Apparatus

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sensors Mode-S transponder

A58DC2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N457SW · BOMBARDIER Regional Jet CRJ-200 · operated by SKYWEST AIRLINES INC

Hex
A58DC2
Octal
51306702
Decimal
10,849,730
Country
US
Tail
N457SW
Type
CRJ2
No current signal · last broadcast Jul 26, 20:15 UTC
Flights observed
323
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:15 UTC

Last known position

Most recent position reported by Mode-S A58DC2.

Country allocation

The ICAO 24-bit address A58DC2 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
SKW5036 - 5 2026-07-13
SKW5122 - 4 2026-07-02
SKW5044 - 4 2026-06-18
SKW5038 SkyWest Airlines 4 2026-06-12
SKW4718 - 4 2026-07-15
SKW6078 - 3 2026-07-19
SKW6002 SkyWest Airlines 3 2026-06-18
SKW5974 - 3 2026-06-14
SKW5801 - 3 2026-07-13
SKW5619 - 3 2026-06-15
SKW5522 - 3 2026-07-06
SKW5521 SkyWest Airlines 3 2026-06-10
SKW5451 SkyWest Airlines 3 2026-06-10
SKW5226 - 3 2026-07-01
SKW5064 - 3 2026-07-16
SKW5061 SkyWest Airlines 3 2026-07-25
SKW5046 - 3 2026-06-12
SKW5016 SkyWest Airlines 3 2026-06-14
SKW493P SkyWest Airlines 3 2026-06-10
SKW4808 - 3 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW430Y ORD → DCA Jul 26, 19:50 UTCJul 26, 20:15 UTC25m
2026-07-26 SKW5100 FOD → ORD Jul 26, 17:10 UTCJul 26, 18:05 UTC55m
2026-07-26 SKW5119 ORD → FOD Jul 26, 14:10 UTCJul 26, 15:25 UTC1h 15m
2026-07-26 SKW4800 CMH → ORD Jul 26, 11:45 UTCJul 26, 12:15 UTC30m
2026-07-26 SKW5240 SFO → SBP Jul 26, 04:10 UTCJul 26, 04:30 UTC20m
2026-07-25 SKW5061 EWR → IAH Jul 25, 11:45 UTCJul 25, 12:10 UTC25m
2026-07-25 SKW5061 EWR → IAH Jul 25, 11:34 UTCJul 25, 12:06 UTC32m
2026-07-25 SKW339A DEN → LBF Jul 25, 03:35 UTCJul 25, 04:00 UTC25m
2026-07-25 SKW5308 EUG → SFO Jul 25, 02:15 UTCJul 25, 02:35 UTC20m
2026-07-25 SKW5308 EUG → SFO Jul 25, 01:15 UTCJul 25, 01:30 UTC15m
2026-07-24 SKW5221 AMA → DEN Jul 24, 13:30 UTCJul 24, 14:10 UTC40m
2026-07-24 SKW5494 SLC → SFO Jul 24, 04:35 UTCJul 24, 05:10 UTC35m
2026-07-24 SKW4743 ICT → ORD Jul 24, 01:00 UTCJul 24, 01:45 UTC45m
2026-07-23 SKW5233 SFO → BUR Jul 23, 20:35 UTCJul 23, 21:05 UTC30m
2026-07-23 SKW5111 DDC → DEN Jul 23, 16:50 UTCJul 23, 18:15 UTC1h 25m
2026-07-23 SKW5080 FOD → ORD Jul 23, 14:25 UTCJul 23, 15:35 UTC1h 10m
2026-07-23 SKW5032 SLN → ORD Jul 23, 12:05 UTCJul 23, 12:50 UTC45m
2026-07-23 SKW406P DEN → COD Jul 23, 04:20 UTCJul 23, 05:00 UTC40m
2026-07-23 SKW5227 ORD → PIT Jul 23, 02:25 UTCJul 23, 03:10 UTC45m
2026-07-23 SKW5817 DEN → DRO Jul 23, 00:20 UTCJul 23, 01:00 UTC40m
2026-07-22 SKW5817 DEN → DRO Jul 22, 22:23 UTCJul 23, 01:13 UTC2h 50m
2026-07-22 SKW5113 ORD → JST Jul 22, 01:10 UTCJul 22, 02:25 UTC1h 15m
2026-07-22 SKW5113 ORD → JST Jul 22, 00:54 UTCJul 22, 02:24 UTC1h 30m
2026-07-21 SKW5077 SUX → ORD Jul 21, 22:40 UTCJul 21, 23:30 UTC50m
2026-07-20 SKW5126 LBL → DEN Jul 20, 16:37 UTCJul 20, 17:04 UTC27m
2026-07-20 SKW566Z - Jul 20, 14:35 UTCJul 20, 15:10 UTC35m
2026-07-20 SKW5513 SFO → MFR Jul 20, 11:25 UTCJul 20, 12:10 UTC45m
2026-07-20 SKW5802 MSN → ORD Jul 20, 03:40 UTCJul 20, 04:25 UTC45m
2026-07-20 SKW5590 - Jul 20, 00:15 UTCJul 20, 01:30 UTC1h 15m
2026-07-19 SKW5590 BIL → DEN Jul 19, 23:52 UTCJul 20, 01:39 UTC1h 47m
2026-07-19 SKW5845 DEN → BIL Jul 19, 21:00 UTCJul 19, 22:20 UTC1h 20m
2026-07-19 SKW5845 - Jul 19, 21:15 UTCJul 19, 22:25 UTC1h 10m
2026-07-19 SKW6078 DEN → DEN Jul 19, 14:30 UTCJul 19, 18:50 UTC4h 20m
2026-07-19 SKW5093 DEN → DEN Jul 19, 05:50 UTCJul 19, 12:30 UTC6h 40m
2026-07-18 SKW5061 - Jul 18, 11:40 UTCJul 18, 12:05 UTC25m
2026-07-18 SKW339A DEN → LBF Jul 18, 03:55 UTCJul 18, 04:20 UTC25m
2026-07-18 SKW5620 - Jul 18, 01:39 UTCJul 18, 02:19 UTC40m
2026-07-18 SKW5620 CPR → DEN Jul 18, 01:41 UTCJul 18, 02:15 UTC34m
2026-07-17 SKW5294 DEN → CPR Jul 17, 22:35 UTCJul 17, 23:14 UTC40m
2026-07-17 SKW422W ORD → DEC Jul 17, 19:15 UTCJul 17, 20:55 UTC1h 40m
2026-07-17 SKW422W ORD → DEC Jul 17, 19:17 UTCJul 17, 20:36 UTC1h 19m
2026-07-17 SKW5015 - Jul 17, 16:59 UTCJul 17, 18:15 UTC1h 15m
2026-07-17 SKW5015 ORD → JLN Jul 17, 17:03 UTCJul 17, 18:10 UTC1h 7m
2026-07-17 SKW5402 - Jul 17, 13:55 UTCJul 17, 14:35 UTC40m
2026-07-17 SKW5402 MKE → ORD Jul 17, 14:07 UTCJul 17, 14:14 UTC7m
2026-07-17 SKW5581 - Jul 17, 11:20 UTCJul 17, 11:39 UTC20m
2026-07-17 SKW5581 ORD → MKE Jul 17, 11:19 UTCJul 17, 11:38 UTC19m
2026-07-16 SKW5064 - Jul 16, 23:59 UTCJul 17, 00:40 UTC40m
2026-07-16 SKW5064 DEC → ORD Jul 16, 23:57 UTCJul 17, 00:19 UTC22m
2026-07-16 SKW5064 - Jul 16, 22:40 UTCJul 16, 23:15 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 N457SW page for operator, model, and routing details .

Mode-S A58DC2 frequently asked

What is Mode-S code A58DC2?
A58DC2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N457SW.
Where is Mode-S A58DC2 registered?
Mode-S code A58DC2 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 A58DC2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A58DC2, octal 51306702, decimal 10,849,730.
What flights does A58DC2 operate?
Mode-S A58DC2 has broadcast 20 distinct callsigns, including SKW5036, SKW5122, SKW5044, SKW5038, SKW4718.