Apparatus

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sensors Mode-S transponder

A1AA4E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N206WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1AA4E
Octal
50325116
Decimal
10,594,894
Country
US
Tail
N206WN
Type
B737
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
783
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A1AA4E.

Country allocation

The ICAO 24-bit address A1AA4E 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
SWA617 Southwest Airlines 6 2026-06-02
SWA416 Southwest Airlines 6 2026-04-16
SWA3563 Southwest Airlines 6 2026-07-20
SWA300 - 6 2026-06-20
SWA878 Southwest Airlines 5 2026-07-20
SWA714 Southwest Airlines 5 2026-07-26
SWA3144 - 5 2026-04-13
SWA1790 - 5 2026-07-21
SWA1683 Southwest Airlines 5 2026-04-14
SWA1577 - 5 2026-07-07
SWA1450 - 5 2026-07-15
SWA931 - 4 2026-07-02
SWA915 - 4 2026-07-01
SWA882 Southwest Airlines 4 2026-07-19
SWA611 Southwest Airlines 4 2026-04-20
SWA478 Southwest Airlines 4 2026-06-06
SWA4355 - 4 2026-06-25
SWA401 - 4 2026-06-26
SWA2665 Southwest Airlines 4 2026-05-08
SWA2503 Southwest Airlines 4 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2620 BWI → FLL Jul 26, 20:30 UTCJul 26, 21:30 UTC1h 0m
2026-07-26 SWA2024 SFO → BUR Jul 26, 16:35 UTCJul 26, 19:15 UTC2h 40m
2026-07-26 SWA2024 SFO → BUR Jul 26, 14:15 UTCJul 26, 15:35 UTC1h 20m
2026-07-26 SWA1078 ABQ → OAK Jul 26, 11:36 UTCJul 26, 13:06 UTC1h 30m
2026-07-26 SWA1078 ABQ → OAK Jul 26, 11:40 UTCJul 26, 13:10 UTC1h 30m
2026-07-26 SWA714 RDU → MDW Jul 26, 03:35 UTCJul 26, 04:30 UTC55m
2026-07-26 SWA714 RDU → MDW Jul 26, 01:30 UTCJul 26, 02:50 UTC1h 20m
2026-07-25 SWA714 RDU → MDW Jul 25, 23:40 UTCJul 26, 00:30 UTC50m
2026-07-25 SWA714 RDU → MDW Jul 25, 21:25 UTCJul 25, 22:30 UTC1h 5m
2026-07-25 SWA714 RDU → MDW Jul 25, 19:00 UTCJul 25, 20:30 UTC1h 30m
2026-07-25 SWA418 SJC → LAS Jul 25, 17:10 UTCJul 25, 18:10 UTC1h 0m
2026-07-25 SWA418 SJC → LAS Jul 25, 17:09 UTCJul 25, 18:08 UTC59m
2026-07-25 SWA418 SJC → LAS Jul 25, 14:55 UTCJul 25, 16:25 UTC1h 30m
2026-07-25 SWA868 PHX → SNA Jul 25, 02:40 UTCJul 25, 05:05 UTC2h 25m
2026-07-24 SWA868 PHX → SNA Jul 24, 19:55 UTCJul 25, 01:25 UTC5h 30m
2026-07-24 SWA868 PHX → SNA Jul 24, 17:35 UTCJul 24, 18:50 UTC1h 15m
2026-07-24 SWA1003 SJC → SNA Jul 24, 15:30 UTCJul 24, 16:30 UTC1h 0m
2026-07-24 SWA1003 SJC → SNA Jul 24, 15:27 UTCJul 24, 16:28 UTC1h 1m
2026-07-24 SWA2458 AUS → DAL Jul 24, 13:30 UTCJul 24, 14:20 UTC50m
2026-07-24 SWA857 LAS → OAK Jul 24, 11:20 UTCJul 24, 12:05 UTC45m
2026-07-24 SWA857 LAS → OAK Jul 24, 11:15 UTCJul 24, 12:06 UTC51m
2026-07-24 SWA2206 MDW → MCO Jul 24, 00:00 UTCJul 24, 04:00 UTC4h 0m
2026-07-23 SWA790 DEN → SJC Jul 23, 21:25 UTCJul 23, 22:10 UTC45m
2026-07-23 SWA3661 SAN → SJC Jul 23, 19:20 UTCJul 23, 20:10 UTC50m
2026-07-23 SWA439 TPA → MSY Jul 23, 17:30 UTCJul 23, 18:30 UTC1h 0m
2026-07-23 SWA439 TPA → MSY Jul 23, 17:25 UTCJul 23, 18:25 UTC1h 0m
2026-07-23 SWA439 TPA → MSY Jul 23, 13:00 UTCJul 23, 16:20 UTC3h 20m
2026-07-23 SWA8500 BWI → BOS Jul 23, 10:45 UTCJul 23, 12:05 UTC1h 20m
2026-07-23 SWA8500 BWI → BOS Jul 23, 10:41 UTCJul 23, 12:02 UTC1h 21m
2026-07-23 SWA1222 BUR → OAK Jul 23, 01:50 UTCJul 23, 03:40 UTC1h 50m
2026-07-22 SWA1983 SJC → SLC Jul 22, 21:45 UTCJul 22, 22:10 UTC25m
2026-07-22 SWA1563 BNA → LGA Jul 22, 19:25 UTCJul 22, 20:45 UTC1h 20m
2026-07-22 SWA1563 BNA → LGA Jul 22, 17:20 UTCJul 22, 18:25 UTC1h 5m
2026-07-22 SWA537 AUS → MSY Jul 22, 15:45 UTCJul 22, 16:25 UTC40m
2026-07-22 SWA4598 DEN → SJC Jul 22, 12:55 UTCJul 22, 14:10 UTC1h 15m
2026-07-22 SWA3406 SMF → BUR Jul 22, 02:20 UTCJul 22, 03:10 UTC50m
2026-07-22 SWA2614 SJC → BUR Jul 22, 00:25 UTCJul 22, 01:30 UTC1h 5m
2026-07-21 SWA1790 SAN → CMH Jul 21, 19:26 UTCJul 21, 23:32 UTC4h 6m
2026-07-21 SWA1790 - Jul 21, 19:30 UTCJul 21, 23:35 UTC4h 5m
2026-07-21 SWA1790 SMF → SAN Jul 21, 16:55 UTCJul 21, 18:10 UTC1h 15m
2026-07-21 SWA2503 SNA → SJC Jul 21, 14:30 UTCJul 21, 15:30 UTC1h 0m
2026-07-21 SWA2503 SNA → SJC Jul 21, 14:26 UTCJul 21, 15:25 UTC59m
2026-07-21 SWA4907 SAT → MSY Jul 21, 02:55 UTCJul 21, 03:50 UTC55m
2026-07-21 SWA840 MCO → MSY Jul 21, 01:00 UTCJul 21, 01:40 UTC40m
2026-07-21 SWA840 MCO → MSY Jul 21, 00:55 UTCJul 21, 01:37 UTC42m
2026-07-20 SWA3563 LGA → MDW Jul 20, 22:50 UTCJul 20, 23:45 UTC55m
2026-07-20 SWA3563 LGA → MDW Jul 20, 22:49 UTCJul 20, 23:41 UTC52m
2026-07-20 SWA3563 LGA → MDW Jul 20, 19:55 UTCJul 20, 21:50 UTC1h 55m
2026-07-20 SWA3563 LGA → MDW Jul 20, 17:10 UTCJul 20, 18:45 UTC1h 35m
2026-07-20 SWA3563 LGA → MDW Jul 20, 14:55 UTCJul 20, 15:45 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 N206WN page for operator, model, and routing details .

Mode-S A1AA4E frequently asked

What is Mode-S code A1AA4E?
A1AA4E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N206WN.
Where is Mode-S A1AA4E registered?
Mode-S code A1AA4E 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 A1AA4E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1AA4E, octal 50325116, decimal 10,594,894.
What flights does A1AA4E operate?
Mode-S A1AA4E has broadcast 20 distinct callsigns, including SWA617, SWA416, SWA3563, SWA300, SWA878.