Apparatus

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sensors Mode-S transponder

AC24E4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8817L · BOEING 737 MAX 8 · operated by SOUTHWEST AIRLINES CO

Hex
AC24E4
Octal
53022344
Decimal
11,281,636
Country
US
Tail
N8817L
Type
B38M
Broadcasting now · callsign SWA4519 · 33,025 ft
Flights observed
669
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

AC24E4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC24E4 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
SWA2151 Southwest Airlines 6 2026-05-22
SWA1223 Southwest Airlines 6 2026-04-22
SWA4017 Southwest Airlines 5 2026-06-07
SWA2328 - 5 2026-07-02
SWA1092 Southwest Airlines 5 2026-05-11
SWA899 - 4 2026-06-23
SWA4574 Southwest Airlines 4 2026-05-21
SWA393 - 4 2026-06-29
SWA3317 Southwest Airlines 4 2026-06-12
SWA3291 Southwest Airlines 4 2026-04-16
SWA2675 Southwest Airlines 4 2026-05-05
SWA1406 Southwest Airlines 4 2026-05-14
SWA1312 - 4 2026-07-06
SWA940 Southwest Airlines 3 2026-04-14
SWA597 Southwest Airlines 3 2026-06-09
SWA4744 Southwest Airlines 3 2026-06-28
SWA4562 - 3 2026-04-13
SWA4313 Southwest Airlines 3 2026-04-16
SWA430 Southwest Airlines 3 2026-06-10
SWA4204 Southwest Airlines 3 2026-04-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA1488 - Jul 14, 00:55 UTCJul 14, 03:00 UTC2h 5m
2026-07-13 SWA3147 - Jul 13, 21:45 UTCJul 13, 23:00 UTC1h 15m
2026-07-13 SWA3147 ONT → DEN Jul 13, 21:45 UTCJul 13, 23:32 UTC1h 47m
2026-07-13 SWA2846 - Jul 13, 17:25 UTCJul 13, 20:45 UTC3h 20m
2026-07-13 SWA224 ATL → MDW Jul 13, 14:15 UTCJul 13, 15:40 UTC1h 25m
2026-07-13 SWA224 ATL → MDW Jul 13, 14:16 UTCJul 13, 15:40 UTC1h 24m
2026-07-13 SWA4969 DCA → ATL Jul 13, 11:40 UTCJul 13, 12:55 UTC1h 15m
2026-07-13 SWA4969 DCA → ATL Jul 13, 11:38 UTCJul 13, 12:56 UTC1h 18m
2026-07-13 SWA4990 ATL → DCA Jul 13, 02:40 UTCJul 13, 04:00 UTC1h 20m
2026-07-13 SWA4990 ATL → DCA Jul 13, 02:38 UTCJul 13, 03:56 UTC1h 18m
2026-07-12 SWA1314 DEN → ATL Jul 12, 22:35 UTCJul 13, 01:10 UTC2h 35m
2026-07-12 SWA1747 RSW → DEN Jul 12, 17:05 UTCJul 12, 20:35 UTC3h 30m
2026-07-12 SWA1747 RSW → DEN Jul 12, 17:05 UTCJul 12, 20:35 UTC3h 30m
2026-07-12 SWA867 - Jul 12, 13:35 UTCJul 12, 15:45 UTC2h 10m
2026-07-12 SWA4309 - Jul 12, 10:40 UTCJul 12, 12:30 UTC1h 50m
2026-07-12 SWA4309 MCO → PIT Jul 12, 10:36 UTCJul 12, 12:28 UTC1h 52m
2026-07-11 SWA1353 DAL → MCO Jul 11, 23:20 UTCJul 12, 01:40 UTC2h 20m
2026-07-11 SWA1184 - Jul 11, 19:50 UTCJul 11, 22:01 UTC2h 10m
2026-07-11 SWA3951 PHX → CMH Jul 11, 15:05 UTCJul 11, 18:30 UTC3h 25m
2026-07-11 SWA3951 PHX → CMH Jul 11, 15:05 UTCJul 11, 18:26 UTC3h 21m
2026-07-11 SWA964 - Jul 11, 12:50 UTCJul 11, 13:55 UTC1h 5m
2026-07-11 SWA964 LAX → PHX Jul 11, 12:49 UTCJul 11, 13:51 UTC1h 2m
2026-07-11 SWA2269 - Jul 11, 05:01 UTCJul 11, 08:25 UTC3h 25m
2026-07-11 SWA754 - Jul 11, 02:55 UTCJul 11, 04:05 UTC1h 10m
2026-07-10 SWA754 BOS → IND Jul 10, 23:30 UTCJul 11, 02:10 UTC2h 40m
2026-07-10 SWA4997 - Jul 10, 19:55 UTCJul 10, 22:20 UTC2h 25m
2026-07-10 SWA4327 - Jul 10, 17:40 UTCJul 10, 18:40 UTC1h 0m
2026-07-10 SWA4327 DAL → MCI Jul 10, 17:36 UTCJul 10, 18:39 UTC1h 3m
2026-07-10 SWA4053 - Jul 10, 15:25 UTCJul 10, 16:05 UTC40m
2026-07-10 SWA4053 TUL → DAL Jul 10, 15:20 UTCJul 10, 16:02 UTC42m
2026-07-10 SWA4445 - Jul 10, 13:40 UTCJul 10, 14:20 UTC40m
2026-07-10 SWA4188 - Jul 10, 11:20 UTCJul 10, 12:30 UTC1h 10m
2026-07-10 SWA2266 - Jul 10, 02:30 UTCJul 10, 04:55 UTC2h 25m
2026-07-10 SWA2266 - Jul 10, 00:25 UTCJul 10, 01:25 UTC1h 0m
2026-07-09 SWA2350 LAS → SJC Jul 9, 22:05 UTCJul 9, 23:10 UTC1h 5m
2026-07-09 SWA4676 - Jul 9, 20:10 UTCJul 9, 21:00 UTC50m
2026-07-09 SWA4685 - Jul 9, 17:55 UTCJul 9, 18:45 UTC50m
2026-07-09 SWA4685 ABQ → LAS Jul 9, 15:35 UTCJul 9, 16:45 UTC1h 10m
2026-07-09 SWA1943 - Jul 9, 12:45 UTCJul 9, 14:30 UTC1h 45m
2026-07-09 SWA4315 - Jul 9, 02:00 UTCJul 9, 04:15 UTC2h 15m
2026-07-08 SWA3523 - Jul 8, 23:50 UTCJul 9, 00:45 UTC55m
2026-07-08 SWA2809 - Jul 8, 20:40 UTCJul 8, 22:40 UTC2h 0m
2026-07-08 SWA2809 - Jul 8, 15:35 UTCJul 8, 19:20 UTC3h 45m
2026-07-08 SWA3711 - Jul 8, 12:45 UTCJul 8, 14:05 UTC1h 20m
2026-07-07 SWA4194 - Jul 7, 23:40 UTCJul 8, 01:15 UTC1h 35m
2026-07-07 SWA4357 SJC → MDW Jul 7, 18:35 UTCJul 7, 22:10 UTC3h 35m
2026-07-07 SWA943 - Jul 7, 15:55 UTCJul 7, 17:20 UTC1h 25m
2026-07-07 SWA1036 OAK → PDX Jul 7, 13:40 UTCJul 7, 14:50 UTC1h 10m
2026-07-07 SWA2890 SEA → OAK Jul 7, 04:45 UTCJul 7, 06:25 UTC1h 40m
2026-07-06 SWA2890 MDW → SEA Jul 6, 23:00 UTCJul 7, 02:50 UTC3h 50m

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 N8817L page for operator, model, and routing details .

Mode-S AC24E4 frequently asked

What is Mode-S code AC24E4?
AC24E4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8817L.
Where is Mode-S AC24E4 registered?
Mode-S code AC24E4 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 AC24E4 broadcasting right now?
Yes. Mode-S AC24E4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC24E4, octal 53022344, decimal 11,281,636.
What flights does AC24E4 operate?
Mode-S AC24E4 has broadcast 20 distinct callsigns, including SWA2151, SWA1223, SWA4017, SWA2328, SWA1092.