Apparatus

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sensors Mode-S transponder

A75A2D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N573GJ · BOMBARDIER Regional Jet CRJ-700 · operated by SKY WEST AIRLINES INC

Hex
A75A2D
Octal
51655055
Decimal
10,967,597
Country
US
Tail
N573GJ
Type
CRJ7
No current signal · last broadcast 6h ago
Flights observed
280
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A75A2D.

Country allocation

The ICAO 24-bit address A75A2D 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
SKW4776 - 7 2026-07-08
SKW5353 - 6 2026-07-09
SKW4694 - 6 2026-07-09
SKW5669 - 5 2026-07-08
SKW4663 - 5 2026-07-07
SKW5643 - 4 2026-07-07
SKW5551 - 4 2026-07-10
SKW5348 - 4 2026-07-10
SKW5310 - 4 2026-07-03
SKW5293 - 4 2026-06-29
SKW4738 - 4 2026-06-30
SKW395Z - 4 2026-07-09
SKW6007 SkyWest Airlines 3 2026-05-17
SKW594X SkyWest Airlines 3 2026-06-15
SKW5827 SkyWest Airlines 3 2026-06-30
SKW5622 - 3 2026-07-12
SKW5506 SkyWest Airlines 3 2026-05-16
SKW5431 - 3 2026-07-01
SKW5333 - 3 2026-07-04
SKW5257 - 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 SKW5622 DEN → LNK Jul 12, 00:35 UTCJul 12, 01:30 UTC55m
2026-07-12 SKW5622 DEN → LNK Jul 12, 00:22 UTCJul 12, 01:30 UTC1h 8m
2026-07-11 SKW5302 DEN → DEN Jul 11, 18:55 UTCJul 11, 23:05 UTC4h 10m
2026-07-10 SKW5348 LNK → DEN Jul 10, 16:20 UTCJul 10, 17:30 UTC1h 10m
2026-07-10 SKW5824 DEN → LNK Jul 10, 04:25 UTCJul 10, 05:35 UTC1h 10m
2026-07-10 SKW5551 - Jul 10, 01:55 UTCJul 10, 03:00 UTC1h 5m
2026-07-09 SKW395Z - Jul 9, 22:00 UTCJul 9, 22:55 UTC55m
2026-07-09 SKW395Z DEN → IDA Jul 9, 21:54 UTCJul 9, 23:10 UTC1h 16m
2026-07-09 SKW4694 DEN → DEN Jul 9, 16:25 UTCJul 9, 20:15 UTC3h 50m
2026-07-09 SKW5678 DEN → DEN Jul 9, 04:20 UTCJul 9, 14:15 UTC9h 55m
2026-07-09 SKW5353 FSD → DEN Jul 9, 00:20 UTCJul 9, 02:20 UTC2h 0m
2026-07-08 SKW4776 DEN → FSD Jul 8, 22:20 UTCJul 8, 23:20 UTC1h 0m
2026-07-08 SKW5400 - Jul 8, 16:40 UTCJul 8, 17:00 UTC20m
2026-07-08 SKW5669 DEN → COS Jul 8, 02:45 UTCJul 8, 03:10 UTC25m
2026-07-08 SKW5669 DEN → COS Jul 8, 02:52 UTCJul 8, 03:02 UTC10m
2026-07-08 SKW4799 - Jul 8, 00:50 UTCJul 8, 01:50 UTC1h 0m
2026-07-08 SKW4799 SAF → DEN Jul 8, 00:42 UTCJul 8, 01:45 UTC1h 3m
2026-07-07 SKW5643 - Jul 7, 22:10 UTCJul 7, 23:00 UTC50m
2026-07-07 SKW4694 - Jul 7, 19:20 UTCJul 7, 20:25 UTC1h 5m
2026-07-07 SKW4663 - Jul 7, 16:20 UTCJul 7, 17:15 UTC55m
2026-07-07 SKW4663 DEN → BIS Jul 7, 16:26 UTCJul 7, 17:30 UTC1h 4m
2026-07-07 SKW5678 - Jul 7, 13:00 UTCJul 7, 14:20 UTC1h 20m
2026-07-07 SKW5366 - Jul 7, 03:40 UTCJul 7, 04:40 UTC1h 0m
2026-07-07 SKW5353 - Jul 7, 01:20 UTCJul 7, 02:30 UTC1h 10m
2026-07-06 SKW4776 - Jul 6, 22:35 UTCJul 6, 23:50 UTC1h 15m
2026-07-06 SKW4776 DEN → FSD Jul 6, 22:35 UTCJul 6, 23:49 UTC1h 14m
2026-07-06 SKW5229 MOT → DEN Jul 6, 18:55 UTCJul 6, 20:06 UTC1h 11m
2026-07-06 SKW5235 - Jul 6, 16:25 UTCJul 6, 17:25 UTC1h 0m
2026-07-06 SKW5366 DEN → DEN Jul 6, 03:05 UTCJul 6, 14:35 UTC11h 30m
2026-07-06 SKW5353 FSD → DEN Jul 6, 00:00 UTCJul 6, 01:10 UTC1h 10m
2026-07-05 SKW4776 DEN → FSD Jul 5, 22:00 UTCJul 5, 23:10 UTC1h 10m
2026-07-05 SKW4694 DEN → DEN Jul 5, 16:20 UTCJul 5, 20:05 UTC3h 45m
2026-07-05 SKW5822 - Jul 5, 13:45 UTCJul 5, 14:30 UTC45m
2026-07-04 SKW5333 - Jul 4, 16:25 UTCJul 4, 17:00 UTC35m
2026-07-04 SKW5346 - Jul 4, 13:25 UTCJul 4, 14:50 UTC1h 25m
2026-07-03 SKW455E - Jul 3, 23:45 UTCJul 4, 00:15 UTC30m
2026-07-03 SKW5878 SFO → SBA Jul 3, 19:20 UTCJul 3, 20:10 UTC50m
2026-07-03 SKW5310 - Jul 3, 17:40 UTCJul 3, 18:20 UTC40m
2026-07-03 SKW5310 DEN → SAF Jul 3, 17:46 UTCJul 3, 18:26 UTC40m
2026-07-03 SKW5348 LNK → DEN Jul 3, 14:55 UTCJul 3, 16:05 UTC1h 10m
2026-07-02 SKW5622 DEN → LNK Jul 2, 23:40 UTCJul 3, 00:40 UTC1h 0m
2026-07-02 SKW4663 DEN → DEN Jul 2, 16:50 UTCJul 2, 20:25 UTC3h 35m
2026-07-02 SKW5346 - Jul 2, 13:40 UTCJul 2, 14:40 UTC1h 0m
2026-07-01 SKW455E - Jul 1, 23:55 UTCJul 2, 00:30 UTC35m
2026-07-01 SKW5878 SFO → SBA Jul 1, 22:10 UTCJul 1, 23:00 UTC50m
2026-07-01 SKW5310 - Jul 1, 20:15 UTCJul 1, 20:50 UTC35m
2026-07-01 SKW5310 DEN → SAF Jul 1, 20:09 UTCJul 1, 20:58 UTC49m
2026-07-01 SKW5194 COS → DEN Jul 1, 18:25 UTCJul 1, 18:50 UTC25m
2026-07-01 SKW5669 DEN → COS Jul 1, 02:25 UTCJul 1, 02:45 UTC20m
2026-07-01 SKW5431 LNK → DEN Jul 1, 00:05 UTCJul 1, 01:20 UTC1h 15m

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 N573GJ page for operator, model, and routing details .

Mode-S A75A2D frequently asked

What is Mode-S code A75A2D?
A75A2D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N573GJ.
Where is Mode-S A75A2D registered?
Mode-S code A75A2D 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 A75A2D broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A75A2D, octal 51655055, decimal 10,967,597.
What flights does A75A2D operate?
Mode-S A75A2D has broadcast 20 distinct callsigns, including SKW4776, SKW5353, SKW4694, SKW5669, SKW4663.