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sensors Mode-S transponder

AC5B89

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8959Q · operated by SOUTHWEST AIRLINES CO

Hex
AC5B89
Octal
53055611
Decimal
11,295,625
Country
US
Tail
N8959Q
Type
B38M
No current signal · last broadcast 2h ago
Flights observed
648
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AC5B89.

Country allocation

The ICAO 24-bit address AC5B89 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
SWA1875 - 5 2026-07-11
SWA660 - 4 2026-06-30
SWA406 Southwest Airlines 4 2026-05-26
SWA3490 Southwest Airlines 4 2026-06-25
SWA3331 Southwest Airlines 4 2026-06-06
SWA2369 Southwest Airlines 4 2026-05-12
SWA2329 Southwest Airlines 4 2026-05-13
SWA2190 - 4 2026-04-13
SWA1527 - 4 2026-06-23
SWA858 - 3 2026-07-04
SWA706 - 3 2026-07-03
SWA4575 Southwest Airlines 3 2026-06-11
SWA431 - 3 2026-06-18
SWA420 Southwest Airlines 3 2026-05-16
SWA40 Southwest Airlines 3 2026-06-13
SWA3769 Southwest Airlines 3 2026-05-17
SWA3726 - 3 2026-07-01
SWA3573 Southwest Airlines 3 2026-04-22
SWA3294 Southwest Airlines 3 2026-05-05
SWA3290 - 3 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SWA673 - Jul 13, 23:00 UTCJul 14, 02:50 UTC3h 50m
2026-07-13 SWA2983 MSY → BNA Jul 13, 20:25 UTCJul 13, 21:40 UTC1h 15m
2026-07-13 SWA2983 MSY → BNA Jul 13, 20:21 UTCJul 13, 21:36 UTC1h 15m
2026-07-13 SWA595 BNA → MSY Jul 13, 18:00 UTCJul 13, 19:15 UTC1h 15m
2026-07-13 SWA595 BNA → MSY Jul 13, 18:01 UTCJul 13, 19:13 UTC1h 12m
2026-07-13 SWA724 BOS → BNA Jul 13, 14:45 UTCJul 13, 16:55 UTC2h 10m
2026-07-13 SWA884 - Jul 13, 12:30 UTCJul 13, 13:35 UTC1h 5m
2026-07-13 SWA4680 ROC → BWI Jul 13, 10:25 UTCJul 13, 11:20 UTC55m
2026-07-13 SWA1081 - Jul 13, 03:40 UTCJul 13, 04:25 UTC45m
2026-07-13 SWA1081 BWI → ROC Jul 13, 03:34 UTCJul 13, 04:22 UTC48m
2026-07-12 SWA1391 - Jul 12, 21:30 UTCJul 13, 01:10 UTC3h 40m
2026-07-12 SWA1873 - Jul 12, 16:20 UTCJul 12, 18:55 UTC2h 35m
2026-07-12 SWA1873 MCO → SXM Jul 12, 16:20 UTCJul 12, 19:06 UTC2h 46m
2026-07-12 SWA3812 - Jul 12, 12:35 UTCJul 12, 14:01 UTC1h 25m
2026-07-12 SWA3812 BNA → MCO Jul 12, 12:34 UTCJul 12, 13:59 UTC1h 25m
2026-07-12 SWA4477 - Jul 12, 10:20 UTCJul 12, 11:15 UTC55m
2026-07-12 SWA3687 RSW → CMH Jul 12, 01:15 UTCJul 12, 03:15 UTC2h 0m
2026-07-12 SWA3687 RSW → CMH Jul 12, 01:11 UTCJul 12, 03:04 UTC1h 53m
2026-07-11 SWA1297 - Jul 11, 22:05 UTCJul 12, 00:15 UTC2h 10m
2026-07-11 SWA374 - Jul 11, 18:00 UTCJul 11, 20:25 UTC2h 25m
2026-07-11 SWA2470 - Jul 11, 14:20 UTCJul 11, 16:40 UTC2h 20m
2026-07-11 SWA2470 STL → MIA Jul 11, 14:18 UTCJul 11, 16:36 UTC2h 18m
2026-07-11 SWA3139 - Jul 11, 11:45 UTCJul 11, 13:00 UTC1h 15m
2026-07-11 SWA4912 STL → OMA Jul 11, 04:45 UTCJul 11, 05:45 UTC1h 0m
2026-07-11 SWA1875 - Jul 11, 00:25 UTCJul 11, 03:01 UTC2h 35m
2026-07-11 SWA1875 FLL → STL Jul 11, 00:24 UTCJul 11, 02:49 UTC2h 25m
2026-07-10 SWA379 - Jul 10, 19:55 UTCJul 10, 22:50 UTC2h 55m
2026-07-10 SWA1788 - Jul 10, 16:50 UTCJul 10, 18:35 UTC1h 45m
2026-07-10 SWA2773 - Jul 10, 13:55 UTCJul 10, 15:30 UTC1h 35m
2026-07-10 SWA2773 MDW → ECP Jul 10, 13:50 UTCJul 10, 15:33 UTC1h 43m
2026-07-10 SWA1866 PPM → MDW Jul 10, 10:15 UTCJul 10, 12:50 UTC2h 35m
2026-07-10 SWA2777 - Jul 10, 01:05 UTCJul 10, 03:35 UTC2h 30m
2026-07-09 SWA4106 BOS → MDW Jul 9, 21:35 UTCJul 9, 23:45 UTC2h 10m
2026-07-09 SWA4106 BOS → MDW Jul 9, 21:32 UTCJul 9, 23:40 UTC2h 8m
2026-07-09 SWA3690 DEN → BOS Jul 9, 16:38 UTCJul 9, 19:53 UTC3h 15m
2026-07-09 SWA3690 DEN → BOS Jul 9, 16:40 UTCJul 9, 19:55 UTC3h 15m
2026-07-09 SWA4156 BOS → DEN Jul 9, 10:45 UTCJul 9, 14:45 UTC4h 0m
2026-07-09 SWA459 BNA → BOS Jul 9, 03:00 UTCJul 9, 05:00 UTC2h 0m
2026-07-09 SWA459 BNA → BOS Jul 9, 02:57 UTCJul 9, 05:02 UTC2h 5m
2026-07-08 SWA1488 - Jul 8, 23:20 UTCJul 9, 01:45 UTC2h 25m
2026-07-08 SWA3591 SLC → DEN Jul 8, 19:40 UTCJul 8, 20:55 UTC1h 15m
2026-07-08 SWA2951 - Jul 8, 15:25 UTCJul 8, 18:15 UTC2h 50m
2026-07-08 SWA4212 - Jul 8, 12:10 UTCJul 8, 14:00 UTC1h 50m
2026-07-08 SWA1879 - Jul 8, 02:00 UTCJul 8, 02:45 UTC45m
2026-07-07 SWA3561 - Jul 7, 21:00 UTCJul 7, 23:50 UTC2h 50m
2026-07-07 SWA1401 DAL → SAT Jul 7, 19:10 UTCJul 7, 19:51 UTC41m
2026-07-07 SWA1401 - Jul 7, 19:10 UTCJul 7, 19:55 UTC45m
2026-07-07 SWA1401 - Jul 7, 16:50 UTCJul 7, 18:05 UTC1h 15m
2026-07-07 SWA2006 - Jul 7, 14:15 UTCJul 7, 15:10 UTC55m
2026-07-07 SWA433 BNA → AUS Jul 7, 11:15 UTCJul 7, 13:00 UTC1h 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 N8959Q page for operator, model, and routing details .

Mode-S AC5B89 frequently asked

What is Mode-S code AC5B89?
AC5B89 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8959Q.
Where is Mode-S AC5B89 registered?
Mode-S code AC5B89 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 AC5B89 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC5B89, octal 53055611, decimal 11,295,625.
What flights does AC5B89 operate?
Mode-S AC5B89 has broadcast 20 distinct callsigns, including SWA1875, SWA660, SWA406, SWA3490, SWA3331.