Apparatus

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sensors Mode-S transponder

AC52FF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8931L · operated by SOUTHWEST AIRLINES CO

Hex
AC52FF
Octal
53051377
Decimal
11,293,439
Country
US
Tail
N8931L
Type
B38M
Broadcasting now · callsign SWA1823 · 36,000 ft
Flights observed
685
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

AC52FF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC52FF 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
SWA2893 Southwest Airlines 6 2026-05-12
SWA974 - 4 2026-07-13
SWA719 Southwest Airlines 4 2026-06-12
SWA406 Southwest Airlines 4 2026-05-27
SWA3930 Southwest Airlines 4 2026-05-18
SWA331 Southwest Airlines 4 2026-05-23
SWA1902 Southwest Airlines 4 2026-04-13
SWA186 - 4 2026-06-27
SWA1794 - 4 2026-07-06
SWA120 Southwest Airlines 4 2026-05-25
SWA4216 Southwest Airlines 3 2026-05-12
SWA392 - 3 2026-06-22
SWA3881 Southwest Airlines 3 2026-05-10
SWA3572 Southwest Airlines 3 2026-04-14
SWA3551 - 3 2026-04-13
SWA3372 - 3 2026-07-05
SWA3300 Southwest Airlines 3 2026-06-07
SWA3217 - 3 2026-06-22
SWA3166 Southwest Airlines 3 2026-05-19
SWA2926 Southwest Airlines 3 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA4274 - Jul 14, 12:40 UTCJul 14, 15:45 UTC3h 5m
2026-07-14 SWA208 - Jul 14, 04:05 UTCJul 14, 05:00 UTC55m
2026-07-14 SWA208 LAS → ONT Jul 14, 02:30 UTCJul 14, 03:05 UTC35m
2026-07-14 SWA2187 - Jul 14, 00:05 UTCJul 14, 00:55 UTC50m
2026-07-13 SWA3832 - Jul 13, 22:00 UTCJul 13, 23:05 UTC1h 5m
2026-07-13 SWA3832 SMF → SNA Jul 13, 21:58 UTCJul 13, 23:07 UTC1h 9m
2026-07-13 SWA4533 LAS → SMF Jul 13, 19:55 UTCJul 13, 20:55 UTC1h 0m
2026-07-13 SWA974 - Jul 13, 13:55 UTCJul 13, 18:05 UTC4h 10m
2026-07-13 SWA974 - Jul 13, 11:05 UTCJul 13, 12:45 UTC1h 40m
2026-07-13 SWA974 - Jul 13, 10:35 UTCJul 13, 11:00 UTC25m
2026-07-13 SWA4859 - Jul 13, 03:10 UTCJul 13, 05:10 UTC2h 0m
2026-07-12 SWA938 - Jul 12, 22:50 UTCJul 13, 01:50 UTC3h 0m
2026-07-12 SWA938 - Jul 12, 20:20 UTCJul 12, 21:30 UTC1h 10m
2026-07-12 SWA3700 - Jul 12, 17:15 UTCJul 12, 19:01 UTC1h 45m
2026-07-12 SWA2211 OAK → MDW Jul 12, 12:24 UTCJul 12, 16:02 UTC3h 39m
2026-07-12 SWA2211 OAK → MDW Jul 12, 12:25 UTCJul 12, 16:05 UTC3h 40m
2026-07-12 SWA2490 LGB → OAK Jul 12, 04:20 UTCJul 12, 05:15 UTC55m
2026-07-11 SWA1427 BNA → LGB Jul 11, 23:55 UTCJul 12, 03:35 UTC3h 40m
2026-07-11 SWA1427 MCO → AUS Jul 11, 23:51 UTCJul 12, 03:31 UTC3h 40m
2026-07-11 SWA2928 - Jul 11, 20:45 UTCJul 11, 22:30 UTC1h 45m
2026-07-11 SWA2840 - Jul 11, 17:35 UTCJul 11, 19:45 UTC2h 10m
2026-07-11 SWA2086 - Jul 11, 14:50 UTCJul 11, 16:20 UTC1h 30m
2026-07-11 SWA2086 MSY → MCO Jul 11, 14:51 UTCJul 11, 16:06 UTC1h 15m
2026-07-11 SWA3312 DAL → MSY Jul 11, 12:40 UTCJul 11, 13:40 UTC1h 0m
2026-07-11 SWA2445 - Jul 11, 10:50 UTCJul 11, 11:40 UTC50m
2026-07-11 SWA2445 LBB → DAL Jul 11, 10:46 UTCJul 11, 11:36 UTC50m
2026-07-11 SWA4789 - Jul 11, 02:50 UTCJul 11, 03:30 UTC40m
2026-07-10 SWA3582 - Jul 10, 22:45 UTCJul 11, 01:20 UTC2h 35m
2026-07-10 SWA3582 SAN → DAL Jul 10, 22:42 UTCJul 11, 01:18 UTC2h 37m
2026-07-10 SWA1314 - Jul 10, 17:15 UTCJul 10, 21:15 UTC4h 0m
2026-07-10 SWA4524 - Jul 10, 15:05 UTCJul 10, 16:10 UTC1h 5m
2026-07-10 SWA967 AUS → BWI Jul 10, 10:37 UTCJul 10, 13:29 UTC2h 52m
2026-07-10 SWA967 AUS → BWI Jul 10, 10:40 UTCJul 10, 13:30 UTC2h 50m
2026-07-10 SWA2186 LAS → AUS Jul 10, 03:40 UTCJul 10, 05:55 UTC2h 15m
2026-07-10 SWA2003 - Jul 10, 00:00 UTCJul 10, 02:35 UTC2h 35m
2026-07-09 SWA2003 HOU → LAS Jul 9, 23:54 UTCJul 10, 02:30 UTC2h 36m
2026-07-09 SWA41 DAL → HOU Jul 9, 21:41 UTCJul 9, 22:33 UTC53m
2026-07-09 SWA41 - Jul 9, 21:45 UTCJul 9, 22:35 UTC50m
2026-07-09 SWA2218 LAS → DAL Jul 9, 18:25 UTCJul 9, 20:40 UTC2h 15m
2026-07-09 SWA2218 - Jul 9, 16:30 UTCJul 9, 17:10 UTC40m
2026-07-09 SWA3347 - Jul 9, 14:40 UTCJul 9, 15:35 UTC55m
2026-07-09 SWA2066 - Jul 9, 05:55 UTCJul 9, 08:05 UTC2h 10m
2026-07-09 SWA1545 DEN → HOU Jul 9, 02:55 UTCJul 9, 04:48 UTC1h 54m
2026-07-09 SWA1545 - Jul 9, 03:00 UTCJul 9, 04:45 UTC1h 45m
2026-07-09 SWA2945 - Jul 9, 00:10 UTCJul 9, 01:35 UTC1h 25m
2026-07-08 SWA2945 - Jul 8, 20:00 UTCJul 8, 23:00 UTC3h 0m
2026-07-08 SWA4337 LAS → MKE Jul 8, 15:50 UTCJul 8, 18:55 UTC3h 5m
2026-07-08 SWA4179 PDX → LAS Jul 8, 12:30 UTCJul 8, 14:15 UTC1h 45m
2026-07-08 SWA432 SMF → PDX Jul 8, 04:20 UTCJul 8, 05:25 UTC1h 5m
2026-07-07 SWA1524 - Jul 7, 23:20 UTCJul 8, 03:15 UTC3h 55m

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 N8931L page for operator, model, and routing details .

Mode-S AC52FF frequently asked

What is Mode-S code AC52FF?
AC52FF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8931L.
Where is Mode-S AC52FF registered?
Mode-S code AC52FF 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 AC52FF broadcasting right now?
Yes. Mode-S AC52FF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC52FF, octal 53051377, decimal 11,293,439.
What flights does AC52FF operate?
Mode-S AC52FF has broadcast 20 distinct callsigns, including SWA2893, SWA974, SWA719, SWA406, SWA3930.