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sensors Mode-S transponder

A7619B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N575GJ · operated by SKYWEST AIRLINES INC

Hex
A7619B
Octal
51660633
Decimal
10,969,499
Country
US
Tail
N575GJ
Type
CRJ7
No current signal · last broadcast 5h ago
Flights observed
394
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A7619B.

Country allocation

The ICAO 24-bit address A7619B 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
SKW5869 - 10 2026-07-12
SKW5977 SkyWest Airlines 6 2026-05-25
SKW5935 - 6 2026-07-07
SKW5723 SkyWest Airlines 6 2026-05-14
SKW5402 SkyWest Airlines 6 2026-06-05
SKW5055 - 6 2026-07-03
SKW6007 SkyWest Airlines 5 2026-04-25
SKW5910 SkyWest Airlines 5 2026-04-27
SKW5195 - 5 2026-07-10
SKW4691 - 5 2026-06-30
SKW6020 SkyWest Airlines 4 2026-04-28
SKW5998 SkyWest Airlines 4 2026-04-23
SKW595Y SkyWest Airlines 4 2026-05-21
SKW5890 SkyWest Airlines 4 2026-06-03
SKW5746 - 4 2026-07-01
SKW5612 SkyWest Airlines 4 2026-06-03
SKW5544 SkyWest Airlines 4 2026-05-20
SKW5499 SkyWest Airlines 4 2026-05-14
SKW6017 SkyWest Airlines 3 2026-04-23
SKW6012 SkyWest Airlines 3 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SKW5516 - Jul 13, 22:45 UTCJul 13, 23:20 UTC35m
2026-07-13 SKW5250 - Jul 13, 20:30 UTCJul 13, 21:00 UTC30m
2026-07-13 SKW5470 - Jul 13, 16:20 UTCJul 13, 17:50 UTC1h 30m
2026-07-13 SKW5407 - Jul 13, 13:55 UTCJul 13, 15:10 UTC1h 15m
2026-07-13 SKW5407 ORD → XNA Jul 13, 14:09 UTCJul 13, 15:00 UTC51m
2026-07-13 SKW5699 CHO → ORD Jul 13, 10:41 UTCJul 13, 12:00 UTC1h 19m
2026-07-12 SKW5610 - Jul 12, 23:10 UTCJul 13, 00:30 UTC1h 20m
2026-07-12 SKW5610 ORD → CHO Jul 12, 23:17 UTCJul 13, 00:35 UTC1h 18m
2026-07-12 SKW5869 - Jul 12, 21:05 UTCJul 12, 21:55 UTC50m
2026-07-12 SKW404F - Jul 12, 18:30 UTCJul 12, 19:15 UTC45m
2026-07-12 SKW5912 LNK → ORD Jul 12, 15:55 UTCJul 12, 17:10 UTC1h 15m
2026-07-12 SKW5826 DEN → LNK Jul 12, 13:55 UTCJul 12, 14:55 UTC1h 0m
2026-07-11 SKW5103 DEN → DEN Jul 11, 22:01 UTCJul 12, 01:15 UTC3h 15m
2026-07-11 SKW4807 - Jul 11, 19:00 UTCJul 11, 20:15 UTC1h 15m
2026-07-11 SKW5333 - Jul 11, 16:40 UTCJul 11, 17:50 UTC1h 10m
2026-07-11 SKW4677 - Jul 11, 14:05 UTCJul 11, 14:30 UTC25m
2026-07-11 SKW5669 DEN → COS Jul 11, 02:13 UTCJul 11, 02:36 UTC23m
2026-07-11 SKW5669 DEN → COS Jul 11, 02:20 UTCJul 11, 02:45 UTC25m
2026-07-10 SKW5367 - Jul 10, 17:00 UTCJul 10, 17:45 UTC45m
2026-07-10 SKW5195 COS → XWA Jul 10, 13:22 UTCJul 10, 14:45 UTC1h 23m
2026-07-10 SKW5195 - Jul 10, 13:10 UTCJul 10, 14:05 UTC55m
2026-07-10 SKW764Y DEN → COS Jul 10, 04:20 UTCJul 10, 04:35 UTC15m
2026-07-09 SKW4807 - Jul 9, 19:00 UTCJul 9, 20:25 UTC1h 25m
2026-07-09 SKW5333 - Jul 9, 16:30 UTCJul 9, 17:40 UTC1h 10m
2026-07-08 SKW5195 - Jul 8, 16:20 UTCJul 8, 16:45 UTC25m
2026-07-08 SKW5308 DEN → COS Jul 8, 02:15 UTCJul 8, 02:30 UTC15m
2026-07-07 SKW5935 - Jul 7, 11:00 UTCJul 7, 12:10 UTC1h 10m
2026-07-07 SKW5237 - Jul 7, 00:25 UTCJul 7, 01:40 UTC1h 15m
2026-07-06 SKW5878 SFO → SBA Jul 6, 19:40 UTCJul 6, 20:40 UTC1h 0m
2026-07-06 SKW5310 - Jul 6, 18:00 UTCJul 6, 18:35 UTC35m
2026-07-06 SKW5348 LNK → DEN Jul 6, 15:10 UTCJul 6, 16:20 UTC1h 10m
2026-07-06 SKW5622 - Jul 6, 00:55 UTCJul 6, 01:55 UTC1h 0m
2026-07-05 SKW5825 LNK → DEN Jul 5, 16:50 UTCJul 5, 17:55 UTC1h 5m
2026-07-05 SKW5215 ORD → LNK Jul 5, 14:55 UTCJul 5, 16:00 UTC1h 5m
2026-07-04 SKW4685 - Jul 4, 23:50 UTCJul 5, 01:00 UTC1h 10m
2026-07-04 SKW5437 - Jul 4, 19:20 UTCJul 4, 20:10 UTC50m
2026-07-04 SKW6034 - Jul 4, 16:10 UTCJul 4, 17:35 UTC1h 25m
2026-07-04 SKW5919 JAC → SFO Jul 4, 14:35 UTCJul 4, 14:55 UTC20m
2026-07-04 SKW5919 JAC → SFO Jul 4, 12:00 UTCJul 4, 13:15 UTC1h 15m
2026-07-03 SKW5470 - Jul 3, 21:35 UTCJul 3, 23:05 UTC1h 30m
2026-07-03 SKW5407 ORD → XNA Jul 3, 15:20 UTCJul 3, 16:40 UTC1h 20m
2026-07-03 SKW5076 PAH → ORD Jul 3, 10:05 UTCJul 3, 11:05 UTC1h 0m
2026-07-03 SKW5055 - Jul 3, 00:35 UTCJul 3, 02:00 UTC1h 25m
2026-07-02 SKW5055 - Jul 2, 21:20 UTCJul 2, 23:20 UTC2h 0m
2026-07-02 SKW473M - Jul 2, 16:50 UTCJul 2, 17:40 UTC50m
2026-07-02 SKW473M ORD → PAH Jul 2, 17:01 UTCJul 2, 17:33 UTC32m
2026-07-02 SKW5853 - Jul 2, 12:50 UTCJul 2, 14:05 UTC1h 15m
2026-07-02 SKW5767 - Jul 2, 04:35 UTCJul 2, 05:55 UTC1h 20m
2026-07-02 SKW5767 ORD → XNA Jul 2, 04:17 UTCJul 2, 05:46 UTC1h 29m
2026-07-02 SKW5957 - Jul 2, 02:30 UTCJul 2, 03:05 UTC35m

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 N575GJ page for operator, model, and routing details .

Mode-S A7619B frequently asked

What is Mode-S code A7619B?
A7619B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N575GJ.
Where is Mode-S A7619B registered?
Mode-S code A7619B 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 A7619B broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7619B, octal 51660633, decimal 10,969,499.
What flights does A7619B operate?
Mode-S A7619B has broadcast 20 distinct callsigns, including SKW5869, SKW5977, SKW5935, SKW5723, SKW5402.