Apparatus

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sensors Mode-S transponder

A284B5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N261WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A284B5
Octal
50502265
Decimal
10,650,805
Country
US
Tail
N261WN
Type
B737
No current signal · last broadcast 20d ago
Flights observed
557
Distinct callsigns
20
Country
US
Last broadcast
20d ago

Last known position

Most recent position reported by Mode-S A284B5.

Country allocation

The ICAO 24-bit address A284B5 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
SWA3731 Southwest Airlines 7 2026-05-19
SWA3888 Southwest Airlines 6 2026-06-08
SWA371 Southwest Airlines 5 2026-06-14
SWA3590 - 5 2026-04-13
SWA342 Southwest Airlines 5 2026-06-13
SWA295 - 5 2026-04-15
SWA2715 Southwest Airlines 5 2026-05-15
SWA2374 Southwest Airlines 5 2026-06-03
SWA2099 Southwest Airlines 5 2026-04-22
SWA1354 Southwest Airlines 5 2026-06-21
SWA123 Southwest Airlines 5 2026-05-31
SWA722 Southwest Airlines 4 2026-04-24
SWA4626 - 4 2026-06-23
SWA3899 Southwest Airlines 4 2026-04-20
SWA3563 - 4 2026-06-15
SWA3546 Southwest Airlines 4 2026-04-17
SWA3023 Southwest Airlines 4 2026-06-20
SWA3018 Southwest Airlines 4 2026-05-11
SWA3007 Southwest Airlines 4 2026-04-24
SWA2855 Southwest Airlines 4 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-24 SWA8501 - Jun 24, 13:05 UTCJun 24, 13:24 UTC20m
2026-06-23 SWA4626 - Jun 23, 23:10 UTCJun 24, 00:30 UTC1h 20m
2026-06-23 SWA2877 - Jun 23, 20:44 UTCJun 23, 21:49 UTC1h 5m
2026-06-23 SWA2877 - Jun 23, 18:39 UTCJun 23, 19:50 UTC1h 10m
2026-06-23 SWA3826 GEG → MDW Jun 23, 13:39 UTCJun 23, 16:29 UTC2h 50m
2026-06-23 SWA3826 GEG → MDW Jun 23, 13:35 UTCJun 23, 16:25 UTC2h 50m
2026-06-23 SWA1538 - Jun 23, 04:29 UTCJun 23, 06:29 UTC2h 0m
2026-06-23 SWA1538 DEN → GEG Jun 23, 04:25 UTCJun 23, 06:30 UTC2h 5m
2026-06-23 SWA4639 - Jun 23, 01:00 UTCJun 23, 03:04 UTC2h 5m
2026-06-22 SWA881 - Jun 22, 21:19 UTCJun 22, 22:30 UTC1h 10m
2026-06-22 SWA3006 - Jun 22, 16:40 UTCJun 22, 17:44 UTC1h 5m
2026-06-22 SWA3006 HOU → SJD Jun 22, 16:34 UTCJun 22, 18:42 UTC2h 8m
2026-06-22 SWA934 - Jun 22, 14:19 UTCJun 22, 15:10 UTC50m
2026-06-22 SWA934 TPA → MSY Jun 22, 12:05 UTCJun 22, 13:14 UTC1h 10m
2026-06-22 SWA1453 MSY → TPA Jun 22, 02:34 UTCJun 22, 03:50 UTC1h 15m
2026-06-21 SWA1453 DCA → MSY Jun 21, 23:24 UTCJun 22, 01:35 UTC2h 10m
2026-06-21 SWA686 ATL → DCA Jun 21, 20:40 UTCJun 21, 22:04 UTC1h 25m
2026-06-21 SWA686 ATL → DCA Jun 21, 20:40 UTCJun 21, 21:57 UTC1h 17m
2026-06-21 SWA893 - Jun 21, 18:39 UTCJun 21, 19:20 UTC40m
2026-06-21 SWA1354 CVG → MCO Jun 21, 16:19 UTCJun 21, 17:24 UTC1h 5m
2026-06-21 SWA1354 CVG → MCO Jun 21, 13:59 UTCJun 21, 15:25 UTC1h 25m
2026-06-21 SWA1354 CVG → MCO Jun 21, 11:30 UTCJun 21, 12:44 UTC1h 15m
2026-06-21 SWA3373 - Jun 21, 03:44 UTCJun 21, 05:04 UTC1h 20m
2026-06-21 SWA1429 BHM → MDW Jun 21, 01:05 UTCJun 21, 02:24 UTC1h 20m
2026-06-20 SWA102 - Jun 20, 22:14 UTCJun 20, 23:14 UTC1h 0m
2026-06-20 SWA102 HOU → ABQ Jun 20, 22:08 UTCJun 20, 23:59 UTC1h 51m
2026-06-20 SWA2069 - Jun 20, 19:34 UTCJun 20, 20:49 UTC1h 15m
2026-06-20 SWA888 - Jun 20, 16:09 UTCJun 20, 17:10 UTC1h 0m
2026-06-20 SWA888 - Jun 20, 14:19 UTCJun 20, 14:59 UTC40m
2026-06-20 SWA888 - Jun 20, 11:20 UTCJun 20, 13:24 UTC2h 5m
2026-06-20 SWA3023 BNA → MDW Jun 20, 04:20 UTCJun 20, 06:10 UTC1h 50m
2026-06-20 SWA3023 BNA → MDW Jun 20, 04:16 UTCJun 20, 06:05 UTC1h 49m
2026-06-20 SWA3023 BNA → MDW Jun 20, 02:40 UTCJun 20, 03:24 UTC45m
2026-06-20 SWA3023 BNA → MDW Jun 20, 02:14 UTCJun 20, 02:35 UTC20m
2026-06-19 SWA2670 OAK → MDW Jun 19, 22:55 UTCJun 20, 00:14 UTC1h 20m
2026-06-19 SWA2670 OAK → MDW Jun 19, 22:51 UTCJun 20, 00:11 UTC1h 20m
2026-06-19 SWA1031 SFB → MCO Jun 19, 19:59 UTCJun 19, 20:24 UTC25m
2026-06-19 SWA1031 - Jun 19, 17:49 UTCJun 19, 20:24 UTC2h 35m
2026-06-19 SWA1031 CLE → MCO Jun 19, 17:45 UTCJun 19, 19:40 UTC1h 55m
2026-06-19 SWA1031 - Jun 19, 16:04 UTCJun 19, 16:55 UTC50m
2026-06-19 SWA732 BOS → BWI Jun 19, 13:54 UTCJun 19, 15:04 UTC1h 10m
2026-06-19 SWA732 BOS → BWI Jun 19, 13:55 UTCJun 19, 15:02 UTC1h 7m
2026-06-19 SWA883 - Jun 19, 11:24 UTCJun 19, 12:25 UTC1h 0m
2026-06-19 SWA736 BOS → BWI Jun 19, 03:29 UTCJun 19, 04:34 UTC1h 5m
2026-06-19 SWA4361 - Jun 19, 01:39 UTCJun 19, 02:35 UTC55m
2026-06-19 SWA4361 BWI → BOS Jun 19, 01:35 UTCJun 19, 02:35 UTC1h 0m
2026-06-18 SWA1665 BUR → OAK Jun 18, 22:50 UTCJun 18, 23:30 UTC40m
2026-06-18 SWA1665 BUR → OAK Jun 18, 22:48 UTCJun 18, 23:29 UTC42m
2026-06-18 SWA1665 BUR → OAK Jun 18, 19:00 UTCJun 18, 21:55 UTC2h 55m
2026-06-18 SWA690 - Jun 18, 16:15 UTCJun 18, 17:35 UTC1h 20m

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 N261WN page for operator, model, and routing details .

Mode-S A284B5 frequently asked

What is Mode-S code A284B5?
A284B5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N261WN.
Where is Mode-S A284B5 registered?
Mode-S code A284B5 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 A284B5 broadcasting right now?
No active broadcast right now. Last signal was 20d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A284B5, octal 50502265, decimal 10,650,805.
What flights does A284B5 operate?
Mode-S A284B5 has broadcast 20 distinct callsigns, including SWA3731, SWA3888, SWA371, SWA3590, SWA342.