Apparatus

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sensors Mode-S transponder

A5E0D3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N478WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A5E0D3
Octal
51360323
Decimal
10,870,995
Country
US
Tail
N478WN
Type
B737
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
590
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S A5E0D3.

Country allocation

The ICAO 24-bit address A5E0D3 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
SWA3199 Southwest Airlines 6 2026-04-17
SWA1070 - 6 2026-07-18
SWA550 - 5 2026-07-19
SWA3144 Southwest Airlines 5 2026-05-15
SWA3102 Southwest Airlines 5 2026-04-30
SWA2977 - 5 2026-07-21
SWA2737 Southwest Airlines 5 2026-05-02
SWA984 Southwest Airlines 4 2026-05-21
SWA2436 Southwest Airlines 4 2026-05-21
SWA2168 Southwest Airlines 4 2026-04-20
SWA1624 - 4 2026-07-14
SWA1519 Southwest Airlines 4 2026-07-11
SWA1306 Southwest Airlines 4 2026-04-16
SWA1206 - 4 2026-06-28
SWA835 - 3 2026-07-10
SWA699 - 3 2026-07-08
SWA4141 - 3 2026-06-17
SWA411 Southwest Airlines 3 2026-07-24
SWA352 Southwest Airlines 3 2026-06-20
SWA3477 Southwest Airlines 3 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3739 BWI → CVG Jul 26, 20:45 UTCJul 26, 21:35 UTC50m
2026-07-26 SWA3289 BWI → SAT Jul 26, 19:00 UTCJul 26, 19:35 UTC35m
2026-07-26 SWA3289 BWI → SAT Jul 26, 18:55 UTCJul 26, 19:33 UTC38m
2026-07-26 SWA2751 HOU → MDW Jul 26, 15:00 UTCJul 26, 17:20 UTC2h 20m
2026-07-26 SWA1357 OAK → LAX Jul 26, 12:05 UTCJul 26, 14:10 UTC2h 5m
2026-07-26 SWA1231 SFO → BUR Jul 26, 01:25 UTCJul 26, 02:55 UTC1h 30m
2026-07-26 SWA1231 SFO → BUR Jul 26, 01:22 UTCJul 26, 02:53 UTC1h 32m
2026-07-25 SWA1231 SFO → BUR Jul 25, 22:30 UTCJul 26, 00:15 UTC1h 45m
2026-07-25 SWA3811 MSP → STL Jul 25, 19:10 UTCJul 25, 21:20 UTC2h 10m
2026-07-25 SWA3811 MSP → STL Jul 25, 19:05 UTCJul 25, 21:11 UTC2h 6m
2026-07-25 SWA799 MDW → BOS Jul 25, 16:15 UTCJul 25, 17:55 UTC1h 40m
2026-07-25 SWA799 MDW → BOS Jul 25, 16:10 UTCJul 25, 18:10 UTC2h 0m
2026-07-25 SWA1584 BOI → OAK Jul 25, 13:55 UTCJul 25, 15:00 UTC1h 5m
2026-07-25 SWA1676 AUS → MCO Jul 25, 11:00 UTCJul 25, 12:20 UTC1h 20m
2026-07-25 SWA1764 OMA → MDW Jul 25, 02:50 UTCJul 25, 03:55 UTC1h 5m
2026-07-25 SWA1764 OMA → MDW Jul 25, 02:47 UTCJul 25, 03:57 UTC1h 10m
2026-07-24 SWA1303 BNA → MSP Jul 24, 23:50 UTCJul 25, 01:25 UTC1h 35m
2026-07-24 SWA1303 BNA → MSP Jul 24, 23:47 UTCJul 25, 01:20 UTC1h 34m
2026-07-24 SWA1303 BNA → MSP Jul 24, 22:10 UTCJul 24, 22:50 UTC40m
2026-07-24 SWA4400 SAT → ELP Jul 24, 20:10 UTCJul 24, 21:15 UTC1h 5m
2026-07-24 SWA4468 AUS → PHX Jul 24, 17:00 UTCJul 24, 18:45 UTC1h 45m
2026-07-24 SWA4468 AUS → PHX Jul 24, 16:59 UTCJul 24, 18:41 UTC1h 42m
2026-07-24 SWA411 BNA → MDW Jul 24, 13:50 UTCJul 24, 16:00 UTC2h 10m
2026-07-24 SWA411 BNA → MDW Jul 24, 13:49 UTCJul 24, 15:52 UTC2h 3m
2026-07-24 SWA411 BNA → MDW Jul 24, 11:05 UTCJul 24, 12:45 UTC1h 40m
2026-07-24 SWA504 STL → SAN Jul 24, 01:00 UTCJul 24, 02:45 UTC1h 45m
2026-07-24 SWA504 STL → SAN Jul 24, 00:59 UTCJul 24, 04:23 UTC3h 24m
2026-07-23 SWA694 HOU → MSY Jul 23, 22:50 UTCJul 23, 23:35 UTC45m
2026-07-23 SWA1417 ABQ → OAK Jul 23, 18:35 UTCJul 23, 22:00 UTC3h 25m
2026-07-23 SWA827 DEN → PHL Jul 23, 16:20 UTCJul 23, 17:15 UTC55m
2026-07-23 SWA2196 MDW → MEM Jul 23, 13:45 UTCJul 23, 14:30 UTC45m
2026-07-23 SWA2439 LAS → SJC Jul 23, 04:45 UTCJul 23, 05:30 UTC45m
2026-07-23 SWA2102 MSY → MCO Jul 23, 02:50 UTCJul 23, 03:45 UTC55m
2026-07-22 SWA1006 MSY → BWI Jul 22, 23:00 UTCJul 23, 01:20 UTC2h 20m
2026-07-22 SWA1006 MSY → BWI Jul 22, 20:25 UTCJul 22, 21:55 UTC1h 30m
2026-07-22 SWA4154 SJC → ONT Jul 22, 17:10 UTCJul 22, 18:40 UTC1h 30m
2026-07-22 SWA4154 SJC → ONT Jul 22, 14:25 UTCJul 22, 15:45 UTC1h 20m
2026-07-22 SWA3054 PHL → ATL Jul 22, 11:10 UTCJul 22, 12:05 UTC55m
2026-07-22 SWA1374 DEN → AUS Jul 22, 00:00 UTCJul 22, 01:45 UTC1h 45m
2026-07-21 SWA2717 DAL → SAN Jul 21, 20:30 UTCJul 21, 21:55 UTC1h 25m
2026-07-21 SWA2717 DAL → SAN Jul 21, 18:35 UTCJul 21, 19:40 UTC1h 5m
2026-07-21 SWA2977 - Jul 21, 15:50 UTCJul 21, 16:55 UTC1h 5m
2026-07-21 SWA2977 - Jul 21, 12:35 UTCJul 21, 14:45 UTC2h 10m
2026-07-21 SWA3422 BUR → OAK Jul 21, 10:05 UTCJul 21, 11:05 UTC1h 0m
2026-07-21 SWA4431 - Jul 21, 02:30 UTCJul 21, 03:45 UTC1h 15m
2026-07-21 SWA482 BWI → ALB Jul 21, 00:50 UTCJul 21, 01:35 UTC45m
2026-07-20 SWA1094 SAV → STL Jul 20, 22:25 UTCJul 21, 00:10 UTC1h 45m
2026-07-20 SWA1094 - Jul 20, 20:05 UTCJul 20, 21:20 UTC1h 15m
2026-07-20 SWA1534 LAX → MDW Jul 20, 16:20 UTCJul 20, 18:30 UTC2h 10m
2026-07-20 SWA4653 - Jul 20, 13:00 UTCJul 20, 15:20 UTC2h 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 N478WN page for operator, model, and routing details .

Mode-S A5E0D3 frequently asked

What is Mode-S code A5E0D3?
A5E0D3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N478WN.
Where is Mode-S A5E0D3 registered?
Mode-S code A5E0D3 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 A5E0D3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5E0D3, octal 51360323, decimal 10,870,995.
What flights does A5E0D3 operate?
Mode-S A5E0D3 has broadcast 20 distinct callsigns, including SWA3199, SWA1070, SWA550, SWA3144, SWA3102.