Apparatus

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sensors Mode-S transponder

ABAA1A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8503A · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABAA1A
Octal
52725032
Decimal
11,250,202
Country
US
Tail
N8503A
Type
B738
Broadcasting now · callsign SWA4359 · 10,950 ft
Flights observed
688
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Current position

ABAA1A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABAA1A 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
SWA2026 - 6 2026-07-05
SWA2377 - 5 2026-07-09
SWA192 - 5 2026-07-15
SWA1375 Southwest Airlines 5 2026-07-25
SWA51 - 4 2026-07-12
SWA2525 Southwest Airlines 4 2026-06-09
SWA2449 Southwest Airlines 4 2026-05-29
SWA2335 Southwest Airlines 4 2026-06-10
SWA2124 Southwest Airlines 4 2026-06-14
SWA1681 - 4 2026-06-21
SWA1530 Southwest Airlines 4 2026-05-05
SWA1257 Southwest Airlines 4 2026-05-04
SWA893 Southwest Airlines 3 2026-04-18
SWA875 - 3 2026-07-19
SWA541 - 3 2026-07-09
SWA505 Southwest Airlines 3 2026-05-07
SWA485 - 3 2026-06-30
SWA4806 Southwest Airlines 3 2026-06-01
SWA4698 Southwest Airlines 3 2026-06-12
SWA4259 - 3 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA188 BWI → FLL Jul 26, 21:05 UTCJul 26, 22:30 UTC1h 25m
2026-07-26 SWA3157 LGB → OAK Jul 26, 16:27 UTCJul 26, 19:32 UTC3h 5m
2026-07-26 SWA3157 LGB → OAK Jul 26, 16:30 UTCJul 26, 19:40 UTC3h 10m
2026-07-26 SWA2285 BUR → OAK Jul 26, 13:00 UTCJul 26, 14:55 UTC1h 55m
2026-07-26 SWA3170 TPA → IND Jul 26, 01:30 UTCJul 26, 02:30 UTC1h 0m
2026-07-25 SWA1375 PHX → DEN Jul 25, 22:00 UTCJul 26, 00:30 UTC2h 30m
2026-07-25 SWA1375 PHX → DEN Jul 25, 21:59 UTCJul 26, 00:25 UTC2h 26m
2026-07-25 SWA1375 PHX → DEN Jul 25, 19:45 UTCJul 25, 20:50 UTC1h 5m
2026-07-25 SWA3004 MSY → MDW Jul 25, 17:15 UTCJul 25, 18:30 UTC1h 15m
2026-07-25 SWA1725 MDW → OAK Jul 25, 13:50 UTCJul 25, 15:55 UTC2h 5m
2026-07-25 SWA1725 MDW → OAK Jul 25, 11:25 UTCJul 25, 12:55 UTC1h 30m
2026-07-25 SWA4703 ATL → MDW Jul 25, 04:30 UTCJul 25, 06:10 UTC1h 40m
2026-07-25 SWA4703 ATL → MDW Jul 25, 04:28 UTCJul 25, 06:07 UTC1h 39m
2026-07-25 SWA4662 STL → CMH Jul 25, 01:45 UTCJul 25, 02:35 UTC50m
2026-07-25 SWA4662 STL → CMH Jul 25, 01:45 UTCJul 25, 02:36 UTC51m
2026-07-24 SWA2470 LAS → OAK Jul 24, 21:30 UTCJul 25, 00:10 UTC2h 40m
2026-07-24 SWA2803 PVD → MCO Jul 24, 18:35 UTCJul 24, 20:10 UTC1h 35m
2026-07-24 SWA2803 PVD → MCO Jul 24, 18:30 UTCJul 24, 20:08 UTC1h 38m
2026-07-24 SWA3295 MSP → LAS Jul 24, 13:40 UTCJul 24, 16:40 UTC3h 0m
2026-07-24 SWA3674 CMH → TPA Jul 24, 02:00 UTCJul 24, 04:00 UTC2h 0m
2026-07-24 SWA3674 CMH → TPA Jul 24, 01:59 UTCJul 24, 03:57 UTC1h 59m
2026-07-23 SWA2609 BWI → ALB Jul 23, 23:20 UTCJul 24, 00:50 UTC1h 30m
2026-07-23 SWA1307 SNA → PHX Jul 23, 20:55 UTCJul 23, 22:25 UTC1h 30m
2026-07-23 SWA4759 STL → ECP Jul 23, 18:15 UTCJul 23, 19:25 UTC1h 10m
2026-07-23 SWA4759 STL → ECP Jul 23, 18:10 UTCJul 23, 19:21 UTC1h 11m
2026-07-23 SWA4892 PHX → SFO Jul 23, 14:25 UTCJul 23, 17:05 UTC2h 40m
2026-07-23 SWA4892 PHX → SFO Jul 23, 14:20 UTCJul 23, 17:11 UTC2h 51m
2026-07-23 SWA4989 LAS → DAL Jul 23, 11:45 UTCJul 23, 13:20 UTC1h 35m
2026-07-23 SWA2862 BUR → SJC Jul 23, 05:05 UTCJul 23, 05:50 UTC45m
2026-07-23 SWA2862 BUR → SJC Jul 23, 00:45 UTCJul 23, 03:50 UTC3h 5m
2026-07-22 SWA3750 BUR → SMF Jul 22, 20:00 UTCJul 22, 22:40 UTC2h 40m
2026-07-22 SWA3827 PVD → FLL Jul 22, 17:20 UTCJul 22, 18:35 UTC1h 15m
2026-07-22 SWA2359 BLI → OAK Jul 22, 15:10 UTCJul 22, 16:15 UTC1h 5m
2026-07-22 SWA3171 OAK → PSP Jul 22, 13:00 UTCJul 22, 13:40 UTC40m
2026-07-22 SWA1684 DEN → GEG Jul 22, 03:45 UTCJul 22, 05:25 UTC1h 40m
2026-07-21 SWA2675 LAX → SFO Jul 21, 23:40 UTCJul 22, 01:45 UTC2h 5m
2026-07-21 SWA2675 LAX → SFO Jul 21, 23:36 UTCJul 22, 01:43 UTC2h 7m
2026-07-21 SWA1524 SEA → SMF Jul 21, 21:35 UTCJul 21, 22:25 UTC50m
2026-07-21 SWA1524 SEA → SMF Jul 21, 19:25 UTCJul 21, 20:45 UTC1h 20m
2026-07-21 SWA4386 ATL → MSY Jul 21, 15:30 UTCJul 21, 18:10 UTC2h 40m
2026-07-21 SWA4754 MCO → BNA Jul 21, 11:35 UTCJul 21, 13:25 UTC1h 50m
2026-07-21 SWA2090 BNA → DAL Jul 21, 02:10 UTCJul 21, 04:00 UTC1h 50m
2026-07-21 SWA2090 BNA → DAL Jul 21, 02:06 UTCJul 21, 04:00 UTC1h 54m
2026-07-21 SWA1810 BNA → LGA Jul 21, 00:10 UTCJul 21, 01:00 UTC50m
2026-07-20 SWA4323 BUR → OAK Jul 20, 20:40 UTCJul 20, 22:50 UTC2h 10m
2026-07-20 SWA758 BUF → BWI Jul 20, 16:25 UTCJul 20, 17:15 UTC50m
2026-07-19 SWA330 DAL → BUF Jul 19, 19:00 UTCJul 19, 21:30 UTC2h 30m
2026-07-19 SWA875 PHX → DAL Jul 19, 15:45 UTCJul 19, 17:50 UTC2h 5m
2026-07-19 SWA875 PHX → DAL Jul 19, 15:42 UTCJul 19, 17:45 UTC2h 3m
2026-07-19 SWA1388 DAL → PHX Jul 19, 12:20 UTCJul 19, 14:15 UTC1h 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 N8503A page for operator, model, and routing details .

Mode-S ABAA1A frequently asked

What is Mode-S code ABAA1A?
ABAA1A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8503A.
Where is Mode-S ABAA1A registered?
Mode-S code ABAA1A 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 ABAA1A broadcasting right now?
Yes. Mode-S ABAA1A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABAA1A, octal 52725032, decimal 11,250,202.
What flights does ABAA1A operate?
Mode-S ABAA1A has broadcast 20 distinct callsigns, including SWA2026, SWA2377, SWA192, SWA1375, SWA51.