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 SWA2324 · 10,750 ft
Flights observed
605
Distinct callsigns
20
Country
US
Last broadcast
2h ago

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
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
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
SWA4135 Southwest Airlines 3 2026-05-28
SWA404 - 3 2026-06-26
SWA3882 - 3 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA2794 - Jul 14, 15:20 UTCJul 14, 18:20 UTC3h 0m
2026-07-14 SWA745 BOS → MDW Jul 14, 11:45 UTCJul 14, 13:40 UTC1h 55m
2026-07-13 SWA4930 - Jul 13, 23:15 UTCJul 14, 04:45 UTC5h 30m
2026-07-13 SWA4930 SAN → BOS Jul 13, 23:11 UTCJul 14, 04:42 UTC5h 32m
2026-07-13 SWA2259 LAS → SAN Jul 13, 21:15 UTCJul 13, 22:00 UTC45m
2026-07-13 SWA2104 - Jul 13, 17:45 UTCJul 13, 19:50 UTC2h 5m
2026-07-13 SWA2104 MDW → ICT Jul 13, 15:15 UTCJul 13, 16:30 UTC1h 15m
2026-07-13 SWA1270 ATL → MDW Jul 13, 12:20 UTCJul 13, 13:45 UTC1h 25m
2026-07-13 SWA4595 - Jul 13, 02:50 UTCJul 13, 04:25 UTC1h 35m
2026-07-12 SWA1545 - Jul 12, 23:15 UTCJul 13, 01:10 UTC1h 55m
2026-07-12 SWA824 STL → DEN Jul 12, 20:10 UTCJul 12, 21:50 UTC1h 40m
2026-07-12 SWA824 STL → DEN Jul 12, 20:06 UTCJul 12, 21:50 UTC1h 44m
2026-07-12 SWA2473 LGA → STL Jul 12, 16:20 UTCJul 12, 18:15 UTC1h 55m
2026-07-12 SWA2473 LGA → STL Jul 12, 16:17 UTCJul 12, 18:13 UTC1h 56m
2026-07-12 SWA1573 MDW → LGA Jul 12, 13:25 UTCJul 12, 15:01 UTC1h 35m
2026-07-12 SWA1573 MDW → LGA Jul 12, 13:25 UTCJul 12, 14:56 UTC1h 31m
2026-07-12 SWA1573 - Jul 12, 10:15 UTCJul 12, 12:15 UTC2h 0m
2026-07-12 SWA51 - Jul 12, 03:40 UTCJul 12, 04:20 UTC40m
2026-07-12 SWA51 DAL → HOU Jul 12, 03:37 UTCJul 12, 04:21 UTC44m
2026-07-11 SWA51 - Jul 11, 23:05 UTCJul 12, 02:40 UTC3h 35m
2026-07-11 SWA51 - Jul 11, 18:25 UTCJul 11, 19:50 UTC1h 25m
2026-07-11 SWA1945 - Jul 11, 15:45 UTCJul 11, 16:55 UTC1h 10m
2026-07-11 SWA1945 IND → BWI Jul 11, 15:41 UTCJul 11, 16:53 UTC1h 12m
2026-07-11 SWA364 TPA → IND Jul 11, 13:00 UTCJul 11, 14:55 UTC1h 55m
2026-07-11 SWA2232 DEN → TPA Jul 11, 03:10 UTCJul 11, 06:20 UTC3h 10m
2026-07-10 SWA2632 MCO → DEN Jul 10, 20:50 UTCJul 11, 00:50 UTC4h 0m
2026-07-10 SWA2919 - Jul 10, 16:45 UTCJul 10, 19:20 UTC2h 35m
2026-07-10 SWA4761 - Jul 10, 13:05 UTCJul 10, 15:35 UTC2h 30m
2026-07-10 SWA4646 - Jul 10, 09:35 UTCJul 10, 11:40 UTC2h 5m
2026-07-10 SWA4840 - Jul 10, 01:35 UTCJul 10, 03:45 UTC2h 10m
2026-07-09 SWA4720 AUS → MCO Jul 9, 21:20 UTCJul 9, 23:30 UTC2h 10m
2026-07-09 SWA4860 - Jul 9, 18:00 UTCJul 9, 20:05 UTC2h 5m
2026-07-09 SWA541 - Jul 9, 15:25 UTCJul 9, 16:35 UTC1h 10m
2026-07-09 SWA4598 - Jul 9, 12:45 UTCJul 9, 13:50 UTC1h 5m
2026-07-09 SWA2377 - Jul 9, 02:55 UTCJul 9, 06:10 UTC3h 15m
2026-07-09 SWA2377 SPQ → LAS Jul 9, 01:15 UTCJul 9, 02:00 UTC45m
2026-07-08 SWA4259 - Jul 8, 22:20 UTCJul 9, 00:15 UTC1h 55m
2026-07-08 SWA2083 - Jul 8, 17:35 UTCJul 8, 21:00 UTC3h 25m
2026-07-08 SWA541 - Jul 8, 15:15 UTCJul 8, 16:25 UTC1h 10m
2026-07-08 SWA541 BNA → JAX Jul 8, 15:15 UTCJul 8, 16:24 UTC1h 9m
2026-07-08 SWA1722 - Jul 8, 12:50 UTCJul 8, 13:55 UTC1h 5m
2026-07-08 SWA2399 - Jul 8, 02:45 UTCJul 8, 04:15 UTC1h 30m
2026-07-07 SWA1403 DCA → DAL Jul 7, 23:07 UTCJul 8, 01:50 UTC2h 44m
2026-07-07 SWA1403 DCA → DAL Jul 7, 23:10 UTCJul 8, 01:50 UTC2h 40m
2026-07-07 SWA3908 - Jul 7, 19:25 UTCJul 7, 21:20 UTC1h 55m
2026-07-07 SWA1467 - Jul 7, 14:40 UTCJul 7, 17:20 UTC2h 40m
2026-07-07 SWA1467 PHX → STL Jul 7, 14:40 UTCJul 7, 17:20 UTC2h 40m
2026-07-07 SWA864 - Jul 7, 12:20 UTCJul 7, 13:15 UTC55m
2026-07-07 SWA223 PHX → ONT Jul 7, 06:00 UTCJul 7, 06:45 UTC45m
2026-07-07 SWA1231 COS → PHX Jul 7, 03:10 UTCJul 7, 04:29 UTC1h 19m

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, SWA51, SWA2525, SWA2449.