Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A235B7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N241WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A235B7
Octal
50432667
Decimal
10,630,583
Country
US
Tail
N241WN
Type
B737
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
789
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S A235B7.

Country allocation

The ICAO 24-bit address A235B7 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
SWA1313 Southwest Airlines 7 2026-04-26
SWA487 Southwest Airlines 6 2026-05-18
SWA3563 - 6 2026-06-25
SWA2154 - 6 2026-06-15
SWA1426 Southwest Airlines 6 2026-06-07
SWA1037 - 6 2026-07-18
SWA3130 Southwest Airlines 5 2026-07-20
SWA2223 - 5 2026-04-13
SWA2214 - 5 2026-07-11
SWA1269 - 5 2026-06-23
SWA1082 Southwest Airlines 5 2026-04-16
SWA983 - 4 2026-07-10
SWA3154 - 4 2026-06-26
SWA300 Southwest Airlines 4 2026-06-11
SWA2808 Southwest Airlines 4 2026-05-18
SWA2278 Southwest Airlines 4 2026-06-02
SWA1958 Southwest Airlines 4 2026-05-30
SWA1565 - 4 2026-06-22
SWA1562 Southwest Airlines 4 2026-04-15
SWA1467 - 4 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3763 TPA → BWI Jul 26, 20:40 UTCJul 26, 21:45 UTC1h 5m
2026-07-26 SWA4284 STL → MSY Jul 26, 17:25 UTCJul 26, 17:45 UTC20m
2026-07-26 SWA4284 STL → MSY Jul 26, 17:21 UTCJul 26, 19:25 UTC2h 4m
2026-07-26 SWA827 DEN → PHL Jul 26, 15:25 UTCJul 26, 16:25 UTC1h 0m
2026-07-26 SWA4228 MYR → MDW Jul 26, 02:45 UTCJul 26, 03:35 UTC50m
2026-07-26 SWA4228 MYR → MDW Jul 26, 02:38 UTCJul 26, 03:30 UTC52m
2026-07-25 SWA3558 ALB → BWI Jul 25, 23:40 UTCJul 26, 01:45 UTC2h 5m
2026-07-25 SWA1680 RSW → BWI Jul 25, 18:45 UTCJul 25, 22:20 UTC3h 35m
2026-07-25 SWA1680 RSW → BWI Jul 25, 16:00 UTCJul 25, 17:50 UTC1h 50m
2026-07-25 SWA1680 RSW → BWI Jul 25, 13:15 UTCJul 25, 15:00 UTC1h 45m
2026-07-25 SWA3388 ABQ → MDW Jul 25, 11:15 UTCJul 25, 11:50 UTC35m
2026-07-25 SWA1125 LGB → SJC Jul 25, 01:20 UTCJul 25, 02:25 UTC1h 5m
2026-07-24 SWA4616 DAL → DEN Jul 24, 22:50 UTCJul 25, 00:10 UTC1h 20m
2026-07-24 SWA4616 DAL → DEN Jul 24, 22:49 UTCJul 25, 00:05 UTC1h 16m
2026-07-24 SWA4479 ALB → BWI Jul 24, 20:20 UTCJul 24, 21:50 UTC1h 30m
2026-07-24 SWA1185 DEN → LGA Jul 24, 18:20 UTCJul 24, 19:10 UTC50m
2026-07-24 SWA1185 DEN → LGA Jul 24, 18:19 UTCJul 24, 19:08 UTC49m
2026-07-24 SWA1429 BHM → MDW Jul 24, 15:55 UTCJul 24, 17:05 UTC1h 10m
2026-07-24 SWA1429 BHM → MDW Jul 24, 15:54 UTCJul 24, 17:00 UTC1h 6m
2026-07-24 SWA222 ATL → STL Jul 24, 12:40 UTCJul 24, 14:55 UTC2h 15m
2026-07-24 SWA222 ATL → STL Jul 24, 12:40 UTCJul 24, 14:49 UTC2h 9m
2026-07-24 SWA4942 HOU → SMF Jul 24, 10:20 UTCJul 24, 11:25 UTC1h 5m
2026-07-24 SWA1515 SAN → AUS Jul 24, 04:45 UTCJul 24, 05:15 UTC30m
2026-07-24 SWA1515 SAN → AUS Jul 24, 04:40 UTCJul 24, 05:13 UTC33m
2026-07-24 SWA4553 MDW → SDF Jul 24, 02:50 UTCJul 24, 03:35 UTC45m
2026-07-24 SWA4415 PHX → CLE Jul 24, 01:30 UTCJul 24, 02:15 UTC45m
2026-07-24 SWA4415 PHX → CLE Jul 24, 01:29 UTCJul 24, 02:10 UTC41m
2026-07-23 SWA1316 SJC → BOI Jul 23, 23:35 UTCJul 24, 00:25 UTC50m
2026-07-23 SWA1316 SJC → BOI Jul 23, 20:50 UTCJul 23, 22:40 UTC1h 50m
2026-07-23 SWA4284 STL → MSY Jul 23, 17:40 UTCJul 23, 19:45 UTC2h 5m
2026-07-23 SWA2386 DEN → SFO Jul 23, 14:03 UTCJul 23, 16:21 UTC2h 19m
2026-07-23 SWA2386 DEN → SFO Jul 23, 14:05 UTCJul 23, 16:25 UTC2h 20m
2026-07-23 SWA2664 BWI → MCI Jul 23, 09:10 UTCJul 23, 12:50 UTC3h 40m
2026-07-22 SWA3554 SAN → SFO Jul 22, 23:50 UTCJul 23, 01:20 UTC1h 30m
2026-07-22 SWA2717 DAL → SAN Jul 22, 20:40 UTCJul 22, 21:55 UTC1h 15m
2026-07-22 SWA2717 DAL → SAN Jul 22, 20:35 UTCJul 22, 21:50 UTC1h 16m
2026-07-22 SWA2717 DAL → SAN Jul 22, 18:45 UTCJul 22, 19:40 UTC55m
2026-07-22 SWA3010 OAK → DAL Jul 22, 16:40 UTCJul 22, 17:35 UTC55m
2026-07-22 SWA3010 OAK → DAL Jul 22, 14:25 UTCJul 22, 15:35 UTC1h 10m
2026-07-22 SWA4090 MDW → MSY Jul 22, 11:55 UTCJul 22, 13:00 UTC1h 5m
2026-07-22 SWA1551 MCI → LAS Jul 22, 02:00 UTCJul 22, 02:55 UTC55m
2026-07-21 SWA2747 BOS → DEN Jul 21, 22:05 UTCJul 22, 00:40 UTC2h 35m
2026-07-21 SWA2747 BOS → DEN Jul 21, 22:05 UTCJul 22, 00:37 UTC2h 33m
2026-07-21 SWA3382 MDW → LGA Jul 21, 18:57 UTCJul 21, 20:50 UTC1h 53m
2026-07-21 SWA3382 MDW → LGA Jul 21, 19:00 UTCJul 21, 20:45 UTC1h 45m
2026-07-21 SWA1677 CVG → MCO Jul 21, 16:55 UTCJul 21, 17:50 UTC55m
2026-07-21 SWA813 BOS → MDW Jul 21, 14:35 UTCJul 21, 15:45 UTC1h 10m
2026-07-21 SWA3443 - Jul 21, 04:45 UTCJul 21, 05:45 UTC1h 0m
2026-07-21 SWA3443 SAT → LAS Jul 21, 04:40 UTCJul 21, 05:40 UTC1h 0m
2026-07-21 SWA4875 CMH → MDW Jul 21, 02:55 UTCJul 21, 04:00 UTC1h 5m

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 N241WN page for operator, model, and routing details .

Mode-S A235B7 frequently asked

What is Mode-S code A235B7?
A235B7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N241WN.
Where is Mode-S A235B7 registered?
Mode-S code A235B7 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 A235B7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A235B7, octal 50432667, decimal 10,630,583.
What flights does A235B7 operate?
Mode-S A235B7 has broadcast 20 distinct callsigns, including SWA1313, SWA487, SWA3563, SWA2154, SWA1426.