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sensors Mode-S transponder

A5B954

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N468WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A5B954
Octal
51334524
Decimal
10,860,884
Country
US
Tail
N468WN
Type
B737
No current signal · last broadcast Jul 23, 16:55 UTC
Flights observed
681
Distinct callsigns
20
Country
US
Last broadcast
Jul 23, 16:55 UTC

Last known position

Most recent position reported by Mode-S A5B954.

Country allocation

The ICAO 24-bit address A5B954 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
SWA1706 - 6 2026-04-13
SWA148 Southwest Airlines 6 2026-06-15
SWA1015 - 6 2026-07-10
SWA654 - 5 2026-07-20
SWA1118 - 5 2026-06-27
SWA3877 - 4 2026-07-08
SWA3130 - 4 2026-06-15
SWA2909 - 4 2026-06-27
SWA2808 - 4 2026-04-13
SWA2700 - 4 2026-04-17
SWA2586 Southwest Airlines 4 2026-05-09
SWA1862 - 4 2026-07-11
SWA1768 Southwest Airlines 4 2026-05-24
SWA164 - 4 2026-07-10
SWA1363 Southwest Airlines 4 2026-05-01
SWA1297 - 4 2026-06-30
SWA1275 - 4 2026-06-26
SWA999 - 3 2026-06-30
SWA915 Southwest Airlines 3 2026-05-26
SWA868 Southwest Airlines 3 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 SWA8503 SEA → PAE Jul 23, 16:35 UTCJul 23, 16:55 UTC20m
2026-07-23 SWA8503 DEN → SEA Jul 23, 11:50 UTCJul 23, 14:20 UTC2h 30m
2026-07-23 SWA8503 DEN → SEA Jul 23, 11:46 UTCJul 23, 14:18 UTC2h 32m
2026-07-23 SWA2457 MDW → MCO Jul 23, 06:10 UTCJul 23, 06:15 UTC5m
2026-07-23 SWA2457 MDW → MCO Jul 23, 02:11 UTCJul 23, 05:55 UTC3h 44m
2026-07-23 SWA2457 MDW → MCO Jul 23, 02:15 UTCJul 23, 06:15 UTC4h 0m
2026-07-22 SWA933 - Jul 22, 21:30 UTCJul 23, 00:35 UTC3h 5m
2026-07-22 SWA933 DEN → LGA Jul 22, 21:24 UTCJul 23, 00:27 UTC3h 3m
2026-07-22 SWA335 LAX → SJC Jul 22, 18:30 UTCJul 22, 20:20 UTC1h 50m
2026-07-22 SWA4555 BUR → AUS Jul 22, 14:30 UTCJul 22, 17:15 UTC2h 45m
2026-07-22 SWA4555 BUR → AUS Jul 22, 14:29 UTCJul 22, 17:07 UTC2h 38m
2026-07-22 SWA3524 HOU → SDF Jul 22, 03:25 UTCJul 22, 04:15 UTC50m
2026-07-22 SWA1839 MDW → CLT Jul 22, 01:30 UTCJul 22, 02:40 UTC1h 10m
2026-07-21 SWA836 - Jul 21, 23:10 UTCJul 22, 00:20 UTC1h 10m
2026-07-21 SWA836 BUR → SJC Jul 21, 21:30 UTCJul 21, 22:15 UTC45m
2026-07-21 SWA1493 OAK → LAX Jul 21, 19:10 UTCJul 21, 20:15 UTC1h 5m
2026-07-21 SWA868 PHX → SNA Jul 21, 02:45 UTCJul 21, 05:50 UTC3h 5m
2026-07-20 SWA868 PHX → SNA Jul 20, 20:10 UTCJul 21, 01:25 UTC5h 15m
2026-07-20 SWA868 MHT → BWI Jul 20, 17:45 UTCJul 20, 19:05 UTC1h 20m
2026-07-20 SWA1003 - Jul 20, 15:45 UTCJul 20, 16:45 UTC1h 0m
2026-07-20 SWA4550 RDU → BWI Jul 20, 12:55 UTCJul 20, 13:40 UTC45m
2026-07-20 SWA161 - Jul 20, 03:20 UTCJul 20, 04:05 UTC45m
2026-07-20 SWA161 BWI → RDU Jul 20, 03:19 UTCJul 20, 04:03 UTC44m
2026-07-20 SWA654 SAV → BWI Jul 20, 01:00 UTCJul 20, 02:20 UTC1h 20m
2026-07-20 SWA654 SAV → BWI Jul 20, 01:00 UTCJul 20, 02:21 UTC1h 21m
2026-07-19 SWA654 STL → SAV Jul 19, 22:40 UTCJul 20, 00:15 UTC1h 35m
2026-07-19 SWA1371 SNA → OAK Jul 19, 20:50 UTCJul 19, 21:40 UTC50m
2026-07-19 SWA237 - Jul 19, 18:20 UTCJul 19, 19:25 UTC1h 5m
2026-07-19 SWA469 - Jul 19, 15:45 UTCJul 19, 16:45 UTC1h 0m
2026-07-19 SWA4051 - Jul 19, 12:50 UTCJul 19, 14:05 UTC1h 15m
2026-07-19 SWA2912 - Jul 19, 03:20 UTCJul 19, 04:40 UTC1h 20m
2026-07-18 SWA2920 SJC → AUS Jul 18, 23:15 UTCJul 19, 01:30 UTC2h 15m
2026-07-18 SWA2906 - Jul 18, 19:30 UTCJul 18, 21:55 UTC2h 25m
2026-07-18 SWA440 - Jul 18, 17:00 UTCJul 18, 18:05 UTC1h 5m
2026-07-18 SWA436 - Jul 18, 14:45 UTCJul 18, 15:55 UTC1h 10m
2026-07-17 SWA692 - Jul 17, 23:45 UTCJul 18, 02:40 UTC2h 55m
2026-07-17 SWA692 - Jul 17, 20:20 UTCJul 17, 22:10 UTC1h 50m
2026-07-17 SWA1895 - Jul 17, 16:59 UTCJul 17, 17:35 UTC35m
2026-07-17 SWA2779 - Jul 17, 15:35 UTCJul 17, 16:04 UTC30m
2026-07-17 SWA1781 - Jul 17, 13:05 UTCJul 17, 13:50 UTC45m
2026-07-17 SWA4822 - Jul 17, 04:59 UTCJul 17, 06:10 UTC1h 10m
2026-07-17 SWA4822 STL → DTW Jul 17, 04:59 UTCJul 17, 06:10 UTC1h 11m
2026-07-17 SWA2921 DAL → STL Jul 17, 01:29 UTCJul 17, 02:54 UTC1h 25m
2026-07-16 SWA4127 - Jul 16, 22:30 UTCJul 16, 23:44 UTC1h 15m
2026-07-16 SWA4127 MEM → DAL Jul 16, 22:28 UTCJul 16, 23:30 UTC1h 3m
2026-07-16 SWA888 - Jul 16, 19:50 UTCJul 16, 20:49 UTC1h 0m
2026-07-16 SWA4466 - Jul 16, 16:40 UTCJul 16, 18:19 UTC1h 40m
2026-07-16 SWA4466 TPA → SDF Jul 16, 14:15 UTCJul 16, 15:49 UTC1h 35m
2026-07-16 SWA3022 MSY → TPA Jul 16, 11:25 UTCJul 16, 12:34 UTC1h 10m
2026-07-16 SWA2470 LGA → MSY Jul 16, 01:30 UTCJul 16, 04:00 UTC2h 30m

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 N468WN page for operator, model, and routing details .

Mode-S A5B954 frequently asked

What is Mode-S code A5B954?
A5B954 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N468WN.
Where is Mode-S A5B954 registered?
Mode-S code A5B954 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 A5B954 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 16:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5B954, octal 51334524, decimal 10,860,884.
What flights does A5B954 operate?
Mode-S A5B954 has broadcast 20 distinct callsigns, including SWA1706, SWA148, SWA1015, SWA654, SWA1118.