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sensors Mode-S transponder

A27380

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N257WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A27380
Octal
50471600
Decimal
10,646,400
Country
US
Tail
N257WN
Type
B737
Transponder active on ground
Flights observed
441
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A27380.

Country allocation

The ICAO 24-bit address A27380 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
SWA1758 Southwest Airlines 10 2026-05-07
SWA700 Southwest Airlines 8 2026-05-12
SWA1091 Southwest Airlines 6 2026-04-17
SWA3419 Southwest Airlines 5 2026-05-23
SWA2137 Southwest Airlines 5 2026-05-22
SWA1655 Southwest Airlines 5 2026-04-25
SWA957 Southwest Airlines 4 2026-04-15
SWA3719 - 4 2026-04-16
SWA3528 Southwest Airlines 4 2026-04-21
SWA2720 Southwest Airlines 4 2026-04-28
SWA2715 Southwest Airlines 4 2026-04-30
SWA2585 Southwest Airlines 4 2026-04-17
SWA247 - 4 2026-04-13
SWA2131 Southwest Airlines 4 2026-04-13
SWA820 Southwest Airlines 3 2026-05-23
SWA681 Southwest Airlines 3 2026-05-24
SWA558 Southwest Airlines 3 2026-05-04
SWA472 Southwest Airlines 3 2026-04-13
SWA4500 Southwest Airlines 3 2026-05-12
SWA4 - 3 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA3164 - Jul 14, 02:25 UTCJul 14, 03:15 UTC50m
2026-07-14 SWA3691 SJC → ONT Jul 14, 00:35 UTCJul 14, 01:45 UTC1h 10m
2026-07-13 SWA3539 - Jul 13, 22:45 UTCJul 13, 23:40 UTC55m
2026-07-13 SWA3539 SAN → SJC Jul 13, 22:44 UTCJul 13, 23:40 UTC56m
2026-07-13 SWA4846 PHX → SAN Jul 13, 20:55 UTCJul 13, 21:45 UTC50m
2026-07-13 SWA2984 - Jul 13, 17:45 UTCJul 13, 19:55 UTC2h 10m
2026-07-13 SWA2984 - Jul 13, 15:55 UTCJul 13, 16:50 UTC55m
2026-07-13 SWA4316 - Jul 13, 13:40 UTCJul 13, 14:45 UTC1h 5m
2026-07-13 SWA2845 - Jul 13, 03:10 UTCJul 13, 04:00 UTC50m
2026-07-13 SWA2845 MDW → OMA Jul 13, 03:06 UTCJul 13, 04:05 UTC59m
2026-07-13 SWA1200 CMH → MDW Jul 13, 00:13 UTCJul 13, 01:01 UTC48m
2026-07-12 SWA1509 DEN → CMH Jul 12, 21:00 UTCJul 12, 23:25 UTC2h 25m
2026-07-12 SWA1423 - Jul 12, 18:10 UTCJul 12, 19:55 UTC1h 45m
2026-07-12 SWA1423 - Jul 12, 16:25 UTCJul 12, 17:05 UTC40m
2026-07-12 SWA4176 OAK → SAN Jul 12, 13:38 UTCJul 12, 14:51 UTC1h 13m
2026-07-12 SWA4176 OAK → SAN Jul 12, 13:40 UTCJul 12, 14:50 UTC1h 10m
2026-07-11 SWA8502 - Jul 11, 15:20 UTCJul 11, 17:15 UTC1h 55m
2026-06-09 SWA8515 OAK → LAS Jun 9, 06:35 UTCJun 9, 09:15 UTC2h 40m
2026-06-09 SWA3696 LAX → SJC Jun 9, 04:10 UTCJun 9, 05:40 UTC1h 30m
2026-06-09 SWA3541 BDL → MCO Jun 9, 02:15 UTCJun 9, 03:20 UTC1h 5m
2026-06-08 SWA3701 CMH → MDW Jun 8, 22:30 UTCJun 8, 23:35 UTC1h 5m
2026-06-08 SWA4223 MHT → BWI Jun 8, 20:25 UTCJun 8, 21:30 UTC1h 5m
2026-06-08 SWA4223 MHT → BWI Jun 8, 20:25 UTCJun 8, 21:28 UTC1h 3m
2026-06-08 SWA1097 BUR → SFO Jun 8, 18:35 UTCJun 8, 19:30 UTC55m
2026-06-08 SWA1097 BUR → SFO Jun 8, 18:32 UTCJun 8, 19:25 UTC53m
2026-06-08 SWA3555 SAV → BNA Jun 8, 16:35 UTCJun 8, 17:25 UTC50m
2026-06-08 SWA4331 CMH → FLL Jun 8, 13:20 UTCJun 8, 15:15 UTC1h 55m
2026-06-08 SWA1250 LIT → STL Jun 8, 02:30 UTCJun 8, 04:10 UTC1h 40m
2026-06-08 SWA1250 LIT → STL Jun 8, 02:28 UTCJun 8, 04:09 UTC1h 42m
2026-06-07 SWA1250 LIT → STL Jun 7, 22:25 UTCJun 8, 01:35 UTC3h 10m
2026-06-07 SWA2693 LGB → SJC Jun 7, 18:55 UTCJun 7, 21:05 UTC2h 10m
2026-06-07 SWA4737 HOU → PHX Jun 7, 15:45 UTCJun 7, 17:45 UTC2h 0m
2026-06-07 SWA757 LGA → DAL Jun 7, 13:25 UTCJun 7, 14:05 UTC40m
2026-06-07 SWA2067 STL → CHS Jun 7, 10:50 UTCJun 7, 11:40 UTC50m
2026-06-06 SWA2986 BUR → OAK Jun 6, 22:05 UTCJun 7, 00:19 UTC2h 15m
2026-06-06 SWA2986 BUR → OAK Jun 6, 22:04 UTCJun 7, 00:10 UTC2h 6m
2026-06-06 SWA4038 AUS → SAN Jun 6, 19:54 UTCJun 6, 21:04 UTC1h 10m
2026-06-06 SWA3172 PHX → MSP Jun 6, 16:04 UTCJun 6, 18:45 UTC2h 40m
2026-06-06 SWA3172 PHX → MSP Jun 6, 16:01 UTCJun 6, 18:40 UTC2h 39m
2026-06-06 SWA4181 OAK → PHX Jun 6, 12:14 UTCJun 6, 14:54 UTC2h 40m
2026-06-06 SWA4181 OAK → PHX Jun 6, 12:13 UTCJun 6, 14:54 UTC2h 41m
2026-06-06 SWA4929 BWI → LAX Jun 6, 09:09 UTCJun 6, 11:00 UTC1h 50m
2026-06-06 SWA4804 ATL → DEN Jun 6, 00:40 UTCJun 6, 04:10 UTC3h 30m
2026-06-05 SWA2021 SJD → PHX Jun 5, 18:45 UTCJun 5, 23:20 UTC4h 35m
2026-06-05 SWA3016 MDW → TPA Jun 5, 13:50 UTCJun 5, 17:15 UTC3h 25m
2026-06-05 SWA3016 MDW → TPA Jun 5, 13:47 UTCJun 5, 17:13 UTC3h 27m
2026-06-05 SWA3016 MDW → TPA Jun 5, 12:10 UTCJun 5, 12:55 UTC45m
2026-06-05 SWA2756 DAL → SLC Jun 5, 00:55 UTCJun 5, 01:35 UTC40m
2026-06-05 SWA2756 DAL → SLC Jun 5, 00:51 UTCJun 5, 01:29 UTC39m
2026-06-04 SWA2756 DAL → SLC Jun 4, 22:00 UTCJun 4, 23:40 UTC1h 40m

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 N257WN page for operator, model, and routing details .

Mode-S A27380 frequently asked

What is Mode-S code A27380?
A27380 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N257WN.
Where is Mode-S A27380 registered?
Mode-S code A27380 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 A27380 broadcasting right now?
Mode-S A27380 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A27380, octal 50471600, decimal 10,646,400.
What flights does A27380 operate?
Mode-S A27380 has broadcast 20 distinct callsigns, including SWA1758, SWA700, SWA1091, SWA3419, SWA2137.