Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC4279

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8896L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC4279
Octal
53041171
Decimal
11,289,209
Country
US
Tail
N8896L
Type
B38M
No current signal · last broadcast 5h ago
Flights observed
672
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S AC4279.

Country allocation

The ICAO 24-bit address AC4279 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
SWA120 Southwest Airlines 6 2026-04-17
SWA3457 Southwest Airlines 5 2026-04-17
SWA2391 Southwest Airlines 5 2026-06-04
SWA4798 - 4 2026-07-02
SWA4127 Southwest Airlines 4 2026-04-22
SWA3208 - 4 2026-06-27
SWA2004 Southwest Airlines 4 2026-04-18
SWA172 - 4 2026-07-01
SWA1361 Southwest Airlines 4 2026-07-02
SWA1266 Southwest Airlines 4 2026-05-19
SWA706 - 3 2026-06-26
SWA7 Southwest Airlines 3 2026-05-07
SWA699 Southwest Airlines 3 2026-05-27
SWA4573 Southwest Airlines 3 2026-05-12
SWA4472 - 3 2026-06-29
SWA4342 Southwest Airlines 3 2026-04-22
SWA3937 - 3 2026-06-19
SWA3917 Southwest Airlines 3 2026-04-15
SWA3599 Southwest Airlines 3 2026-06-06
SWA3581 Southwest Airlines 3 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 SWA3070 OAK → PHX Jul 15, 01:45 UTCJul 15, 03:25 UTC1h 40m
2026-07-14 SWA2286 LAS → OAK Jul 14, 23:45 UTCJul 15, 00:50 UTC1h 5m
2026-07-14 SWA2286 LAS → OAK Jul 14, 23:41 UTCJul 15, 00:48 UTC1h 7m
2026-07-14 SWA2286 PHX → LAS Jul 14, 21:45 UTCJul 14, 22:35 UTC50m
2026-07-14 SWA3304 - Jul 14, 18:30 UTCJul 14, 20:40 UTC2h 10m
2026-07-14 SWA26 - Jul 14, 13:50 UTCJul 14, 16:45 UTC2h 55m
2026-07-14 SWA3364 MDW → LAX Jul 14, 04:00 UTCJul 14, 07:25 UTC3h 25m
2026-07-14 SWA1782 - Jul 14, 01:35 UTCJul 14, 02:15 UTC40m
2026-07-13 SWA1782 LAS → DTW Jul 13, 20:55 UTCJul 14, 00:40 UTC3h 45m
2026-07-13 SWA1782 GEG → LAS Jul 13, 17:25 UTCJul 13, 19:25 UTC2h 0m
2026-07-13 SWA3433 DEN → GEG Jul 13, 14:30 UTCJul 13, 16:15 UTC1h 45m
2026-07-13 SWA2942 - Jul 13, 10:30 UTCJul 13, 12:25 UTC1h 55m
2026-07-13 SWA753 LAS → MKE Jul 13, 03:55 UTCJul 13, 07:10 UTC3h 15m
2026-07-13 SWA753 OAK → LAS Jul 13, 01:30 UTCJul 13, 02:45 UTC1h 15m
2026-07-12 SWA1474 LAS → OAK Jul 12, 05:01 UTCJul 12, 06:05 UTC1h 5m
2026-07-12 SWA2187 - Jul 12, 01:40 UTCJul 12, 02:25 UTC45m
2026-07-12 SWA2187 SNA → LAS Jul 12, 01:38 UTCJul 12, 02:21 UTC43m
2026-07-11 SWA4510 - Jul 11, 23:45 UTCJul 12, 00:40 UTC55m
2026-07-11 SWA702 - Jul 11, 21:45 UTCJul 11, 22:40 UTC55m
2026-07-11 SWA3496 SMF → SAN Jul 11, 19:15 UTCJul 11, 20:30 UTC1h 15m
2026-07-11 SWA334 - Jul 11, 17:05 UTCJul 11, 18:10 UTC1h 5m
2026-07-11 SWA334 SNA → SMF Jul 11, 17:01 UTCJul 11, 18:04 UTC1h 3m
2026-07-11 SWA3348 PHX → SNA Jul 11, 15:20 UTCJul 11, 16:10 UTC50m
2026-07-11 SWA2954 - Jul 11, 10:45 UTCJul 11, 13:50 UTC3h 5m
2026-07-11 SWA3300 PHX → MKE Jul 11, 03:41 UTCJul 11, 06:32 UTC2h 51m
2026-07-11 SWA3300 - Jul 11, 03:45 UTCJul 11, 06:35 UTC2h 50m
2026-07-11 SWA1033 LAS → PHX Jul 11, 01:10 UTCJul 11, 01:55 UTC45m
2026-07-10 SWA3333 - Jul 10, 23:15 UTCJul 11, 00:05 UTC50m
2026-07-10 SWA3333 RNO → LAS Jul 10, 23:11 UTCJul 11, 00:04 UTC54m
2026-07-10 SWA1221 - Jul 10, 21:25 UTCJul 10, 22:10 UTC45m
2026-07-10 SWA3507 - Jul 10, 19:15 UTCJul 10, 20:05 UTC50m
2026-07-10 SWA3507 SAN → LAS Jul 10, 19:12 UTCJul 10, 20:04 UTC52m
2026-07-10 SWA3507 SJC → SAN Jul 10, 16:25 UTCJul 10, 17:25 UTC1h 0m
2026-07-10 SWA2497 - Jul 10, 14:10 UTCJul 10, 15:00 UTC50m
2026-07-10 SWA2497 LGB → SJC Jul 10, 14:06 UTCJul 10, 14:55 UTC49m
2026-07-10 SWA4352 PHX → LGB Jul 10, 02:30 UTCJul 10, 03:25 UTC55m
2026-07-10 SWA4352 PHX → LGB Jul 10, 02:28 UTCJul 10, 03:23 UTC55m
2026-07-10 SWA3159 - Jul 10, 00:30 UTCJul 10, 01:20 UTC50m
2026-07-09 SWA381 - Jul 9, 22:25 UTCJul 9, 23:20 UTC55m
2026-07-09 SWA441 GEG → OAK Jul 9, 19:35 UTCJul 9, 21:15 UTC1h 40m
2026-07-09 SWA2306 LAS → GEG Jul 9, 16:35 UTCJul 9, 18:30 UTC1h 55m
2026-07-09 SWA2306 LAS → GEG Jul 9, 16:34 UTCJul 9, 18:28 UTC1h 54m
2026-07-09 SWA2964 DAL → LAS Jul 9, 12:40 UTCJul 9, 15:00 UTC2h 20m
2026-07-09 SWA2964 MSY → DAL Jul 9, 10:30 UTCJul 9, 11:35 UTC1h 5m
2026-07-09 SWA2134 - Jul 9, 02:05 UTCJul 9, 03:10 UTC1h 5m
2026-07-08 SWA2320 - Jul 8, 22:40 UTCJul 9, 00:50 UTC2h 10m
2026-07-08 SWA336 - Jul 8, 17:25 UTCJul 8, 19:35 UTC2h 10m
2026-07-08 SWA8500 STL → DAL Jul 8, 15:05 UTCJul 8, 16:20 UTC1h 15m
2026-07-08 SWA3236 MCO → STL Jul 8, 00:10 UTCJul 8, 02:05 UTC1h 55m
2026-07-07 SWA2529 MDW → MCO Jul 7, 19:55 UTCJul 7, 22:40 UTC2h 45m

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 N8896L page for operator, model, and routing details .

Mode-S AC4279 frequently asked

What is Mode-S code AC4279?
AC4279 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8896L.
Where is Mode-S AC4279 registered?
Mode-S code AC4279 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 AC4279 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC4279, octal 53041171, decimal 11,289,209.
What flights does AC4279 operate?
Mode-S AC4279 has broadcast 20 distinct callsigns, including SWA120, SWA3457, SWA2391, SWA4798, SWA4127.