Apparatus

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sensors Mode-S transponder

ABB1C2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8524Z · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABB1C2
Octal
52730702
Decimal
11,252,162
Country
US
Tail
N8524Z
Type
B738
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
729
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S ABB1C2.

Country allocation

The ICAO 24-bit address ABB1C2 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
SWA1418 - 7 2026-07-01
SWA1685 Southwest Airlines 6 2026-04-16
SWA901 Southwest Airlines 4 2026-04-27
SWA875 Southwest Airlines 4 2026-07-24
SWA4392 - 4 2026-07-16
SWA4363 Southwest Airlines 4 2026-05-10
SWA4018 Southwest Airlines 4 2026-07-08
SWA2127 Southwest Airlines 4 2026-05-15
SWA2069 - 4 2026-06-30
SWA1346 Southwest Airlines 4 2026-04-17
SWA960 - 3 2026-06-30
SWA709 - 3 2026-07-02
SWA636 Southwest Airlines 3 2026-05-30
SWA626 - 3 2026-07-05
SWA4662 Southwest Airlines 3 2026-07-24
SWA4619 Southwest Airlines 3 2026-07-07
SWA4220 Southwest Airlines 3 2026-06-25
SWA3894 - 3 2026-06-30
SWA3837 Southwest Airlines 3 2026-05-26
SWA3780 Southwest Airlines 3 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1458 OAK → LAS Jul 26, 20:15 UTCJul 26, 21:10 UTC55m
2026-07-26 SWA2819 OAK → EUG Jul 26, 17:10 UTCJul 26, 19:10 UTC2h 0m
2026-07-26 SWA2810 ROC → MDW Jul 26, 15:10 UTCJul 26, 16:10 UTC1h 0m
2026-07-26 SWA2810 ROC → MDW Jul 26, 12:10 UTCJul 26, 13:55 UTC1h 45m
2026-07-25 SWA3078 CVG → DEN Jul 25, 23:20 UTCJul 26, 00:35 UTC1h 15m
2026-07-25 SWA1430 DEN → PDX Jul 25, 20:45 UTCJul 25, 21:50 UTC1h 5m
2026-07-25 SWA285 BWI → ALB Jul 25, 17:15 UTCJul 25, 19:40 UTC2h 25m
2026-07-25 SWA285 BWI → ALB Jul 25, 17:10 UTCJul 25, 19:30 UTC2h 20m
2026-07-25 SWA897 ONT → SJC Jul 25, 14:55 UTCJul 25, 16:00 UTC1h 5m
2026-07-25 SWA897 ONT → SJC Jul 25, 14:50 UTCJul 25, 15:57 UTC1h 7m
2026-07-25 SWA2771 BUR → SFO Jul 25, 10:55 UTCJul 25, 13:20 UTC2h 25m
2026-07-25 SWA3459 ATL → RDU Jul 25, 04:05 UTCJul 25, 06:15 UTC2h 10m
2026-07-25 SWA3459 ATL → RDU Jul 25, 04:00 UTCJul 25, 06:16 UTC2h 16m
2026-07-25 SWA4426 DEN → BOS Jul 25, 00:55 UTCJul 25, 02:45 UTC1h 50m
2026-07-24 SWA1269 ATL → LGA Jul 24, 23:20 UTCJul 24, 23:50 UTC30m
2026-07-24 SWA1269 ATL → LGA Jul 24, 23:15 UTCJul 24, 23:47 UTC32m
2026-07-24 SWA1269 ATL → LGA Jul 24, 21:20 UTCJul 24, 22:20 UTC1h 0m
2026-07-24 SWA4396 MHT → BWI Jul 24, 18:20 UTCJul 24, 19:20 UTC1h 0m
2026-07-24 SWA875 SJC → SAN Jul 24, 15:10 UTCJul 24, 17:15 UTC2h 5m
2026-07-24 SWA2066 MDW → STL Jul 24, 04:10 UTCJul 24, 06:20 UTC2h 10m
2026-07-24 SWA2066 MDW → STL Jul 24, 04:05 UTCJul 24, 06:14 UTC2h 9m
2026-07-24 SWA4662 STL → CMH Jul 24, 02:15 UTCJul 24, 03:05 UTC50m
2026-07-23 SWA2470 LAS → OAK Jul 23, 22:45 UTCJul 24, 01:20 UTC2h 35m
2026-07-23 SWA2803 PVD → MCO Jul 23, 19:35 UTCJul 23, 21:15 UTC1h 40m
2026-07-23 SWA2803 PVD → MCO Jul 23, 19:30 UTCJul 23, 21:00 UTC1h 30m
2026-07-23 SWA4529 - Jul 23, 16:40 UTCJul 23, 18:15 UTC1h 35m
2026-07-23 SWA2749 SJC → SAN Jul 23, 13:15 UTCJul 23, 14:40 UTC1h 25m
2026-07-23 SWA2710 STL → BOS Jul 23, 02:15 UTCJul 23, 06:16 UTC4h 1m
2026-07-23 SWA2710 STL → BOS Jul 23, 01:00 UTCJul 23, 02:35 UTC1h 35m
2026-07-22 SWA2699 MCI → DCA Jul 22, 21:17 UTCJul 22, 22:39 UTC1h 22m
2026-07-22 SWA2699 MCI → DCA Jul 22, 21:20 UTCJul 22, 22:40 UTC1h 20m
2026-07-22 SWA425 CMH → DCA Jul 22, 16:30 UTCJul 22, 19:45 UTC3h 15m
2026-07-22 SWA146 MKE → PHX Jul 22, 11:35 UTCJul 22, 14:35 UTC3h 0m
2026-07-22 SWA1015 FLL → MSY Jul 22, 04:00 UTCJul 22, 05:25 UTC1h 25m
2026-07-21 SWA3299 MDW → SJU Jul 21, 23:05 UTCJul 22, 03:05 UTC4h 0m
2026-07-21 SWA3298 - Jul 21, 15:20 UTCJul 21, 19:55 UTC4h 35m
2026-07-21 SWA3897 STL → BWI Jul 21, 01:10 UTCJul 21, 02:45 UTC1h 35m
2026-07-20 SWA4661 BNA → PHL Jul 20, 23:20 UTCJul 21, 00:10 UTC49m
2026-07-20 SWA4974 SAT → DAL Jul 20, 21:20 UTCJul 20, 22:30 UTC1h 10m
2026-07-20 SWA4974 SAT → DAL Jul 20, 21:14 UTCJul 20, 22:26 UTC1h 12m
2026-07-20 SWA3009 - Jul 20, 18:15 UTCJul 20, 19:45 UTC1h 30m
2026-07-20 SWA366 AUS → MSY Jul 20, 16:00 UTCJul 20, 17:05 UTC1h 5m
2026-07-20 SWA366 - Jul 20, 16:00 UTCJul 20, 16:30 UTC30m
2026-07-20 SWA4149 BNA → AUS Jul 20, 13:10 UTCJul 20, 14:50 UTC1h 40m
2026-07-20 SWA4581 BNA → BOS Jul 20, 10:40 UTCJul 20, 11:45 UTC1h 5m
2026-07-20 SWA4581 BNA → BOS Jul 20, 10:37 UTCJul 20, 11:41 UTC1h 4m
2026-07-20 SWA4822 HOU → LAS Jul 20, 01:45 UTCJul 20, 02:50 UTC1h 5m
2026-07-20 SWA4822 HOU → LAS Jul 20, 01:45 UTCJul 20, 02:56 UTC1h 11m
2026-07-19 SWA3711 - Jul 19, 22:55 UTCJul 20, 00:35 UTC1h 40m
2026-07-19 SWA3619 DEN → BOS Jul 19, 17:55 UTCJul 19, 21:50 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 N8524Z page for operator, model, and routing details .

Mode-S ABB1C2 frequently asked

What is Mode-S code ABB1C2?
ABB1C2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8524Z.
Where is Mode-S ABB1C2 registered?
Mode-S code ABB1C2 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 ABB1C2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB1C2, octal 52730702, decimal 11,252,162.
What flights does ABB1C2 operate?
Mode-S ABB1C2 has broadcast 20 distinct callsigns, including SWA1418, SWA1685, SWA901, SWA875, SWA4392.