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sensors Mode-S transponder

AD4584

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N954WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AD4584
Octal
53242604
Decimal
11,355,524
Country
US
Tail
N954WN
Type
B737
No current signal · last broadcast 2h ago
Flights observed
633
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AD4584.

Country allocation

The ICAO 24-bit address AD4584 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
SWA823 - 7 2026-07-12
SWA432 - 7 2026-07-13
SWA1095 Southwest Airlines 6 2026-04-17
SWA3652 Southwest Airlines 5 2026-05-29
SWA3144 Southwest Airlines 5 2026-05-29
SWA1738 - 5 2026-06-24
SWA138 - 5 2026-07-11
SWA921 - 4 2026-07-10
SWA893 - 4 2026-07-13
SWA705 - 4 2026-07-13
SWA66 Southwest Airlines 4 2026-06-09
SWA4758 - 4 2026-07-13
SWA380 - 4 2026-06-20
SWA38 Southwest Airlines 4 2026-05-27
SWA311 Southwest Airlines 4 2026-06-13
SWA2413 Southwest Airlines 4 2026-04-14
SWA1909 Southwest Airlines 4 2026-05-19
SWA1839 - 4 2026-07-11
SWA1748 - 4 2026-06-14
SWA1706 Southwest Airlines 4 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SWA4758 ATL → ABQ Jul 13, 22:35 UTCJul 14, 02:35 UTC4h 0m
2026-07-13 SWA893 BNA → ATL Jul 13, 20:20 UTCJul 13, 21:05 UTC45m
2026-07-13 SWA893 BNA → ATL Jul 13, 20:20 UTCJul 13, 21:03 UTC44m
2026-07-13 SWA705 - Jul 13, 15:40 UTCJul 13, 17:10 UTC1h 30m
2026-07-13 SWA705 - Jul 13, 14:10 UTCJul 13, 14:40 UTC30m
2026-07-13 SWA1077 - Jul 13, 11:55 UTCJul 13, 13:10 UTC1h 15m
2026-07-13 SWA432 - Jul 13, 01:30 UTCJul 13, 02:01 UTC30m
2026-07-12 SWA432 - Jul 12, 23:05 UTCJul 12, 23:45 UTC40m
2026-07-12 SWA432 - Jul 12, 21:50 UTCJul 12, 22:10 UTC20m
2026-07-12 SWA432 - Jul 12, 21:00 UTCJul 12, 21:45 UTC45m
2026-07-12 SWA823 - Jul 12, 17:05 UTCJul 12, 19:50 UTC2h 45m
2026-07-12 SWA823 - Jul 12, 14:50 UTCJul 12, 15:45 UTC55m
2026-07-12 SWA823 - Jul 12, 11:20 UTCJul 12, 13:55 UTC2h 35m
2026-07-11 SWA1600 DCA → DAL Jul 11, 23:10 UTCJul 12, 02:01 UTC2h 50m
2026-07-11 SWA1600 DCA → DAL Jul 11, 23:06 UTCJul 12, 01:53 UTC2h 48m
2026-07-11 SWA1839 - Jul 11, 19:25 UTCJul 11, 21:55 UTC2h 30m
2026-07-11 SWA1839 DAL → DCA Jul 11, 19:22 UTCJul 11, 21:46 UTC2h 24m
2026-07-11 SWA1839 - Jul 11, 15:20 UTCJul 11, 18:20 UTC3h 0m
2026-07-11 SWA1839 - Jul 11, 13:25 UTCJul 11, 14:10 UTC45m
2026-07-11 SWA373 LAS → SBA Jul 11, 07:20 UTCJul 11, 08:15 UTC55m
2026-07-11 SWA138 - Jul 11, 05:31 UTCJul 11, 06:40 UTC1h 10m
2026-07-11 SWA138 - Jul 11, 03:55 UTCJul 11, 04:45 UTC50m
2026-07-11 SWA138 SLC → DEN Jul 11, 01:50 UTCJul 11, 02:45 UTC55m
2026-07-10 SWA138 BUR → SLC Jul 10, 22:00 UTCJul 11, 00:40 UTC2h 40m
2026-07-10 SWA1493 - Jul 10, 20:00 UTCJul 10, 21:00 UTC1h 0m
2026-07-10 SWA4805 - Jul 10, 17:35 UTCJul 10, 18:55 UTC1h 20m
2026-07-10 SWA146 - Jul 10, 15:05 UTCJul 10, 16:25 UTC1h 20m
2026-07-10 SWA146 ABQ → PHX Jul 10, 13:15 UTCJul 10, 14:10 UTC55m
2026-07-10 SWA1468 DEN → ABQ Jul 10, 06:35 UTCJul 10, 07:30 UTC55m
2026-07-10 SWA921 - Jul 10, 02:35 UTCJul 10, 05:35 UTC3h 0m
2026-07-10 SWA921 CMH → DEN Jul 10, 02:34 UTCJul 10, 05:34 UTC3h 0m
2026-07-10 SWA921 - Jul 10, 00:50 UTCJul 10, 01:40 UTC50m
2026-07-09 SWA921 - Jul 9, 22:30 UTCJul 9, 23:25 UTC55m
2026-07-09 SWA966 - Jul 9, 19:50 UTCJul 9, 20:35 UTC45m
2026-07-09 SWA3594 - Jul 9, 15:10 UTCJul 9, 16:35 UTC1h 25m
2026-07-09 SWA3594 SAV → BWI Jul 9, 15:07 UTCJul 9, 16:24 UTC1h 17m
2026-07-09 SWA1093 - Jul 9, 12:50 UTCJul 9, 14:15 UTC1h 25m
2026-07-09 SWA3422 RDU → BWI Jul 9, 10:15 UTCJul 9, 10:55 UTC40m
2026-07-09 SWA2690 - Jul 9, 01:00 UTCJul 9, 02:15 UTC1h 15m
2026-07-08 SWA692 - Jul 8, 21:45 UTCJul 9, 00:05 UTC2h 20m
2026-07-08 SWA692 MDW → BDL Jul 8, 18:20 UTCJul 8, 20:05 UTC1h 45m
2026-07-08 SWA1198 - Jul 8, 16:30 UTCJul 8, 17:10 UTC40m
2026-07-08 SWA1198 CMH → MDW Jul 8, 16:25 UTCJul 8, 17:09 UTC44m
2026-07-08 SWA1198 DAL → CMH Jul 8, 13:25 UTCJul 8, 15:30 UTC2h 5m
2026-07-08 SWA1523 DEN → DAL Jul 8, 05:05 UTCJul 8, 06:30 UTC1h 25m
2026-07-08 SWA1523 DEN → DAL Jul 8, 05:01 UTCJul 8, 06:26 UTC1h 25m
2026-07-08 SWA2064 - Jul 8, 02:40 UTCJul 8, 04:05 UTC1h 25m
2026-07-08 SWA2064 OMA → DEN Jul 8, 02:37 UTCJul 8, 04:04 UTC1h 28m
2026-07-07 SWA2064 - Jul 7, 23:35 UTCJul 8, 01:55 UTC2h 20m
2026-07-07 SWA4380 - Jul 7, 20:45 UTCJul 7, 22:35 UTC1h 50m

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 N954WN page for operator, model, and routing details .

Mode-S AD4584 frequently asked

What is Mode-S code AD4584?
AD4584 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N954WN.
Where is Mode-S AD4584 registered?
Mode-S code AD4584 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 AD4584 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD4584, octal 53242604, decimal 11,355,524.
What flights does AD4584 operate?
Mode-S AD4584 has broadcast 20 distinct callsigns, including SWA823, SWA432, SWA1095, SWA3652, SWA3144.