Apparatus

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sensors Mode-S transponder

A5FD2D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N485WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A5FD2D
Octal
51376455
Decimal
10,878,253
Country
US
Tail
N485WN
Type
B737
No current signal · last broadcast 20d ago
Flights observed
521
Distinct callsigns
20
Country
US
Last broadcast
20d ago

Last known position

Most recent position reported by Mode-S A5FD2D.

Country allocation

The ICAO 24-bit address A5FD2D 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
SWA2970 Southwest Airlines 6 2026-05-03
SWA263 Southwest Airlines 6 2026-06-01
SWA598 Southwest Airlines 5 2026-05-08
SWA576 Southwest Airlines 5 2026-06-03
SWA2087 Southwest Airlines 5 2026-05-06
SWA1853 Southwest Airlines 5 2026-05-16
SWA1383 Southwest Airlines 5 2026-05-08
SWA726 Southwest Airlines 4 2026-06-22
SWA630 Southwest Airlines 4 2026-05-12
SWA3707 Southwest Airlines 4 2026-06-04
SWA2973 Southwest Airlines 4 2026-06-03
SWA2749 Southwest Airlines 4 2026-05-07
SWA2131 Southwest Airlines 4 2026-04-17
SWA2034 Southwest Airlines 4 2026-06-12
SWA1321 Southwest Airlines 4 2026-06-10
SWA951 Southwest Airlines 3 2026-05-15
SWA760 - 3 2026-06-19
SWA715 Southwest Airlines 3 2026-04-25
SWA623 Southwest Airlines 3 2026-05-29
SWA577 Southwest Airlines 3 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 SWA8537 DCA → BWI Jun 23, 15:05 UTCJun 23, 17:48 UTC2h 43m
2026-06-23 SWA54 - Jun 23, 00:15 UTCJun 23, 00:45 UTC30m
2026-06-22 SWA726 BWI → BOS Jun 22, 22:54 UTCJun 22, 23:24 UTC30m
2026-06-22 SWA726 BWI → BOS Jun 22, 22:50 UTCJun 22, 23:23 UTC33m
2026-06-22 SWA3606 - Jun 22, 19:24 UTCJun 22, 21:35 UTC2h 10m
2026-06-22 SWA3606 SDF → HOU Jun 22, 19:19 UTCJun 22, 21:36 UTC2h 17m
2026-06-22 SWA2077 SJU → BWI Jun 22, 16:29 UTCJun 22, 18:15 UTC1h 45m
2026-06-22 SWA2077 SJU → BWI Jun 22, 16:25 UTCJun 22, 18:12 UTC1h 47m
2026-06-22 SWA4675 - Jun 22, 04:04 UTCJun 22, 06:39 UTC2h 35m
2026-06-22 SWA4675 SAN → HOU Jun 22, 04:01 UTCJun 22, 06:40 UTC2h 39m
2026-06-22 SWA3324 MDW → SJC Jun 22, 02:10 UTCJun 22, 02:59 UTC50m
2026-06-21 SWA3266 SJC → PHX Jun 21, 23:14 UTCJun 22, 00:40 UTC1h 25m
2026-06-21 SWA4102 PHX → SJC Jun 21, 20:34 UTCJun 21, 22:04 UTC1h 30m
2026-06-21 SWA4102 PHX → SJC Jun 21, 20:31 UTCJun 21, 22:00 UTC1h 29m
2026-06-21 SWA4805 MCO → BDL Jun 21, 18:10 UTCJun 21, 19:29 UTC1h 20m
2026-06-21 SWA4805 MCO → BDL Jun 21, 18:06 UTCJun 21, 19:26 UTC1h 20m
2026-06-21 SWA2296 SJC → DEN Jun 21, 15:49 UTCJun 21, 16:54 UTC1h 5m
2026-06-21 SWA4176 SJC → SAN Jun 21, 13:11 UTCJun 21, 14:15 UTC1h 4m
2026-06-21 SWA4176 SJC → SAN Jun 21, 13:15 UTCJun 21, 14:19 UTC1h 5m
2026-06-21 SWA1843 PHX → BWI Jun 21, 03:31 UTCJun 21, 05:54 UTC2h 23m
2026-06-21 SWA1843 PHX → BWI Jun 21, 03:34 UTCJun 21, 05:59 UTC2h 25m
2026-06-20 SWA2557 - Jun 20, 22:35 UTCJun 21, 02:20 UTC3h 45m
2026-06-20 SWA9004 - Jun 20, 19:44 UTCJun 20, 21:05 UTC1h 20m
2026-06-20 SWA103 ATL → MDW Jun 20, 17:10 UTCJun 20, 18:34 UTC1h 25m
2026-06-20 SWA103 - Jun 20, 15:14 UTCJun 20, 16:09 UTC55m
2026-06-20 SWA103 - Jun 20, 13:19 UTCJun 20, 13:59 UTC40m
2026-06-20 SWA2927 - Jun 20, 09:54 UTCJun 20, 11:49 UTC1h 55m
2026-06-20 SWA2927 MIA → HOU Jun 20, 09:52 UTCJun 20, 11:56 UTC2h 5m
2026-06-20 SWA1516 MCO → MIA Jun 20, 01:50 UTCJun 20, 02:44 UTC55m
2026-06-20 SWA1516 MCO → MIA Jun 20, 01:45 UTCJun 20, 02:28 UTC44m
2026-06-19 SWA760 - Jun 19, 21:49 UTCJun 20, 00:19 UTC2h 30m
2026-06-19 SWA760 CVG → MCO Jun 19, 21:48 UTCJun 20, 00:18 UTC2h 30m
2026-06-19 SWA760 - Jun 19, 19:34 UTCJun 19, 20:44 UTC1h 10m
2026-06-19 SWA1534 - Jun 19, 16:19 UTCJun 19, 18:09 UTC1h 50m
2026-06-19 SWA1534 SRQ → BWI Jun 19, 16:16 UTCJun 19, 18:11 UTC1h 56m
2026-06-19 SWA4653 AUS → MCI Jun 19, 12:59 UTCJun 19, 15:14 UTC2h 15m
2026-06-19 SWA4653 AUS → MCI Jun 19, 12:55 UTCJun 19, 15:21 UTC2h 26m
2026-06-19 SWA2413 - Jun 19, 07:14 UTCJun 19, 10:35 UTC3h 20m
2026-06-19 SWA2413 LAX → MDW Jun 19, 07:10 UTCJun 19, 10:31 UTC3h 22m
2026-06-19 SWA2256 BNA → LGA Jun 19, 04:34 UTCJun 19, 05:14 UTC40m
2026-06-19 SWA2256 BNA → LGA Jun 19, 01:54 UTCJun 19, 03:39 UTC1h 45m
2026-06-18 SWA4908 MCO → PHX Jun 18, 22:35 UTCJun 19, 00:34 UTC1h 59m
2026-06-18 SWA1232 COS → SAN Jun 18, 19:25 UTCJun 18, 21:20 UTC1h 55m
2026-06-18 SWA4326 - Jun 18, 16:10 UTCJun 18, 17:40 UTC1h 30m
2026-06-18 SWA4326 TPA → LAS Jun 18, 10:50 UTCJun 18, 15:05 UTC4h 15m
2026-06-18 SWA472 BUR → SJC Jun 18, 01:25 UTCJun 18, 03:20 UTC1h 55m
2026-06-17 SWA472 BUR → SJC Jun 17, 21:40 UTCJun 18, 00:25 UTC2h 45m
2026-06-17 SWA4346 MSP → DEN Jun 17, 18:15 UTCJun 17, 20:10 UTC1h 55m
2026-06-17 SWA4346 MSP → DEN Jun 17, 18:15 UTCJun 17, 20:06 UTC1h 51m
2026-06-17 SWA353 STL → MSP Jun 17, 14:10 UTCJun 17, 15:25 UTC1h 15m

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 N485WN page for operator, model, and routing details .

Mode-S A5FD2D frequently asked

What is Mode-S code A5FD2D?
A5FD2D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N485WN.
Where is Mode-S A5FD2D registered?
Mode-S code A5FD2D 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 A5FD2D 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 A5FD2D, octal 51376455, decimal 10,878,253.
What flights does A5FD2D operate?
Mode-S A5FD2D has broadcast 20 distinct callsigns, including SWA2970, SWA263, SWA598, SWA576, SWA2087.