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 Jul 26, 21:15 UTC
Flights observed
557
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

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
SWA2941 Southwest Airlines 4 2026-07-23
SWA2749 Southwest Airlines 4 2026-05-07
SWA2590 - 4 2026-07-26
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4532 TPA → SAT Jul 26, 20:20 UTCJul 26, 21:15 UTC55m
2026-07-26 SWA3129 ALB → BWI Jul 26, 18:35 UTCJul 26, 19:20 UTC45m
2026-07-26 SWA2590 - Jul 26, 16:50 UTCJul 26, 17:15 UTC25m
2026-07-26 SWA2590 SJC → BUR Jul 26, 16:47 UTCJul 26, 17:36 UTC49m
2026-07-26 SWA3983 DEN → BNA Jul 26, 14:05 UTCJul 26, 15:50 UTC1h 45m
2026-07-26 SWA4985 MCO → MDW Jul 26, 04:40 UTCJul 26, 06:00 UTC1h 20m
2026-07-26 SWA4985 MCO → MDW Jul 26, 04:39 UTCJul 26, 05:57 UTC1h 18m
2026-07-26 SWA1748 OAK → DAL Jul 26, 02:25 UTCJul 26, 03:30 UTC1h 5m
2026-07-25 SWA1748 OAK → DAL Jul 25, 23:50 UTCJul 26, 01:40 UTC1h 50m
2026-07-25 SWA1748 OAK → DAL Jul 25, 21:15 UTCJul 25, 22:35 UTC1h 20m
2026-07-25 SWA3798 OAK → LAS Jul 25, 17:10 UTCJul 25, 19:55 UTC2h 45m
2026-07-25 SWA3798 OAK → LAS Jul 25, 17:08 UTCJul 25, 19:55 UTC2h 47m
2026-07-25 SWA1738 LGB → SJC Jul 25, 14:10 UTCJul 25, 16:10 UTC2h 0m
2026-07-25 SWA4071 LAS → SAT Jul 25, 11:00 UTCJul 25, 12:35 UTC1h 35m
2026-07-25 SWA4085 LAS → OAK Jul 25, 03:20 UTCJul 25, 04:25 UTC1h 5m
2026-07-25 SWA4085 LAS → OAK Jul 25, 03:19 UTCJul 25, 04:14 UTC55m
2026-07-24 SWA4085 LAS → OAK Jul 24, 23:25 UTCJul 25, 02:25 UTC3h 0m
2026-07-24 SWA1230 STL → ATL Jul 24, 21:07 UTCJul 24, 22:27 UTC1h 20m
2026-07-24 SWA1230 STL → ATL Jul 24, 18:00 UTCJul 24, 20:05 UTC2h 5m
2026-07-24 SWA1448 LAS → SJC Jul 24, 01:40 UTCJul 24, 03:10 UTC1h 30m
2026-07-24 SWA1448 LAS → SJC Jul 24, 01:36 UTCJul 24, 03:08 UTC1h 33m
2026-07-23 SWA2941 DEN → OAK Jul 23, 23:10 UTCJul 24, 00:30 UTC1h 20m
2026-07-23 SWA2941 DEN → OAK Jul 23, 23:07 UTCJul 24, 00:29 UTC1h 23m
2026-07-23 SWA363 BNA → LGA Jul 23, 21:35 UTCJul 23, 22:15 UTC40m
2026-07-23 SWA363 BNA → LGA Jul 23, 20:35 UTCJul 23, 21:30 UTC55m
2026-07-23 SWA3010 OAK → DAL Jul 23, 16:50 UTCJul 23, 19:20 UTC2h 30m
2026-07-23 SWA3010 OAK → DAL Jul 23, 14:30 UTCJul 23, 15:45 UTC1h 15m
2026-07-23 SWA1676 - Jul 23, 11:15 UTCJul 23, 12:35 UTC1h 20m
2026-07-23 SWA290 ONT → AUS Jul 23, 01:50 UTCJul 23, 02:45 UTC55m
2026-07-22 SWA4236 MCO → AUS Jul 22, 19:45 UTCJul 22, 21:55 UTC2h 10m
2026-07-22 SWA215 ATL → MCO Jul 22, 17:35 UTCJul 22, 18:35 UTC1h 0m
2026-07-22 SWA215 - Jul 22, 15:05 UTCJul 22, 16:30 UTC1h 25m
2026-07-22 SWA3797 - Jul 22, 11:10 UTCJul 22, 13:15 UTC2h 5m
2026-07-22 SWA3797 HOU → BWI Jul 22, 10:38 UTCJul 22, 13:10 UTC2h 32m
2026-07-21 SWA8546 SJC → OAK Jul 21, 19:20 UTCJul 21, 21:55 UTC2h 35m
2026-07-21 SWA8546 SJC → OAK Jul 21, 19:13 UTCJul 21, 21:58 UTC2h 45m
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

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 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 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.