Apparatus

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sensors Mode-S transponder

A1F94C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N226WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1F94C
Octal
50374514
Decimal
10,615,116
Country
US
Tail
N226WN
Type
B737
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
731
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A1F94C.

Country allocation

The ICAO 24-bit address A1F94C 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
SWA3243 Southwest Airlines 9 2026-04-14
SWA509 Southwest Airlines 5 2026-07-26
SWA3719 - 5 2026-04-18
SWA1920 Southwest Airlines 5 2026-07-21
SWA439 - 4 2026-06-29
SWA4355 Southwest Airlines 4 2026-06-05
SWA3767 - 4 2026-04-13
SWA3270 Southwest Airlines 4 2026-04-27
SWA3199 Southwest Airlines 4 2026-05-22
SWA30 Southwest Airlines 4 2026-04-17
SWA2866 - 4 2026-07-10
SWA2864 Southwest Airlines 4 2026-05-11
SWA2812 - 4 2026-06-22
SWA2700 - 4 2026-04-16
SWA1894 - 4 2026-07-10
SWA1505 Southwest Airlines 4 2026-05-20
SWA1353 - 4 2026-07-09
SWA1322 - 4 2026-07-12
SWA114 - 4 2026-07-16
SWA988 Southwest Airlines 3 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1652 PHX → MCI Jul 26, 21:35 UTCJul 26, 23:00 UTC1h 25m
2026-07-26 SWA1652 PHX → MCI Jul 26, 19:30 UTCJul 26, 20:40 UTC1h 10m
2026-07-26 SWA2992 DEN → LGA Jul 26, 16:00 UTCJul 26, 18:20 UTC2h 20m
2026-07-26 SWA2992 DEN → LGA Jul 26, 16:01 UTCJul 26, 18:16 UTC2h 15m
2026-07-26 SWA4780 BWI → MHT Jul 26, 13:40 UTCJul 26, 15:00 UTC1h 20m
2026-07-26 SWA2478 BWI → PVD Jul 26, 11:10 UTCJul 26, 12:15 UTC1h 5m
2026-07-26 SWA509 SFO → PHX Jul 26, 01:20 UTCJul 26, 02:35 UTC1h 15m
2026-07-25 SWA2095 SJC → LAX Jul 25, 20:45 UTCJul 25, 23:10 UTC2h 25m
2026-07-25 SWA2095 SJC → LAX Jul 25, 19:40 UTCJul 25, 23:05 UTC3h 25m
2026-07-25 SWA722 DEN → SJD Jul 25, 15:35 UTCJul 25, 16:30 UTC55m
2026-07-25 SWA722 DEN → SJD Jul 25, 15:31 UTCJul 25, 18:00 UTC2h 29m
2026-07-25 SWA3111 PHX → OKC Jul 25, 11:00 UTCJul 25, 12:15 UTC1h 15m
2026-07-25 SWA3111 PHX → OKC Jul 25, 10:59 UTCJul 25, 12:14 UTC1h 16m
2026-07-25 SWA3881 DCA → MCO Jul 25, 03:45 UTCJul 25, 05:20 UTC1h 35m
2026-07-25 SWA3881 DCA → MCO Jul 25, 03:44 UTCJul 25, 05:19 UTC1h 35m
2026-07-25 SWA233 PWM → BWI Jul 25, 01:20 UTCJul 25, 02:50 UTC1h 30m
2026-07-24 SWA3882 OAK → SAN Jul 24, 23:00 UTCJul 25, 00:25 UTC1h 25m
2026-07-24 SWA1461 MDW → MIA Jul 24, 20:15 UTCJul 24, 22:05 UTC1h 50m
2026-07-24 SWA1461 MDW → MIA Jul 24, 16:30 UTCJul 24, 17:45 UTC1h 15m
2026-07-24 SWA1294 - Jul 24, 13:20 UTCJul 24, 15:25 UTC2h 5m
2026-07-24 SWA4729 SNA → OAK Jul 24, 10:45 UTCJul 24, 12:15 UTC1h 30m
2026-07-24 SWA8512 MDW → PVD Jul 24, 03:45 UTCJul 24, 05:10 UTC1h 25m
2026-07-24 SWA8512 MDW → PVD Jul 24, 03:40 UTCJul 24, 05:12 UTC1h 32m
2026-07-22 SWA1937 OAK → SEA Jul 22, 01:40 UTCJul 22, 02:50 UTC1h 10m
2026-07-21 SWA1937 OAK → SEA Jul 21, 22:40 UTCJul 22, 00:45 UTC2h 5m
2026-07-21 SWA1922 SJD → PHX Jul 21, 18:40 UTCJul 21, 20:20 UTC1h 40m
2026-07-21 SWA1920 PHX → SJD Jul 21, 15:45 UTCJul 21, 16:40 UTC55m
2026-07-21 SWA4835 MDW → OKC Jul 21, 11:40 UTCJul 21, 13:55 UTC2h 15m
2026-07-21 SWA1659 - Jul 21, 01:50 UTCJul 21, 02:50 UTC1h 0m
2026-07-20 SWA2993 SMF → DEN Jul 20, 22:10 UTCJul 21, 00:15 UTC2h 4m
2026-07-20 SWA4966 BUR → SMF Jul 20, 20:00 UTCJul 20, 21:00 UTC1h 0m
2026-07-20 SWA4966 BUR → SMF Jul 20, 20:00 UTCJul 20, 20:56 UTC56m
2026-07-20 SWA1268 LAS → BLI Jul 20, 18:15 UTCJul 20, 19:10 UTC55m
2026-07-20 SWA1268 LAS → BLI Jul 20, 18:14 UTCJul 20, 19:06 UTC52m
2026-07-20 SWA1268 LAS → BLI Jul 20, 14:25 UTCJul 20, 17:25 UTC3h 0m
2026-07-20 SWA4 - Jul 20, 12:10 UTCJul 20, 12:55 UTC45m
2026-07-19 SWA1674 - Jul 19, 17:35 UTCJul 19, 19:40 UTC2h 5m
2026-07-19 SWA3460 LGB → OAK Jul 19, 12:50 UTCJul 19, 14:10 UTC1h 20m
2026-07-18 SWA1079 - Jul 18, 14:55 UTCJul 18, 15:55 UTC1h 0m
2026-07-18 SWA1899 MDW → DCA Jul 18, 12:25 UTCJul 18, 13:35 UTC1h 10m
2026-07-18 SWA4437 SFO → LAS Jul 18, 00:39 UTCJul 18, 01:34 UTC55m
2026-07-18 SWA4437 SFO → LAS Jul 18, 00:37 UTCJul 18, 01:40 UTC1h 3m
2026-07-17 SWA3414 - Jul 17, 21:34 UTCJul 17, 22:45 UTC1h 10m
2026-07-17 SWA3414 PWM → BWI Jul 17, 21:29 UTCJul 17, 22:42 UTC1h 13m
2026-07-17 SWA297 - Jul 17, 19:35 UTCJul 17, 20:40 UTC1h 5m
2026-07-17 SWA297 - Jul 17, 17:44 UTCJul 17, 18:29 UTC45m
2026-07-17 SWA297 STL → RDU Jul 17, 15:15 UTCJul 17, 16:49 UTC1h 35m
2026-07-17 SWA3139 - Jul 17, 13:00 UTCJul 17, 13:50 UTC50m
2026-07-17 SWA3139 OMA → STL Jul 17, 12:57 UTCJul 17, 13:44 UTC47m
2026-07-17 SWA1374 - Jul 17, 01:49 UTCJul 17, 03:10 UTC1h 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 N226WN page for operator, model, and routing details .

Mode-S A1F94C frequently asked

What is Mode-S code A1F94C?
A1F94C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N226WN.
Where is Mode-S A1F94C registered?
Mode-S code A1F94C 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 A1F94C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1F94C, octal 50374514, decimal 10,615,116.
What flights does A1F94C operate?
Mode-S A1F94C has broadcast 20 distinct callsigns, including SWA3243, SWA509, SWA3719, SWA1920, SWA439.