Apparatus

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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
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
545
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

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
SWA10 - 5 2026-07-15
SWA957 Southwest Airlines 4 2026-04-15
SWA3719 - 4 2026-04-16
SWA3528 Southwest Airlines 4 2026-04-21
SWA351 Southwest Airlines 4 2026-07-20
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
SWA1218 Southwest Airlines 4 2026-07-22
SWA888 Southwest Airlines 3 2026-07-25
SWA820 Southwest Airlines 3 2026-05-23
SWA681 Southwest Airlines 3 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA279 SJC → SAN Jul 26, 19:30 UTCJul 26, 21:15 UTC1h 45m
2026-07-26 SWA2263 BWI → BDL Jul 26, 16:30 UTCJul 26, 18:15 UTC1h 45m
2026-07-26 SWA2763 LAS → OAK Jul 26, 13:05 UTCJul 26, 14:55 UTC1h 50m
2026-07-26 SWA183 OAK → LAS Jul 26, 11:15 UTCJul 26, 12:00 UTC45m
2026-07-25 SWA1429 BHM → MDW Jul 25, 23:25 UTCJul 26, 00:50 UTC1h 25m
2026-07-25 SWA102 DEN → ORD Jul 25, 20:35 UTCJul 25, 21:55 UTC1h 20m
2026-07-25 SWA102 DEN → ORD Jul 25, 20:29 UTCJul 25, 22:09 UTC1h 40m
2026-07-25 SWA2069 SMF → SEA Jul 25, 18:25 UTCJul 25, 19:40 UTC1h 15m
2026-07-25 SWA2069 SMF → SEA Jul 25, 18:20 UTCJul 25, 19:38 UTC1h 18m
2026-07-25 SWA888 ATL → MSY Jul 25, 16:15 UTCJul 25, 17:20 UTC1h 5m
2026-07-25 SWA888 ATL → MSY Jul 25, 14:25 UTCJul 25, 15:05 UTC40m
2026-07-25 SWA888 ATL → MSY Jul 25, 11:25 UTCJul 25, 13:20 UTC1h 55m
2026-07-25 SWA3190 HOU → BNA Jul 25, 02:30 UTCJul 25, 03:00 UTC30m
2026-07-24 SWA3226 PDX → DEN Jul 24, 23:45 UTCJul 25, 01:25 UTC1h 40m
2026-07-24 SWA4948 LAS → HNL Jul 24, 21:18 UTCJul 24, 22:40 UTC1h 22m
2026-07-24 SWA4948 LAS → HNL Jul 24, 21:20 UTCJul 24, 22:45 UTC1h 25m
2026-07-24 SWA4996 RNO → PHX Jul 24, 18:32 UTCJul 24, 20:19 UTC1h 47m
2026-07-24 SWA4996 RNO → PHX Jul 24, 18:35 UTCJul 24, 20:30 UTC1h 55m
2026-07-24 SWA3664 DAL → LGA Jul 24, 13:50 UTCJul 24, 16:55 UTC3h 5m
2026-07-24 SWA3664 DAL → LGA Jul 24, 13:45 UTCJul 24, 16:52 UTC3h 7m
2026-07-24 SWA3664 - Jul 24, 11:40 UTCJul 24, 12:45 UTC1h 5m
2026-07-24 SWA4424 MDW → ALB Jul 24, 00:20 UTCJul 24, 01:25 UTC1h 5m
2026-07-23 SWA2110 DAL → LAX Jul 23, 21:20 UTCJul 23, 23:20 UTC2h 0m
2026-07-23 SWA1553 BNA → BOS Jul 23, 18:00 UTCJul 23, 19:55 UTC1h 55m
2026-07-23 SWA1553 BNA → BOS Jul 23, 17:57 UTCJul 23, 19:54 UTC1h 57m
2026-07-23 SWA690 LAS → HOU Jul 23, 15:40 UTCJul 23, 16:55 UTC1h 15m
2026-07-23 SWA690 LAS → HOU Jul 23, 13:25 UTCJul 23, 14:40 UTC1h 15m
2026-07-23 SWA3592 CMH → SRQ Jul 23, 10:55 UTCJul 23, 12:00 UTC1h 5m
2026-07-22 SWA4716 LAS → FAT Jul 22, 23:55 UTCJul 23, 00:55 UTC1h 0m
2026-07-22 SWA2373 LAS → HNL Jul 22, 20:30 UTCJul 22, 22:40 UTC2h 10m
2026-07-22 SWA2373 LAS → HNL Jul 22, 20:26 UTCJul 22, 22:34 UTC2h 8m
2026-07-22 SWA1218 ORD → AUS Jul 22, 17:00 UTCJul 22, 18:40 UTC1h 40m
2026-07-22 SWA1218 ORD → AUS Jul 22, 16:53 UTCJul 22, 18:37 UTC1h 44m
2026-07-22 SWA1218 ORD → AUS Jul 22, 15:10 UTCJul 22, 15:50 UTC40m
2026-07-22 SWA1218 ORD → AUS Jul 22, 12:45 UTCJul 22, 14:10 UTC1h 25m
2026-07-22 SWA3335 LAS → SDF Jul 22, 03:30 UTCJul 22, 04:50 UTC1h 20m
2026-07-22 SWA3702 OAK → HOU Jul 22, 01:35 UTCJul 22, 02:25 UTC50m
2026-07-21 SWA3702 OAK → HOU Jul 21, 23:30 UTCJul 22, 00:35 UTC1h 5m
2026-07-21 SWA1570 IAH → LAS Jul 21, 21:25 UTCJul 21, 22:10 UTC45m
2026-07-21 SWA4978 MKE → PHX Jul 21, 19:25 UTCJul 21, 20:00 UTC35m
2026-07-21 SWA4978 MKE → PHX Jul 21, 19:20 UTCJul 21, 20:18 UTC58m
2026-07-21 SWA2753 SBA → OAK Jul 21, 17:30 UTCJul 21, 18:20 UTC50m
2026-07-21 SWA2753 SBA → OAK Jul 21, 17:29 UTCJul 21, 18:14 UTC45m
2026-07-21 SWA3601 PHX → ORD Jul 21, 15:40 UTCJul 21, 16:30 UTC50m
2026-07-21 SWA3601 PHX → ORD Jul 21, 15:45 UTCJul 21, 16:35 UTC50m
2026-07-21 SWA3165 STL → LGA Jul 21, 13:35 UTCJul 21, 14:35 UTC1h 0m
2026-07-21 SWA4984 MKE → MCI Jul 21, 04:05 UTCJul 21, 05:05 UTC1h 0m
2026-07-21 SWA3872 - Jul 21, 02:05 UTCJul 21, 03:10 UTC1h 5m
2026-07-21 SWA4510 PHX → OGG Jul 21, 00:30 UTCJul 21, 01:20 UTC50m
2026-07-20 SWA3525 MDW → ORF Jul 20, 22:30 UTCJul 20, 23:20 UTC50m

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?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
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.