25 SKW5055 DEN → GCC Jul 25, 19:10 UTCJul 25, 20:35 UTC1h 25m
2026-07-25 SKW317H ORD → PAH Jul 25, 16:50 UTCJul 25, 17:40 UTC50m
2026-07-25 SKW5629 SAT → IAH Jul 25, 14:15 UTCJul 25, 15:10 UTC55m
2026-07-25 SKW5703 SFO → PSP Jul 25, 12:35 UTCJul 25, 13:20 UTC45m
2026-07-24 SKW5516 SAV → ORD Jul 24, 22:30 UTCJul 24, 23:00 UTC30m
2026-07-24 SKW5250 ORD → SAV Jul 24, 19:20 UTCJul 24, 19:50 UTC30m
2026-07-24 SKW5250 ORD → SAV Jul 24, 19:35 UTCJul 24, 19:44 UTC9m
2026-07-24 SKW5470 ORD → CHA Jul 24, 16:25 UTCJul 24, 17:45 UTC1h 20m
2026-07-24 SKW5470 ORD → CHA Jul 24, 16:26 UTCJul 24, 17:44 UTC1h 18m
2026-07-24 SKW5407 ONT → SFO Jul 24, 13:55 UTCJul 24, 15:10 UTC1h 15m
2026-07-24 SKW4651 MFR → SFO Jul 24, 11:00 UTCJul 24, 12:25 UTC1h 25m
2026-07-24 SKW5663 SFO → FAT Jul 24, 00:20 UTCJul 24, 01:25 UTC1h 5m
2026-07-23 SKW5516 SAV → ORD Jul 23, 21:55 UTCJul 23, 22:25 UTC30m
2026-07-23 SKW5516 SAV → ORD Jul 23, 21:56 UTCJul 23, 22:21 UTC25m
2026-07-23 SKW5250 ORD → SAV Jul 23, 20:30 UTCJul 23, 21:00 UTC30m
2026-07-23 SKW5399 BWI → LGA Jul 23, 15:35 UTCJul 23, 16:00 UTC25m
2026-07-23 SKW5399 BWI → LGA Jul 23, 15:38 UTCJul 23, 15:55 UTC17m
2026-07-23 SKW5842 - Jul 23, 14:15 UTCJul 23, 14:35 UTC20m
2026-07-23 SKW5840 PHX → IAH Jul 23, 10:15 UTCJul 23, 11:05 UTC50m
2026-07-22 SKW5640 ORD → TVC Jul 22, 20:55 UTCJul 22, 21:30 UTC35m
2026-07-22 SKW5714 SJC → DEN Jul 22, 18:40 UTCJul 22, 19:45 UTC1h 5m
2026-07-22 SKW5234 MLI → ORD Jul 22, 16:20 UTCJul 22, 16:55 UTC35m
2026-07-22 SKW5234 MLI → ORD Jul 22, 16:34 UTCJul 22, 16:51 UTC17m
2026-07-22 SKW4646 CAK → ORD Jul 22, 11:10 UTCJul 22, 12:20 UTC1h 10m
2026-07-22 SKW5982 SBA → SFO Jul 22, 03:30 UTCJul 22, 04:15 UTC45m
2026-07-22 SKW6050 ORD → GEG Jul 22, 00:10 UTCJul 22, 01:25 UTC1h 15m
2026-07-21 SKW5230 - Jul 21, 22:40 UTCJul 21, 23:30 UTC50m
2026-07-21 SKW4691 - Jul 21, 19:45 UTCJul 21, 20:25 UTC40m
2026-07-21 SKW4647 CHO → ORD Jul 21, 17:55 UTCJul 21, 18:30 UTC35m
2026-07-21 SKW5609 COU → ORD Jul 21, 13:06 UTCJul 21, 14:09 UTC1h 3m
2026-07-21 SKW378M ORD → COU Jul 21, 03:45 UTCJul 21, 04:25 UTC40m
2026-07-21 SKW5957 - Jul 21, 01:00 UTCJul 21, 01:40 UTC40m
2026-07-20 SKW5813 SJC → DEN Jul 20, 23:30 UTCJul 21, 00:05 UTC34m
2026-07-20 SKW4691 - Jul 20, 20:25 UTCJul 20, 21:25 UTC1h 0m
2026-07-20 SKW4647 CHO → ORD Jul 20, 18:45 UTCJul 20, 19:25 UTC40m
2026-07-20 SKW5399 BWI → LGA Jul 20, 15:50 UTCJul 20, 16:10 UTC20m
2026-07-20 SKW5842 - Jul 20, 14:00 UTCJul 20, 14:20 UTC20m
2026-07-20 SKW5896 SFO → BUR Jul 20, 11:35 UTCJul 20, 12:00 UTC25m
2026-07-20 SKW5896 SFO → BUR Jul 20, 11:32 UTCJul 20, 11:56 UTC24m
2026-07-20 SKW4711 - Jul 20, 01:20 UTCJul 20, 01:40 UTC20m
2026-07-19 SKW5648 - Jul 19, 22:45 UTCJul 19, 23:15 UTC30m
2026-07-19 SKW5345 ORD → CAK Jul 19, 21:10 UTCJul 19, 21:35 UTC25m

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 N533GJ page for operator, model, and routing details .

Mode-S A6BC31 frequently asked

What is Mode-S code A6BC31?
A6BC31 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N533GJ.
Where is Mode-S A6BC31 registered?
Mode-S code A6BC31 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 A6BC31 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6BC31, octal 51536061, decimal 10,927,153.
What flights does A6BC31 operate?
Mode-S A6BC31 has broadcast 20 distinct callsigns, including SKW5866, SKW5622, SKW5609, SKW4688, SKW5661.