Apparatus

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sensors Mode-S transponder

AC4FB5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8924Q · operated by SOUTHWEST AIRLINES CO

Hex
AC4FB5
Octal
53047665
Decimal
11,292,597
Country
US
Tail
N8924Q
Type
B38M
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
754
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S AC4FB5.

Country allocation

The ICAO 24-bit address AC4FB5 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
SWA2328 Southwest Airlines 5 2026-06-11
SWA4997 Southwest Airlines 4 2026-07-05
SWA467 Southwest Airlines 4 2026-06-05
SWA3972 - 4 2026-04-13
SWA3610 Southwest Airlines 4 2026-07-20
SWA3579 - 4 2026-07-02
SWA3325 - 4 2026-07-19
SWA3084 Southwest Airlines 4 2026-05-18
SWA1685 Southwest Airlines 4 2026-04-15
SWA1010 - 4 2026-07-14
SWA995 - 3 2026-07-13
SWA939 Southwest Airlines 3 2026-04-13
SWA928 - 3 2026-04-13
SWA862 Southwest Airlines 3 2026-05-27
SWA756 Southwest Airlines 3 2026-07-26
SWA700 Southwest Airlines 3 2026-06-01
SWA572 Southwest Airlines 3 2026-04-26
SWA4549 Southwest Airlines 3 2026-04-17
SWA4322 - 3 2026-07-17
SWA3784 Southwest Airlines 3 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2475 SJC → BUR Jul 26, 20:05 UTCJul 26, 21:15 UTC1h 10m
2026-07-26 SWA245 DSM → DEN Jul 26, 17:05 UTCJul 26, 18:55 UTC1h 50m
2026-07-26 SWA2521 OAK → BLI Jul 26, 14:15 UTCJul 26, 15:55 UTC1h 40m
2026-07-26 SWA1594 PHX → OAK Jul 26, 12:25 UTCJul 26, 13:15 UTC50m
2026-07-26 SWA756 DAL → LGA Jul 26, 10:25 UTCJul 26, 11:15 UTC50m
2026-07-26 SWA756 DAL → LGA Jul 26, 10:25 UTCJul 26, 11:11 UTC46m
2026-07-26 SWA4577 SJC → OGG Jul 26, 02:15 UTCJul 26, 03:05 UTC50m
2026-07-26 SWA3425 SJC → LAX Jul 26, 00:00 UTCJul 26, 00:45 UTC45m
2026-07-25 SWA3819 DEN → SAT Jul 25, 20:35 UTCJul 25, 23:05 UTC2h 30m
2026-07-25 SWA1936 SEA → AUS Jul 25, 15:40 UTCJul 25, 19:15 UTC3h 35m
2026-07-25 SWA1936 SEA → AUS Jul 25, 15:38 UTCJul 25, 19:10 UTC3h 32m
2026-07-25 SWA1936 SMF → SEA Jul 25, 13:00 UTCJul 25, 14:20 UTC1h 20m
2026-07-25 SWA4226 OAK → BUR Jul 25, 07:05 UTCJul 25, 08:10 UTC1h 5m
2026-07-25 SWA4226 OAK → BUR Jul 25, 07:04 UTCJul 25, 08:10 UTC1h 6m
2026-07-25 SWA5051 AUS → ATL Jul 25, 04:54 UTCJul 25, 06:03 UTC1h 10m
2026-07-25 SWA5051 AUS → ATL Jul 25, 04:55 UTCJul 25, 06:10 UTC1h 15m
2026-07-25 SWA2490 OAK → PHX Jul 25, 02:53 UTCJul 25, 03:45 UTC52m
2026-07-25 SWA2490 OAK → PHX Jul 25, 02:55 UTCJul 25, 03:45 UTC50m
2026-07-25 SWA149 SFO → PHX Jul 25, 01:10 UTCJul 25, 02:05 UTC55m
2026-07-25 SWA149 SFO → PHX Jul 25, 01:06 UTCJul 25, 01:59 UTC53m
2026-07-24 SWA149 SFO → PHX Jul 24, 23:05 UTCJul 25, 00:00 UTC55m
2026-07-24 SWA4621 PHX → GEG Jul 24, 19:15 UTCJul 24, 21:15 UTC2h 0m
2026-07-24 SWA4621 PHX → GEG Jul 24, 19:14 UTCJul 24, 21:39 UTC2h 25m
2026-07-24 SWA2188 DAL → LGA Jul 24, 14:35 UTCJul 24, 17:50 UTC3h 15m
2026-07-24 SWA2188 DAL → LGA Jul 24, 14:32 UTCJul 24, 17:45 UTC3h 13m
2026-07-24 SWA1351 ATL → MDW Jul 24, 06:00 UTCJul 24, 06:45 UTC45m
2026-07-24 SWA1351 ATL → MDW Jul 24, 05:57 UTCJul 24, 06:40 UTC43m
2026-07-24 SWA1231 SFO → BUR Jul 24, 03:40 UTCJul 24, 05:00 UTC1h 20m
2026-07-24 SWA4786 SJU → AUS Jul 24, 00:50 UTCJul 24, 02:25 UTC1h 35m
2026-07-23 SWA1323 STL → SRQ Jul 23, 22:30 UTCJul 23, 23:35 UTC1h 5m
2026-07-23 SWA4795 PHX → RDU Jul 23, 19:40 UTCJul 23, 21:25 UTC1h 45m
2026-07-23 SWA4795 PHX → RDU Jul 23, 17:25 UTCJul 23, 18:45 UTC1h 20m
2026-07-23 SWA4572 HOU → LAS Jul 23, 13:10 UTCJul 23, 16:10 UTC3h 0m
2026-07-22 SWA2190 LAX → SFO Jul 22, 22:55 UTCJul 23, 01:55 UTC3h 0m
2026-07-22 SWA37 DAL → HOU Jul 22, 20:40 UTCJul 22, 21:30 UTC50m
2026-07-22 SWA4274 HOU → ELP Jul 22, 12:30 UTCJul 22, 15:40 UTC3h 10m
2026-07-22 SWA3551 LAS → DEN Jul 22, 05:26 UTCJul 22, 06:33 UTC1h 7m
2026-07-22 SWA3545 LAS → SJC Jul 22, 01:20 UTCJul 22, 03:45 UTC2h 25m
2026-07-21 SWA4371 MHT → BWI Jul 21, 22:05 UTCJul 21, 23:50 UTC1h 45m
2026-07-21 SWA258 AUS → BNA Jul 21, 19:10 UTCJul 21, 20:55 UTC1h 45m
2026-07-21 SWA1313 OAK → LAX Jul 21, 15:30 UTCJul 21, 17:55 UTC2h 25m
2026-07-21 SWA1788 GEG → LAS Jul 21, 12:15 UTCJul 21, 14:10 UTC1h 55m
2026-07-21 SWA4273 - Jul 21, 07:05 UTCJul 21, 09:10 UTC2h 5m
2026-07-21 SWA3160 - Jul 21, 05:25 UTCJul 21, 06:15 UTC50m
2026-07-21 SWA2949 DAL → LAS Jul 21, 01:15 UTCJul 21, 03:15 UTC2h 0m
2026-07-20 SWA2769 SJC → AUS Jul 20, 22:00 UTCJul 21, 00:05 UTC2h 4m
2026-07-20 SWA3610 BWI → PVD Jul 20, 20:05 UTCJul 20, 20:55 UTC50m
2026-07-20 SWA4473 STL → SEA Jul 20, 18:15 UTCJul 20, 19:00 UTC45m
2026-07-20 SWA2270 LAS → MDW Jul 20, 13:25 UTCJul 20, 16:35 UTC3h 10m
2026-07-20 SWA1080 IND → RSW Jul 20, 03:05 UTCJul 20, 05:20 UTC2h 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 N8924Q page for operator, model, and routing details .

Mode-S AC4FB5 frequently asked

What is Mode-S code AC4FB5?
AC4FB5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8924Q.
Where is Mode-S AC4FB5 registered?
Mode-S code AC4FB5 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 AC4FB5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC4FB5, octal 53047665, decimal 11,292,597.
What flights does AC4FB5 operate?
Mode-S AC4FB5 has broadcast 20 distinct callsigns, including SWA2328, SWA4997, SWA467, SWA3972, SWA3610.