Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A26C12

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N255WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A26C12
Octal
50466022
Decimal
10,644,498
Country
US
Tail
N255WN
Type
B737
No current signal · last broadcast 4h ago
Flights observed
348
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A26C12.

Country allocation

The ICAO 24-bit address A26C12 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
SWA1552 Southwest Airlines 5 2026-05-18
SWA1426 - 5 2026-06-14
SWA1198 Southwest Airlines 5 2026-05-26
SWA921 Southwest Airlines 4 2026-06-15
SWA4382 Southwest Airlines 4 2026-05-15
SWA3531 Southwest Airlines 4 2026-05-22
SWA3225 Southwest Airlines 4 2026-06-03
SWA3144 Southwest Airlines 4 2026-05-29
SWA301 Southwest Airlines 4 2026-05-02
SWA2091 - 4 2026-06-17
SWA1766 Southwest Airlines 4 2026-06-04
SWA1363 Southwest Airlines 4 2026-05-14
SWA778 Southwest Airlines 3 2026-06-11
SWA4677 Southwest Airlines 3 2026-05-17
SWA4403 Southwest Airlines 3 2026-05-22
SWA3704 Southwest Airlines 3 2026-06-09
SWA3091 Southwest Airlines 3 2026-05-02
SWA2775 Southwest Airlines 3 2026-05-10
SWA2353 Southwest Airlines 3 2026-05-30
SWA1533 Southwest Airlines 3 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-19 SWA1295 - Jun 19, 00:59 UTCJun 19, 03:20 UTC2h 20m
2026-06-18 SWA3255 OAK → BUR Jun 18, 20:05 UTCJun 18, 22:00 UTC1h 55m
2026-06-18 SWA3207 OAK → BUR Jun 18, 16:30 UTCJun 18, 18:45 UTC2h 15m
2026-06-18 SWA3207 OAK → BUR Jun 18, 16:27 UTCJun 18, 18:42 UTC2h 16m
2026-06-18 SWA3693 SJC → PDX Jun 18, 14:00 UTCJun 18, 15:19 UTC1h 19m
2026-06-18 SWA3693 - Jun 18, 14:01 UTCJun 18, 15:20 UTC1h 20m
2026-06-18 SWA4884 SLC → OAK Jun 18, 04:40 UTCJun 18, 05:25 UTC45m
2026-06-18 SWA2180 - Jun 18, 00:10 UTCJun 18, 02:55 UTC2h 45m
2026-06-18 SWA2180 DAL → BUR Jun 18, 00:06 UTCJun 18, 02:49 UTC2h 43m
2026-06-17 SWA4054 - Jun 17, 22:00 UTCJun 17, 22:45 UTC45m
2026-06-17 SWA2091 - Jun 17, 20:05 UTCJun 17, 21:10 UTC1h 5m
2026-06-17 SWA2098 PHX → DAL Jun 17, 18:20 UTCJun 17, 19:00 UTC40m
2026-06-17 SWA102 - Jun 17, 16:20 UTCJun 17, 17:00 UTC40m
2026-06-17 SWA102 HOU → HRL Jun 17, 16:18 UTCJun 17, 17:01 UTC43m
2026-06-17 SWA532 - Jun 17, 13:35 UTCJun 17, 15:20 UTC1h 45m
2026-06-17 SWA532 BNA → HOU Jun 17, 13:33 UTCJun 17, 15:11 UTC1h 38m
2026-06-17 SWA3592 - Jun 17, 10:50 UTCJun 17, 12:00 UTC1h 10m
2026-06-16 SWA4375 LAX → KOA Jun 16, 22:55 UTCJun 17, 00:20 UTC1h 25m
2026-06-16 SWA4375 LAX → KOA Jun 16, 22:54 UTCJun 17, 00:18 UTC1h 24m
2026-06-16 SWA1063 - Jun 16, 21:00 UTCJun 16, 21:50 UTC50m
2026-06-16 SWA1063 AUS → RDU Jun 16, 17:40 UTCJun 16, 19:55 UTC2h 16m
2026-06-16 SWA1695 - Jun 16, 15:55 UTCJun 16, 16:45 UTC50m
2026-06-16 SWA1695 HOU → AUS Jun 16, 15:49 UTCJun 16, 16:42 UTC53m
2026-06-15 SWA2460 - Jun 15, 22:49 UTCJun 16, 02:54 UTC4h 5m
2026-06-15 SWA2294 - Jun 15, 18:29 UTCJun 15, 20:54 UTC2h 25m
2026-06-15 SWA2294 - Jun 15, 15:04 UTCJun 15, 17:15 UTC2h 10m
2026-06-15 SWA3445 - Jun 15, 12:35 UTCJun 15, 13:30 UTC55m
2026-06-15 SWA3445 RNO → LAS Jun 15, 12:33 UTCJun 15, 13:26 UTC53m
2026-06-15 SWA921 BNA → LGA Jun 15, 06:35 UTCJun 15, 07:30 UTC55m
2026-06-15 SWA921 BNA → LGA Jun 15, 06:40 UTCJun 15, 07:29 UTC50m
2026-06-15 SWA921 BNA → LGA Jun 15, 01:15 UTCJun 15, 05:25 UTC4h 10m
2026-06-14 SWA921 BNA → LGA Jun 14, 22:50 UTCJun 15, 00:10 UTC1h 20m
2026-06-14 SWA1868 NAS → BWI Jun 14, 18:00 UTCJun 14, 19:55 UTC1h 55m
2026-06-14 SWA1868 NAS → BWI Jun 14, 17:39 UTCJun 14, 19:47 UTC2h 8m
2026-06-14 SWA1867 BWI → NAS Jun 14, 14:15 UTCJun 14, 15:55 UTC1h 40m
2026-06-14 SWA1867 BWI → NAS Jun 14, 14:15 UTCJun 14, 16:23 UTC2h 8m
2026-06-14 SWA3876 MCI → LGA Jun 14, 10:45 UTCJun 14, 12:40 UTC1h 55m
2026-06-14 SWA1426 MCO → SRQ Jun 14, 01:50 UTCJun 14, 02:10 UTC20m
2026-06-13 SWA1426 LCK → MCO Jun 13, 22:30 UTCJun 14, 00:35 UTC2h 5m
2026-06-13 SWA1426 DCA → CMH Jun 13, 20:25 UTCJun 13, 21:20 UTC55m
2026-06-13 SWA1426 - Jun 13, 16:25 UTCJun 13, 19:00 UTC2h 35m
2026-06-13 SWA1426 - Jun 13, 12:25 UTCJun 13, 15:15 UTC2h 50m
2026-06-13 SWA2256 BNA → LGA Jun 13, 05:45 UTCJun 13, 06:25 UTC40m
2026-06-13 SWA2256 BNA → LGA Jun 13, 02:50 UTCJun 13, 04:40 UTC1h 50m
2026-06-12 SWA4908 MCO → PHX Jun 12, 23:45 UTCJun 13, 01:50 UTC2h 5m
2026-06-12 SWA4811 OAK → BUR Jun 12, 21:20 UTCJun 12, 22:25 UTC1h 5m
2026-06-12 SWA2121 PIT → BNA Jun 12, 19:15 UTCJun 12, 20:15 UTC1h 0m
2026-06-12 SWA2121 PIT → BNA Jun 12, 17:30 UTCJun 12, 18:15 UTC45m
2026-06-12 SWA3934 PHX → OAK Jun 12, 13:00 UTCJun 12, 16:20 UTC3h 20m
2026-06-12 SWA1165 LAX → PHX Jun 12, 10:40 UTCJun 12, 11:55 UTC1h 15m

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 N255WN page for operator, model, and routing details .

Mode-S A26C12 frequently asked

What is Mode-S code A26C12?
A26C12 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N255WN.
Where is Mode-S A26C12 registered?
Mode-S code A26C12 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 A26C12 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A26C12, octal 50466022, decimal 10,644,498.
What flights does A26C12 operate?
Mode-S A26C12 has broadcast 20 distinct callsigns, including SWA1552, SWA1426, SWA1198, SWA921, SWA4382.