Apparatus

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sensors Mode-S transponder

A1F1DE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N224WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1F1DE
Octal
50370736
Decimal
10,613,214
Country
US
Tail
N224WN
Type
B737
Broadcasting now · callsign SWA1960 · 38,000 ft
Flights observed
738
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Current position

A1F1DE is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1F1DE 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
SWA4004 - 6 2026-07-15
SWA371 - 6 2026-07-18
SWA1758 - 6 2026-04-13
SWA4386 - 5 2026-07-09
SWA3456 Southwest Airlines 5 2026-05-28
SWA336 Southwest Airlines 5 2026-07-21
SWA1278 Southwest Airlines 5 2026-05-28
SWA1269 - 5 2026-07-07
SWA649 Southwest Airlines 4 2026-04-30
SWA461 - 4 2026-06-26
SWA4368 Southwest Airlines 4 2026-07-24
SWA4355 Southwest Airlines 4 2026-06-06
SWA3986 - 4 2026-07-15
SWA3835 Southwest Airlines 4 2026-05-26
SWA295 Southwest Airlines 4 2026-05-26
SWA2901 - 4 2026-07-20
SWA2780 Southwest Airlines 4 2026-06-02
SWA2699 Southwest Airlines 4 2026-05-08
SWA2536 Southwest Airlines 4 2026-05-13
SWA2310 - 4 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2679 LAS → OGG Jul 26, 20:20 UTCJul 26, 21:30 UTC1h 10m
2026-07-26 SWA1642 OAK → BLI Jul 26, 17:30 UTCJul 26, 19:15 UTC1h 45m
2026-07-26 SWA1642 OAK → BLI Jul 26, 17:26 UTCJul 26, 19:12 UTC1h 46m
2026-07-26 SWA1642 OAK → BLI Jul 26, 14:10 UTCJul 26, 16:30 UTC2h 20m
2026-07-26 SWA3127 ATL → BWI Jul 26, 11:25 UTCJul 26, 12:40 UTC1h 15m
2026-07-26 SWA3127 ATL → BWI Jul 26, 11:21 UTCJul 26, 12:32 UTC1h 11m
2026-07-26 SWA819 SJC → SEA Jul 26, 03:15 UTCJul 26, 05:20 UTC2h 5m
2026-07-26 SWA819 SJC → SEA Jul 26, 00:35 UTCJul 26, 01:35 UTC1h 0m
2026-07-25 SWA4115 BWI → IND Jul 25, 19:45 UTCJul 25, 23:10 UTC3h 25m
2026-07-25 SWA2031 MCO → OMA Jul 25, 15:25 UTCJul 25, 18:30 UTC3h 5m
2026-07-25 SWA2031 MCO → OMA Jul 25, 13:25 UTCJul 25, 14:25 UTC1h 0m
2026-07-25 SWA2362 SEA → SJC Jul 25, 04:30 UTCJul 25, 05:35 UTC1h 5m
2026-07-25 SWA3786 PWM → BWI Jul 25, 01:55 UTCJul 25, 02:55 UTC1h 0m
2026-07-25 SWA3786 PWM → BWI Jul 25, 01:55 UTCJul 25, 03:00 UTC1h 5m
2026-07-24 SWA3871 SAN → PDX Jul 24, 23:35 UTCJul 25, 00:35 UTC1h 0m
2026-07-24 SWA3871 SAN → PDX Jul 24, 23:30 UTCJul 25, 00:34 UTC1h 4m
2026-07-24 SWA2738 BWI → SJU Jul 24, 20:30 UTCJul 24, 21:40 UTC1h 10m
2026-07-24 SWA1105 PDX → OAK Jul 24, 17:30 UTCJul 24, 18:35 UTC1h 5m
2026-07-24 SWA3084 OAK → LAS Jul 24, 13:50 UTCJul 24, 14:55 UTC1h 5m
2026-07-24 SWA3205 LGB → AUS Jul 24, 06:35 UTCJul 24, 08:05 UTC1h 30m
2026-07-24 SWA3205 LGB → AUS Jul 24, 06:32 UTCJul 24, 08:02 UTC1h 30m
2026-07-24 SWA4368 SAN → OAK Jul 24, 04:30 UTCJul 24, 05:45 UTC1h 15m
2026-07-24 SWA4368 SAN → OAK Jul 24, 00:30 UTCJul 24, 03:35 UTC3h 5m
2026-07-23 SWA2979 SEA → OAK Jul 23, 22:15 UTCJul 23, 23:15 UTC1h 0m
2026-07-23 SWA2052 PDX → OAK Jul 23, 19:45 UTCJul 23, 20:30 UTC45m
2026-07-23 SWA3395 PHX → SJC Jul 23, 17:35 UTCJul 23, 18:45 UTC1h 10m
2026-07-23 SWA3796 HNL → OAK Jul 23, 15:20 UTCJul 23, 16:40 UTC1h 20m
2026-07-23 SWA1540 DAL → AMA Jul 23, 13:20 UTCJul 23, 14:20 UTC1h 0m
2026-07-23 SWA1540 DAL → AMA Jul 23, 09:25 UTCJul 23, 12:05 UTC2h 40m
2026-07-23 SWA4243 DEN → CMH Jul 23, 01:55 UTCJul 23, 02:35 UTC40m
2026-07-22 SWA1339 HOU → SJC Jul 22, 16:40 UTCJul 22, 19:55 UTC3h 15m
2026-07-22 SWA698 BWI → BDL Jul 22, 13:55 UTCJul 22, 15:25 UTC1h 30m
2026-07-22 SWA2117 OAK → LAX Jul 22, 01:20 UTCJul 22, 02:35 UTC1h 15m
2026-07-21 SWA791 SJC → LAX Jul 21, 23:45 UTCJul 22, 00:20 UTC35m
2026-07-21 SWA3755 - Jul 21, 18:30 UTCJul 21, 22:15 UTC3h 45m
2026-07-21 SWA1373 OAK → LGB Jul 21, 16:35 UTCJul 21, 17:20 UTC45m
2026-07-21 SWA1373 OAK → LGB Jul 21, 13:55 UTCJul 21, 15:35 UTC1h 40m
2026-07-21 SWA2446 STL → SJC Jul 21, 11:25 UTCJul 21, 12:35 UTC1h 10m
2026-07-21 SWA2446 STL → SJC Jul 21, 11:19 UTCJul 21, 12:28 UTC1h 10m
2026-07-21 SWA336 BUR → SJC Jul 21, 02:45 UTCJul 21, 03:35 UTC50m
2026-07-20 SWA336 BUR → SJC Jul 20, 23:10 UTCJul 21, 01:35 UTC2h 24m
2026-07-20 SWA2901 STL → MIA Jul 20, 19:00 UTCJul 20, 21:25 UTC2h 25m
2026-07-20 SWA2901 - Jul 20, 17:10 UTCJul 20, 17:55 UTC45m
2026-07-20 SWA1356 BOS → BWI Jul 20, 13:50 UTCJul 20, 15:40 UTC1h 50m
2026-07-20 SWA4465 LAX → AUS Jul 20, 10:20 UTCJul 20, 12:35 UTC2h 15m
2026-07-20 SWA4211 IND → PHX Jul 20, 00:20 UTCJul 20, 01:20 UTC1h 0m
2026-07-19 SWA556 HOU → SJC Jul 19, 22:00 UTCJul 19, 22:45 UTC45m
2026-07-19 SWA556 HOU → SJC Jul 19, 19:20 UTCJul 19, 21:05 UTC1h 45m
2026-07-19 SWA4058 PHX → DEN Jul 19, 16:45 UTCJul 19, 18:10 UTC1h 25m
2026-07-19 SWA4058 - Jul 19, 13:20 UTCJul 19, 15:30 UTC2h 10m

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 N224WN page for operator, model, and routing details .

Mode-S A1F1DE frequently asked

What is Mode-S code A1F1DE?
A1F1DE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N224WN.
Where is Mode-S A1F1DE registered?
Mode-S code A1F1DE 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 A1F1DE broadcasting right now?
Yes. Mode-S A1F1DE is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1F1DE, octal 50370736, decimal 10,613,214.
What flights does A1F1DE operate?
Mode-S A1F1DE has broadcast 20 distinct callsigns, including SWA4004, SWA371, SWA1758, SWA4386, SWA3456.