Apparatus

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sensors Mode-S transponder

ABB601

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8538V · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABB601
Octal
52733001
Decimal
11,253,249
Country
US
Tail
N8538V
Type
B738
No current signal · last broadcast 20m ago
Flights observed
384
Distinct callsigns
20
Country
US
Last broadcast
20m ago

Last known position

Most recent position reported by Mode-S ABB601.

Country allocation

The ICAO 24-bit address ABB601 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
SWA2720 Southwest Airlines 5 2026-07-08
SWA712 Southwest Airlines 4 2026-05-31
SWA4539 - 4 2026-07-07
SWA449 - 4 2026-07-12
SWA2035 - 4 2026-06-28
SWA193 - 4 2026-07-04
SWA647 Southwest Airlines 3 2026-06-20
SWA3316 - 3 2026-06-27
SWA2528 - 3 2026-07-05
SWA1363 Southwest Airlines 3 2026-06-15
SWA1122 - 3 2026-06-29
SWA1077 Southwest Airlines 3 2026-05-20
SWA1064 Southwest Airlines 3 2026-05-20
SWA984 - 2 2026-06-26
SWA8750 Southwest Airlines 2 2026-05-17
SWA823 - 2 2026-06-20
SWA781 Southwest Airlines 2 2026-06-07
SWA753 - 2 2026-07-02
SWA738 Southwest Airlines 2 2026-06-13
SWA608 Southwest Airlines 2 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA3306 - Jul 14, 04:50 UTCJul 14, 06:15 UTC1h 25m
2026-07-14 SWA1885 GEG → PHX Jul 14, 01:30 UTCJul 14, 03:40 UTC2h 10m
2026-07-13 SWA4440 - Jul 13, 22:40 UTCJul 14, 00:15 UTC1h 35m
2026-07-13 SWA4440 DEN → GEG Jul 13, 22:36 UTCJul 14, 00:26 UTC1h 50m
2026-07-13 SWA2945 - Jul 13, 19:30 UTCJul 13, 21:20 UTC1h 50m
2026-07-13 SWA4104 - Jul 13, 15:05 UTCJul 13, 18:10 UTC3h 5m
2026-07-13 SWA3751 - Jul 13, 12:35 UTCJul 13, 13:40 UTC1h 5m
2026-07-13 SWA4792 PHX → SLC Jul 13, 05:50 UTCJul 13, 07:05 UTC1h 15m
2026-07-13 SWA4792 PHX → SLC Jul 13, 05:50 UTCJul 13, 07:01 UTC1h 11m
2026-07-13 SWA4317 - Jul 13, 04:15 UTCJul 13, 05:10 UTC55m
2026-07-13 SWA543 OAK → ABQ Jul 13, 00:06 UTCJul 13, 02:00 UTC1h 54m
2026-07-13 SWA543 OAK → ABQ Jul 13, 00:10 UTCJul 13, 02:05 UTC1h 55m
2026-07-12 SWA3519 SAN → OAK Jul 12, 22:06 UTCJul 12, 23:06 UTC1h 0m
2026-07-12 SWA3519 - Jul 12, 22:05 UTCJul 12, 22:15 UTC10m
2026-07-12 SWA1139 LAS → SAN Jul 12, 15:45 UTCJul 12, 20:35 UTC4h 50m
2026-07-12 SWA2403 - Jul 12, 13:30 UTCJul 12, 14:15 UTC45m
2026-07-12 SWA2403 LAX → LAS Jul 12, 13:30 UTCJul 12, 14:15 UTC45m
2026-07-12 SWA1875 - Jul 12, 03:35 UTCJul 12, 06:45 UTC3h 10m
2026-07-12 SWA449 - Jul 12, 00:50 UTCJul 12, 02:30 UTC1h 40m
2026-07-11 SWA542 - Jul 11, 20:15 UTCJul 11, 21:20 UTC1h 5m
2026-07-11 SWA542 BNA → JAX Jul 11, 20:10 UTCJul 11, 21:19 UTC1h 9m
2026-07-11 SWA4472 - Jul 11, 17:05 UTCJul 11, 19:10 UTC2h 5m
2026-07-11 SWA4472 BDL → BNA Jul 11, 17:05 UTCJul 11, 19:06 UTC2h 1m
2026-07-11 SWA427 - Jul 11, 14:55 UTCJul 11, 15:45 UTC50m
2026-07-11 SWA183 - Jul 11, 12:40 UTCJul 11, 13:50 UTC1h 10m
2026-07-11 SWA4272 - Jul 11, 00:40 UTCJul 11, 02:20 UTC1h 40m
2026-07-10 SWA3769 - Jul 10, 19:40 UTCJul 10, 23:10 UTC3h 30m
2026-07-10 SWA3769 SMF → MDW Jul 10, 19:37 UTCJul 10, 22:54 UTC3h 18m
2026-07-10 SWA2504 LGB → SMF Jul 10, 17:25 UTCJul 10, 18:25 UTC1h 0m
2026-07-10 SWA1580 - Jul 10, 14:05 UTCJul 10, 16:00 UTC1h 55m
2026-07-10 SWA1296 DAL → DEN Jul 10, 11:15 UTCJul 10, 12:50 UTC1h 35m
2026-07-10 SWA4015 - Jul 10, 01:45 UTCJul 10, 03:50 UTC2h 5m
2026-07-09 SWA4520 - Jul 9, 22:50 UTCJul 10, 01:00 UTC2h 10m
2026-07-09 SWA3187 ORF → MDW Jul 9, 20:15 UTCJul 9, 22:00 UTC1h 45m
2026-07-09 SWA3187 ORF → MDW Jul 9, 20:11 UTCJul 9, 21:54 UTC1h 43m
2026-07-09 SWA4688 BNA → ORF Jul 9, 17:35 UTCJul 9, 19:00 UTC1h 25m
2026-07-09 SWA1775 - Jul 9, 14:55 UTCJul 9, 16:05 UTC1h 10m
2026-07-09 SWA1775 - Jul 9, 13:15 UTCJul 9, 13:50 UTC35m
2026-07-09 SWA2133 - Jul 9, 11:00 UTCJul 9, 11:40 UTC40m
2026-07-09 SWA479 - Jul 9, 00:30 UTCJul 9, 02:15 UTC1h 45m
2026-07-09 SWA479 AUS → IND Jul 9, 00:28 UTCJul 9, 02:30 UTC2h 2m
2026-07-08 SWA867 - Jul 8, 20:40 UTCJul 8, 23:35 UTC2h 55m
2026-07-08 SWA3896 - Jul 8, 14:55 UTCJul 8, 19:25 UTC4h 30m
2026-07-08 SWA1704 DEN → SAN Jul 8, 04:09 UTCJul 8, 06:03 UTC1h 55m
2026-07-08 SWA1704 - Jul 8, 04:10 UTCJul 8, 06:10 UTC2h 0m
2026-07-08 SWA2720 ATL → LGA Jul 8, 00:35 UTCJul 8, 02:15 UTC1h 40m
2026-07-08 SWA2720 ATL → LGA Jul 8, 00:34 UTCJul 8, 02:38 UTC2h 4m
2026-07-07 SWA2720 ATL → LGA Jul 7, 21:45 UTCJul 7, 23:05 UTC1h 20m
2026-07-07 SWA21 BWI → ISP Jul 7, 18:40 UTCJul 7, 20:10 UTC1h 30m
2026-07-07 SWA12 DAL → BNA Jul 7, 14:50 UTCJul 7, 17:25 UTC2h 35m

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 N8538V page for operator, model, and routing details .

Mode-S ABB601 frequently asked

What is Mode-S code ABB601?
ABB601 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8538V.
Where is Mode-S ABB601 registered?
Mode-S code ABB601 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 ABB601 broadcasting right now?
No active broadcast right now. Last signal was 20m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB601, octal 52733001, decimal 11,253,249.
What flights does ABB601 operate?
Mode-S ABB601 has broadcast 20 distinct callsigns, including SWA2720, SWA712, SWA4539, SWA449, SWA2035.