Apparatus

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sensors Mode-S transponder

A2B3A2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N273WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A2B3A2
Octal
50531642
Decimal
10,662,818
Country
US
Tail
N273WN
Type
B737
Broadcasting now · callsign SWA792 · 11,150 ft
Flights observed
706
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Current position

A2B3A2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2B3A2 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
SWA1468 Southwest Airlines 6 2026-06-21
SWA1278 Southwest Airlines 6 2026-05-06
SWA3419 Southwest Airlines 5 2026-05-02
SWA3118 Southwest Airlines 5 2026-04-19
SWA2986 - 5 2026-07-10
SWA2559 - 5 2026-06-28
SWA149 - 5 2026-07-14
SWA940 - 4 2026-07-06
SWA9003 Southwest Airlines 4 2026-07-24
SWA52 - 4 2026-07-08
SWA4355 Southwest Airlines 4 2026-07-22
SWA4085 - 4 2026-06-29
SWA4007 Southwest Airlines 4 2026-04-27
SWA285 - 4 2026-06-19
SWA250 Southwest Airlines 4 2026-04-24
SWA2420 Southwest Airlines 4 2026-05-04
SWA2242 Southwest Airlines 4 2026-05-29
SWA194 Southwest Airlines 4 2026-07-19
SWA1795 Southwest Airlines 4 2026-06-06
SWA1341 - 4 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3888 IAH → DEN Jul 26, 19:00 UTCJul 26, 22:30 UTC3h 30m
2026-07-26 SWA3888 IAH → DEN Jul 26, 17:00 UTCJul 26, 17:45 UTC45m
2026-07-26 SWA3888 IAH → DEN Jul 26, 12:50 UTCJul 26, 16:05 UTC3h 15m
2026-07-26 SWA257 RNO → LAS Jul 26, 03:55 UTCJul 26, 05:00 UTC1h 5m
2026-07-26 SWA257 RNO → LAS Jul 26, 03:51 UTCJul 26, 04:49 UTC58m
2026-07-26 SWA2233 DCA → CMH Jul 26, 02:00 UTCJul 26, 03:00 UTC1h 0m
2026-07-25 SWA3053 SAN → SFO Jul 25, 23:25 UTCJul 26, 00:30 UTC1h 5m
2026-07-25 SWA805 LAX → SFO Jul 25, 21:25 UTCJul 25, 22:15 UTC50m
2026-07-25 SWA805 LAX → SFO Jul 25, 21:22 UTCJul 25, 22:10 UTC48m
2026-07-25 SWA1740 MHT → MDW Jul 25, 19:30 UTCJul 25, 20:25 UTC55m
2026-07-25 SWA1699 RDU → DAL Jul 25, 17:20 UTCJul 25, 18:30 UTC1h 10m
2026-07-25 SWA1699 RDU → DAL Jul 25, 17:19 UTCJul 25, 18:26 UTC1h 7m
2026-07-25 SWA1699 RDU → DAL Jul 25, 14:15 UTCJul 25, 16:10 UTC1h 55m
2026-07-25 SWA2545 PHX → DEN Jul 25, 11:30 UTCJul 25, 12:50 UTC1h 20m
2026-07-25 SWA3514 SNA → SJC Jul 25, 04:20 UTCJul 25, 04:55 UTC35m
2026-07-25 SWA3514 SNA → SJC Jul 25, 00:40 UTCJul 25, 03:30 UTC2h 50m
2026-07-24 SWA9003 PHX → DEN Jul 24, 22:35 UTCJul 24, 23:50 UTC1h 15m
2026-07-24 SWA9003 PHX → DEN Jul 24, 22:30 UTCJul 24, 23:45 UTC1h 15m
2026-07-24 SWA9003 PHX → DEN Jul 24, 17:35 UTCJul 24, 21:15 UTC3h 40m
2026-07-24 SWA9003 PHX → DEN Jul 24, 15:50 UTCJul 24, 16:40 UTC50m
2026-07-24 SWA2314 MDW → PIT Jul 24, 02:55 UTCJul 24, 03:40 UTC45m
2026-07-23 SWA3846 RNO → LAS Jul 23, 23:10 UTCJul 23, 23:50 UTC40m
2026-07-23 SWA3087 HOU → ATL Jul 23, 21:05 UTCJul 23, 22:15 UTC1h 10m
2026-07-23 SWA3087 HOU → ATL Jul 23, 21:05 UTCJul 23, 22:11 UTC1h 6m
2026-07-23 SWA4893 CLE → BNA Jul 23, 19:05 UTCJul 23, 19:55 UTC50m
2026-07-23 SWA1569 PHL → MDW Jul 23, 15:45 UTCJul 23, 17:40 UTC1h 55m
2026-07-23 SWA3615 BNA → TPA Jul 23, 12:30 UTCJul 23, 14:35 UTC2h 5m
2026-07-23 SWA4144 MDW → BNA Jul 23, 03:40 UTCJul 23, 07:35 UTC3h 55m
2026-07-23 SWA1200 SJC → PDX Jul 23, 00:30 UTCJul 23, 01:25 UTC55m
2026-07-23 SWA1200 SJC → PDX Jul 23, 00:25 UTCJul 23, 01:22 UTC57m
2026-07-22 SWA4355 BUR → OAK Jul 22, 22:40 UTCJul 22, 23:35 UTC55m
2026-07-22 SWA4355 BUR → OAK Jul 22, 22:38 UTCJul 22, 23:34 UTC56m
2026-07-22 SWA4355 BUR → OAK Jul 22, 19:20 UTCJul 22, 21:35 UTC2h 15m
2026-07-22 SWA4355 BUR → OAK Jul 22, 15:55 UTCJul 22, 18:20 UTC2h 25m
2026-07-22 SWA4456 SJC → PDX Jul 22, 12:20 UTCJul 22, 14:00 UTC1h 40m
2026-07-21 SWA4795 PHX → RDU Jul 21, 21:10 UTCJul 21, 22:50 UTC1h 40m
2026-07-21 SWA4795 PHX → RDU Jul 21, 21:05 UTCJul 21, 22:46 UTC1h 41m
2026-07-21 SWA66 HOU → DAL Jul 21, 18:45 UTCJul 21, 20:15 UTC1h 30m
2026-07-21 SWA66 HOU → DAL Jul 21, 16:20 UTCJul 21, 17:45 UTC1h 25m
2026-07-21 SWA66 HOU → DAL Jul 21, 14:20 UTCJul 21, 15:10 UTC50m
2026-07-21 SWA4090 MDW → MSY Jul 21, 11:55 UTCJul 21, 12:55 UTC1h 0m
2026-07-21 SWA1551 MCI → LAS Jul 21, 02:40 UTCJul 21, 03:35 UTC55m
2026-07-20 SWA504 STL → SAN Jul 20, 23:15 UTCJul 21, 01:30 UTC2h 14m
2026-07-20 SWA481 SAN → OAK Jul 20, 19:25 UTCJul 20, 21:25 UTC2h 0m
2026-07-20 SWA2570 - Jul 20, 16:10 UTCJul 20, 18:20 UTC2h 10m
2026-07-19 SWA194 DEN → SFO Jul 19, 23:05 UTCJul 20, 00:30 UTC1h 25m
2026-07-19 SWA194 DEN → SFO Jul 19, 23:03 UTCJul 20, 00:33 UTC1h 30m
2026-07-19 SWA194 DEN → SFO Jul 19, 21:15 UTCJul 19, 21:40 UTC25m
2026-07-19 SWA194 DEN → SFO Jul 19, 16:45 UTCJul 19, 18:20 UTC1h 35m
2026-07-19 SWA3968 TPA → DCA Jul 19, 13:20 UTCJul 19, 15:10 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 N273WN page for operator, model, and routing details .

Mode-S A2B3A2 frequently asked

What is Mode-S code A2B3A2?
A2B3A2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N273WN.
Where is Mode-S A2B3A2 registered?
Mode-S code A2B3A2 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 A2B3A2 broadcasting right now?
Yes. Mode-S A2B3A2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B3A2, octal 50531642, decimal 10,662,818.
What flights does A2B3A2 operate?
Mode-S A2B3A2 has broadcast 20 distinct callsigns, including SWA1468, SWA1278, SWA3419, SWA3118, SWA2986.