Apparatus

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sensors Mode-S transponder

A1C2F1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N212WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1C2F1
Octal
50341361
Decimal
10,601,201
Country
US
Tail
N212WN
Type
B737
No current signal · last broadcast Jul 26, 21:55 UTC
Flights observed
731
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:55 UTC

Last known position

Most recent position reported by Mode-S A1C2F1.

Country allocation

The ICAO 24-bit address A1C2F1 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
SWA103 - 6 2026-06-27
SWA793 Southwest Airlines 5 2026-07-25
SWA694 - 5 2026-07-07
SWA4724 - 5 2026-07-03
SWA3354 Southwest Airlines 5 2026-05-02
SWA923 Southwest Airlines 4 2026-05-29
SWA57 Southwest Airlines 4 2026-06-16
SWA5048 - 4 2026-07-13
SWA3684 Southwest Airlines 4 2026-05-09
SWA30 Southwest Airlines 4 2026-06-01
SWA2599 Southwest Airlines 4 2026-04-17
SWA2350 - 4 2026-06-13
SWA2015 Southwest Airlines 4 2026-06-11
SWA1911 Southwest Airlines 4 2026-05-18
SWA1577 Southwest Airlines 4 2026-07-20
SWA1552 Southwest Airlines 4 2026-05-14
SWA1540 - 4 2026-07-13
SWA1476 Southwest Airlines 4 2026-05-01
SWA1375 Southwest Airlines 4 2026-04-27
SWA1303 - 4 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA956 LAX → SJC Jul 26, 21:05 UTCJul 26, 21:55 UTC50m
2026-07-26 SWA956 LAX → SJC Jul 26, 18:20 UTCJul 26, 20:00 UTC1h 40m
2026-07-26 SWA2671 PHL → ATL Jul 26, 15:45 UTCJul 26, 17:10 UTC1h 25m
2026-07-26 SWA2569 SJC → SAN Jul 26, 14:08 UTCJul 26, 14:51 UTC43m
2026-07-26 SWA354 SAN → OAK Jul 26, 05:55 UTCJul 26, 09:25 UTC3h 31m
2026-07-26 SWA1395 AUS → MDW Jul 26, 00:50 UTCJul 26, 03:20 UTC2h 30m
2026-07-25 SWA1365 OAK → LAX Jul 25, 22:00 UTCJul 25, 23:30 UTC1h 30m
2026-07-25 SWA3588 MDW → MSY Jul 25, 19:00 UTCJul 25, 20:30 UTC1h 30m
2026-07-25 SWA3588 MDW → MSY Jul 25, 18:59 UTCJul 25, 20:42 UTC1h 43m
2026-07-25 SWA22 DAL → AMA Jul 25, 17:10 UTCJul 25, 17:50 UTC40m
2026-07-25 SWA15 SJC → LAX Jul 25, 15:15 UTCJul 25, 15:55 UTC40m
2026-07-25 SWA15 SJC → LAX Jul 25, 11:55 UTCJul 25, 14:00 UTC2h 5m
2026-07-25 SWA1638 LGA → BNA Jul 25, 09:30 UTCJul 25, 10:40 UTC1h 10m
2026-07-25 SWA793 OAK → BUR Jul 25, 01:35 UTCJul 25, 02:20 UTC45m
2026-07-24 SWA793 OAK → BUR Jul 24, 22:45 UTCJul 25, 00:15 UTC1h 30m
2026-07-24 SWA2369 LAS → BUR Jul 24, 19:00 UTCJul 24, 21:40 UTC2h 40m
2026-07-24 SWA2369 LAS → BUR Jul 24, 16:20 UTCJul 24, 17:25 UTC1h 5m
2026-07-24 SWA834 ALB → MCO Jul 24, 14:30 UTCJul 24, 15:20 UTC50m
2026-07-24 SWA4865 HOU → RDU Jul 24, 03:55 UTCJul 24, 04:50 UTC55m
2026-07-24 SWA4865 HOU → RDU Jul 24, 03:54 UTCJul 24, 04:46 UTC52m
2026-07-24 SWA807 BUR → OAK Jul 24, 02:15 UTCJul 24, 03:05 UTC50m
2026-07-23 SWA461 BOS → BWI Jul 23, 21:25 UTCJul 24, 01:15 UTC3h 50m
2026-07-23 SWA461 BOS → BWI Jul 23, 21:23 UTCJul 24, 01:13 UTC3h 50m
2026-07-23 SWA3888 IAH → DEN Jul 23, 19:35 UTCJul 23, 20:20 UTC45m
2026-07-23 SWA4979 DAL → ORD Jul 23, 16:55 UTCJul 23, 18:25 UTC1h 30m
2026-07-23 SWA4979 DAL → ORD Jul 23, 16:52 UTCJul 23, 18:21 UTC1h 30m
2026-07-23 SWA4593 CMH → TPA Jul 23, 14:30 UTCJul 23, 16:05 UTC1h 35m
2026-07-23 SWA1937 OAK → SEA Jul 23, 02:15 UTCJul 23, 03:15 UTC1h 0m
2026-07-22 SWA1937 OAK → SEA Jul 22, 23:25 UTCJul 23, 01:25 UTC2h 0m
2026-07-22 SWA765 CLE → BWI Jul 22, 21:20 UTCJul 22, 22:15 UTC55m
2026-07-22 SWA765 CLE → BWI Jul 22, 21:16 UTCJul 22, 22:10 UTC54m
2026-07-22 SWA765 CLE → BWI Jul 22, 19:10 UTCJul 22, 20:15 UTC1h 5m
2026-07-22 SWA2431 DEN → LAS Jul 22, 16:45 UTCJul 22, 17:30 UTC45m
2026-07-22 SWA2944 LAX → LAS Jul 22, 14:50 UTCJul 22, 15:45 UTC55m
2026-07-22 SWA2282 STL → PHL Jul 22, 12:35 UTCJul 22, 13:35 UTC1h 0m
2026-07-22 SWA4136 SFO → LAX Jul 22, 02:00 UTCJul 22, 03:00 UTC1h 0m
2026-07-21 SWA3331 MDW → IAD Jul 21, 23:55 UTCJul 22, 01:15 UTC1h 20m
2026-07-21 SWA3356 SLC → OAK Jul 21, 21:55 UTCJul 21, 22:55 UTC1h 0m
2026-07-21 SWA3356 SLC → OAK Jul 21, 19:50 UTCJul 21, 20:55 UTC1h 5m
2026-07-21 SWA2855 - Jul 21, 17:20 UTCJul 21, 18:15 UTC55m
2026-07-21 SWA2855 LAS → SMF Jul 21, 17:16 UTCJul 21, 18:14 UTC58m
2026-07-21 SWA2865 PHX → SJC Jul 21, 12:25 UTCJul 21, 16:25 UTC4h 0m
2026-07-21 SWA1417 ABQ → OAK Jul 21, 03:20 UTCJul 21, 05:30 UTC2h 10m
2026-07-20 SWA1577 LGA → STL Jul 20, 22:40 UTCJul 21, 02:10 UTC3h 29m
2026-07-20 SWA1577 LGA → STL Jul 20, 20:25 UTCJul 20, 21:35 UTC1h 10m
2026-07-20 SWA1577 LGA → STL Jul 20, 17:10 UTCJul 20, 19:05 UTC1h 55m
2026-07-20 SWA1577 LGA → STL Jul 20, 14:15 UTCJul 20, 16:05 UTC1h 50m
2026-07-20 SWA1826 - Jul 20, 12:15 UTCJul 20, 13:10 UTC55m
2026-07-20 SWA392 BUR → SJC Jul 20, 03:45 UTCJul 20, 04:15 UTC30m
2026-07-20 SWA392 BUR → SJC Jul 20, 03:44 UTCJul 20, 04:54 UTC1h 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 N212WN page for operator, model, and routing details .

Mode-S A1C2F1 frequently asked

What is Mode-S code A1C2F1?
A1C2F1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N212WN.
Where is Mode-S A1C2F1 registered?
Mode-S code A1C2F1 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 A1C2F1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1C2F1, octal 50341361, decimal 10,601,201.
What flights does A1C2F1 operate?
Mode-S A1C2F1 has broadcast 20 distinct callsigns, including SWA103, SWA793, SWA694, SWA4724, SWA3354.