Apparatus

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sensors Mode-S transponder

A2B759

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N274WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A2B759
Octal
50533531
Decimal
10,663,769
Country
US
Tail
N274WN
Type
B737
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
770
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A2B759.

Country allocation

The ICAO 24-bit address A2B759 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
SWA1654 - 8 2026-07-05
SWA1268 - 8 2026-07-09
SWA1149 Southwest Airlines 8 2026-05-06
SWA470 Southwest Airlines 6 2026-05-18
SWA3546 - 6 2026-06-26
SWA342 - 6 2026-07-14
SWA1518 Southwest Airlines 6 2026-05-29
SWA801 Southwest Airlines 5 2026-06-07
SWA670 Southwest Airlines 5 2026-07-25
SWA585 - 5 2026-07-19
SWA428 Southwest Airlines 5 2026-05-08
SWA3916 - 5 2026-06-24
SWA3709 - 5 2026-07-11
SWA1083 Southwest Airlines 5 2026-05-03
SWA579 - 4 2026-06-19
SWA452 - 4 2026-07-10
SWA426 Southwest Airlines 4 2026-05-04
SWA369 Southwest Airlines 4 2026-05-29
SWA3566 Southwest Airlines 4 2026-05-25
SWA3335 Southwest Airlines 4 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2048 AUS → OAK Jul 26, 20:30 UTCJul 26, 22:00 UTC1h 30m
2026-07-26 SWA2591 DEN → CLE Jul 26, 17:55 UTCJul 26, 19:00 UTC1h 5m
2026-07-26 SWA106 BUR → SJC Jul 26, 01:00 UTCJul 26, 01:05 UTC5m
2026-07-25 SWA106 BUR → SJC Jul 25, 22:35 UTCJul 26, 01:05 UTC2h 30m
2026-07-25 SWA106 BUR → SJC Jul 25, 22:30 UTCJul 26, 00:43 UTC2h 13m
2026-07-25 SWA106 BUR → SJC Jul 25, 21:05 UTCJul 25, 21:45 UTC40m
2026-07-25 SWA37 DAL → HOU Jul 25, 18:00 UTCJul 25, 20:10 UTC2h 10m
2026-07-25 SWA431 BUR → SJC Jul 25, 15:15 UTCJul 25, 16:40 UTC1h 25m
2026-07-25 SWA2446 STL → SJC Jul 25, 11:35 UTCJul 25, 12:45 UTC1h 10m
2026-07-25 SWA1574 LAS → AUS Jul 25, 03:45 UTCJul 25, 04:35 UTC50m
2026-07-25 SWA670 SJC → BOI Jul 25, 00:50 UTCJul 25, 02:45 UTC1h 55m
2026-07-24 SWA670 SJC → BOI Jul 24, 22:45 UTCJul 24, 23:45 UTC1h 0m
2026-07-24 SWA670 SJC → BOI Jul 24, 21:10 UTCJul 24, 22:00 UTC50m
2026-07-24 SWA670 SJC → BOI Jul 24, 16:45 UTCJul 24, 20:00 UTC3h 15m
2026-07-24 SWA670 SJC → BOI Jul 24, 15:20 UTCJul 24, 15:50 UTC30m
2026-07-24 SWA1785 LAS → SFO Jul 24, 12:55 UTCJul 24, 14:00 UTC1h 5m
2026-07-24 SWA1785 LAS → SFO Jul 24, 12:51 UTCJul 24, 13:57 UTC1h 6m
2026-07-24 SWA1937 OAK → SEA Jul 24, 01:05 UTCJul 24, 02:35 UTC1h 30m
2026-07-23 SWA1937 OAK → SEA Jul 23, 22:00 UTCJul 24, 00:10 UTC2h 10m
2026-07-23 SWA1922 SJD → PHX Jul 23, 15:05 UTCJul 23, 20:05 UTC5h 0m
2026-07-23 SWA1265 DAL → AUS Jul 23, 12:50 UTCJul 23, 13:30 UTC40m
2026-07-23 SWA1265 DAL → AUS Jul 23, 12:49 UTCJul 23, 13:21 UTC32m
2026-07-23 SWA1396 PVD → BWI Jul 23, 10:15 UTCJul 23, 11:25 UTC1h 10m
2026-07-22 SWA2368 - Jul 22, 14:35 UTCJul 22, 17:20 UTC2h 45m
2026-07-22 SWA130 - Jul 22, 12:05 UTCJul 22, 13:15 UTC1h 10m
2026-07-21 SWA284 - Jul 21, 13:25 UTCJul 21, 15:00 UTC1h 35m
2026-07-21 SWA3267 BUR → OAK Jul 21, 09:20 UTCJul 21, 11:40 UTC2h 20m
2026-07-21 SWA1416 CVG → BWI Jul 21, 02:25 UTCJul 21, 04:25 UTC2h 0m
2026-07-20 SWA1416 CVG → BWI Jul 20, 23:00 UTCJul 21, 01:10 UTC2h 10m
2026-07-20 SWA2116 LAX → OAK Jul 20, 19:20 UTCJul 20, 20:55 UTC1h 35m
2026-07-20 SWA2116 LAX → OAK Jul 20, 19:17 UTCJul 20, 20:56 UTC1h 39m
2026-07-20 SWA2116 LAX → OAK Jul 20, 17:05 UTCJul 20, 18:20 UTC1h 15m
2026-07-19 SWA172 - Jul 19, 22:35 UTCJul 20, 00:30 UTC1h 55m
2026-07-19 SWA1266 LGA → MSY Jul 19, 19:45 UTCJul 19, 21:20 UTC1h 35m
2026-07-19 SWA1266 LGA → MSY Jul 19, 19:40 UTCJul 19, 21:15 UTC1h 35m
2026-07-19 SWA1266 LGA → MSY Jul 19, 16:25 UTCJul 19, 18:45 UTC2h 20m
2026-07-19 SWA1828 EUG → DEN Jul 19, 12:35 UTCJul 19, 14:40 UTC2h 5m
2026-07-19 SWA291 RNO → SAN Jul 19, 04:10 UTCJul 19, 05:00 UTC50m
2026-07-19 SWA585 LGB → SMF Jul 19, 02:20 UTCJul 19, 03:20 UTC1h 0m
2026-07-19 SWA585 LAS → LGB Jul 19, 00:55 UTCJul 19, 01:35 UTC40m
2026-07-18 SWA585 - Jul 18, 19:05 UTCJul 18, 23:55 UTC4h 50m
2026-07-18 SWA585 - Jul 18, 15:20 UTCJul 18, 17:25 UTC2h 5m
2026-07-18 SWA585 DAL → MIA Jul 18, 11:30 UTCJul 18, 14:15 UTC2h 45m
2026-07-17 SWA1859 BDL → BWI Jul 17, 23:00 UTCJul 18, 02:25 UTC3h 25m
2026-07-17 SWA2165 SJC → PDX Jul 17, 20:29 UTCJul 17, 21:20 UTC50m
2026-07-17 SWA2165 SJC → PDX Jul 17, 20:26 UTCJul 17, 21:16 UTC50m
2026-07-17 SWA3765 OAK → LAS Jul 17, 18:19 UTCJul 17, 19:15 UTC55m
2026-07-17 SWA3765 OAK → LAS Jul 17, 18:15 UTCJul 17, 19:12 UTC57m
2026-07-17 SWA2638 SNA → SJC Jul 17, 16:15 UTCJul 17, 17:09 UTC55m
2026-07-17 SWA3442 - Jul 17, 14:10 UTCJul 17, 15:10 UTC1h 0m

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 N274WN page for operator, model, and routing details .

Mode-S A2B759 frequently asked

What is Mode-S code A2B759?
A2B759 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N274WN.
Where is Mode-S A2B759 registered?
Mode-S code A2B759 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 A2B759 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B759, octal 50533531, decimal 10,663,769.
What flights does A2B759 operate?
Mode-S A2B759 has broadcast 20 distinct callsigns, including SWA1654, SWA1268, SWA1149, SWA470, SWA3546.