Apparatus

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sensors Mode-S transponder

A5958C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N459WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A5958C
Octal
51312614
Decimal
10,851,724
Country
US
Tail
N459WN
Type
B737
No current signal · last broadcast Jul 26, 22:40 UTC
Flights observed
757
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:40 UTC

Last known position

Most recent position reported by Mode-S A5958C.

Country allocation

The ICAO 24-bit address A5958C 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
SWA1297 - 9 2026-07-09
SWA284 - 6 2026-06-16
SWA983 Southwest Airlines 5 2026-06-05
SWA342 Southwest Airlines 5 2026-05-03
SWA3091 Southwest Airlines 5 2026-04-26
SWA285 Southwest Airlines 5 2026-06-15
SWA148 - 5 2026-07-17
SWA1315 Southwest Airlines 5 2026-04-14
SWA445 - 4 2026-07-10
SWA4370 - 4 2026-07-05
SWA4229 Southwest Airlines 4 2026-07-19
SWA3941 - 4 2026-04-13
SWA3665 Southwest Airlines 4 2026-05-10
SWA3297 Southwest Airlines 4 2026-05-14
SWA2974 Southwest Airlines 4 2026-06-02
SWA290 - 4 2026-06-21
SWA2585 Southwest Airlines 4 2026-04-18
SWA2433 - 4 2026-07-03
SWA2379 Southwest Airlines 4 2026-05-20
SWA2230 Southwest Airlines 4 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1564 PHL → MDW Jul 26, 21:20 UTCJul 26, 22:40 UTC1h 20m
2026-07-26 SWA1564 PHL → MDW Jul 26, 18:25 UTCJul 26, 20:10 UTC1h 45m
2026-07-26 SWA4633 HOU → TPA Jul 26, 15:50 UTCJul 26, 17:15 UTC1h 25m
2026-07-26 SWA3352 DEN → STL Jul 26, 12:05 UTCJul 26, 14:40 UTC2h 35m
2026-07-26 SWA839 LAX → OAK Jul 26, 03:15 UTCJul 26, 04:25 UTC1h 10m
2026-07-26 SWA839 LAX → OAK Jul 26, 03:14 UTCJul 26, 04:24 UTC1h 10m
2026-07-26 SWA2230 SFO → LAX Jul 26, 01:33 UTCJul 26, 02:24 UTC51m
2026-07-26 SWA2230 SFO → LAX Jul 26, 01:35 UTCJul 26, 02:25 UTC50m
2026-07-25 SWA2230 SFO → LAX Jul 25, 21:10 UTCJul 26, 00:35 UTC3h 25m
2026-07-25 SWA2230 SFO → LAX Jul 25, 21:09 UTCJul 26, 00:28 UTC3h 20m
2026-07-25 SWA1433 SAN → OAK Jul 25, 17:15 UTCJul 25, 19:45 UTC2h 30m
2026-07-25 SWA1433 SAN → OAK Jul 25, 15:10 UTCJul 25, 16:20 UTC1h 10m
2026-07-25 SWA1433 SAN → OAK Jul 25, 12:00 UTCJul 25, 14:15 UTC2h 15m
2026-07-25 SWA4629 SAN → SJC Jul 25, 00:40 UTCJul 25, 02:20 UTC1h 40m
2026-07-25 SWA4629 SAN → SJC Jul 25, 00:36 UTCJul 25, 02:15 UTC1h 39m
2026-07-24 SWA4594 BDL → BWI Jul 24, 23:15 UTCJul 24, 23:55 UTC40m
2026-07-24 SWA4345 BUR → SJC Jul 24, 15:41 UTCJul 24, 16:44 UTC1h 3m
2026-07-24 SWA4345 BUR → SJC Jul 24, 15:45 UTCJul 24, 16:45 UTC1h 0m
2026-07-24 SWA3961 IND → MCO Jul 24, 13:45 UTCJul 24, 14:55 UTC1h 10m
2026-07-24 SWA3961 IND → MCO Jul 24, 13:45 UTCJul 24, 14:56 UTC1h 11m
2026-07-24 SWA3435 BNA → IAH Jul 24, 10:35 UTCJul 24, 12:20 UTC1h 45m
2026-07-24 SWA793 OAK → BUR Jul 24, 01:25 UTCJul 24, 02:10 UTC45m
2026-07-23 SWA793 OAK → BUR Jul 23, 22:25 UTCJul 24, 00:05 UTC1h 40m
2026-07-23 SWA2369 LAS → BUR Jul 23, 18:40 UTCJul 23, 21:20 UTC2h 40m
2026-07-23 SWA2369 LAS → BUR Jul 23, 16:25 UTCJul 23, 17:25 UTC1h 0m
2026-07-23 SWA834 ALB → MCO Jul 23, 14:40 UTCJul 23, 15:25 UTC45m
2026-07-23 SWA834 ALB → MCO Jul 23, 14:36 UTCJul 23, 15:24 UTC48m
2026-07-23 SWA4228 MYR → MDW Jul 23, 02:55 UTCJul 23, 03:45 UTC50m
2026-07-22 SWA4779 MDW → PHL Jul 22, 22:45 UTCJul 23, 01:55 UTC3h 10m
2026-07-22 SWA3625 PDX → SMF Jul 22, 20:30 UTCJul 22, 21:10 UTC40m
2026-07-22 SWA3625 PDX → SMF Jul 22, 20:29 UTCJul 22, 21:00 UTC31m
2026-07-22 SWA3433 OAK → SEA Jul 22, 18:40 UTCJul 22, 19:20 UTC40m
2026-07-22 SWA1400 BNA → TPA Jul 22, 17:00 UTCJul 22, 17:40 UTC40m
2026-07-22 SWA1400 BNA → TPA Jul 22, 15:20 UTCJul 22, 16:05 UTC45m
2026-07-22 SWA1400 BNA → TPA Jul 22, 13:30 UTCJul 22, 14:15 UTC45m
2026-07-22 SWA4705 MCI → PHX Jul 22, 11:30 UTCJul 22, 12:00 UTC30m
2026-07-22 SWA4705 MCI → PHX Jul 22, 11:07 UTCJul 22, 11:52 UTC45m
2026-07-21 SWA1062 - Jul 21, 20:05 UTCJul 21, 21:10 UTC1h 5m
2026-07-21 SWA1062 BWI → GSP Jul 21, 20:04 UTCJul 21, 21:18 UTC1h 14m
2026-07-21 SWA2143 - Jul 21, 17:25 UTCJul 21, 18:20 UTC55m
2026-07-21 SWA4691 BWI → ISP Jul 21, 14:50 UTCJul 21, 15:35 UTC45m
2026-07-21 SWA4691 BWI → ISP Jul 21, 14:49 UTCJul 21, 15:32 UTC43m
2026-07-21 SWA1077 DAL → BWI Jul 21, 12:30 UTCJul 21, 13:45 UTC1h 15m
2026-07-21 SWA1077 DAL → BWI Jul 21, 12:27 UTCJul 21, 13:43 UTC1h 16m
2026-07-21 SWA1125 LGB → SJC Jul 21, 01:30 UTCJul 21, 02:35 UTC1h 5m
2026-07-20 SWA4616 DAL → DEN Jul 20, 23:05 UTCJul 21, 00:25 UTC1h 19m
2026-07-20 SWA4479 DCA → MDW Jul 20, 20:28 UTCJul 20, 22:00 UTC1h 33m
2026-07-20 SWA4479 DCA → MDW Jul 20, 20:30 UTCJul 20, 22:00 UTC1h 30m
2026-07-20 SWA1185 DEN → LGA Jul 20, 18:25 UTCJul 20, 19:15 UTC50m
2026-07-20 SWA1429 BHM → MDW Jul 20, 16:30 UTCJul 20, 17:20 UTC50m

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 N459WN page for operator, model, and routing details .

Mode-S A5958C frequently asked

What is Mode-S code A5958C?
A5958C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N459WN.
Where is Mode-S A5958C registered?
Mode-S code A5958C 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 A5958C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5958C, octal 51312614, decimal 10,851,724.
What flights does A5958C operate?
Mode-S A5958C has broadcast 20 distinct callsigns, including SWA1297, SWA284, SWA983, SWA342, SWA3091.