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sensors Mode-S transponder

AA9AB6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7823A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AA9AB6
Octal
52515266
Decimal
11,180,726
Country
US
Tail
N7823A
Type
B737
No current signal · last broadcast 1h ago
Flights observed
655
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AA9AB6.

Country allocation

The ICAO 24-bit address AA9AB6 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
SWA1219 Southwest Airlines 7 2026-05-19
SWA9003 Southwest Airlines 6 2026-06-11
SWA120 Southwest Airlines 6 2026-06-06
SWA684 - 5 2026-06-26
SWA312 - 5 2026-07-11
SWA2219 - 5 2026-07-12
SWA2099 Southwest Airlines 5 2026-05-20
SWA519 - 4 2026-06-23
SWA4389 Southwest Airlines 4 2026-06-12
SWA4128 Southwest Airlines 4 2026-05-26
SWA3583 - 4 2026-06-20
SWA324 - 4 2026-07-04
SWA279 - 4 2026-07-06
SWA2451 Southwest Airlines 4 2026-06-04
SWA215 - 4 2026-07-09
SWA19 Southwest Airlines 4 2026-05-11
SWA1654 - 4 2026-04-20
SWA1418 Southwest Airlines 4 2026-05-16
SWA921 Southwest Airlines 3 2026-06-12
SWA9005 Southwest Airlines 3 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA4424 - Jul 14, 01:15 UTCJul 14, 01:30 UTC15m
2026-07-13 SWA336 - Jul 13, 21:25 UTCJul 13, 23:50 UTC2h 25m
2026-07-13 SWA2901 STL → MIA Jul 13, 18:00 UTCJul 13, 20:30 UTC2h 30m
2026-07-13 SWA2901 STL → MIA Jul 13, 17:59 UTCJul 13, 20:26 UTC2h 27m
2026-07-13 SWA2901 - Jul 13, 16:15 UTCJul 13, 16:55 UTC40m
2026-07-13 SWA8506 DEN → MDW Jul 13, 13:20 UTCJul 13, 15:20 UTC2h 0m
2026-07-13 SWA2076 - Jul 13, 00:35 UTCJul 13, 01:45 UTC1h 10m
2026-07-13 SWA2076 ICT → DEN Jul 13, 00:35 UTCJul 13, 01:40 UTC1h 6m
2026-07-12 SWA2219 - Jul 12, 21:25 UTCJul 12, 23:25 UTC2h 0m
2026-07-12 SWA674 GEG → LAS Jul 12, 12:25 UTCJul 12, 14:20 UTC1h 55m
2026-07-12 SWA674 GEG → LAS Jul 12, 12:21 UTCJul 12, 14:18 UTC1h 57m
2026-07-12 SWA4768 PHX → GEG Jul 12, 04:15 UTCJul 12, 06:15 UTC2h 0m
2026-07-12 SWA4768 PHX → GEG Jul 12, 04:12 UTCJul 12, 06:14 UTC2h 2m
2026-07-12 SWA199 - Jul 12, 01:20 UTCJul 12, 03:01 UTC1h 40m
2026-07-12 SWA199 MKE → MCO Jul 12, 01:16 UTCJul 12, 03:00 UTC1h 44m
2026-07-11 SWA3155 - Jul 11, 23:25 UTCJul 12, 00:15 UTC50m
2026-07-11 SWA312 SMF → ONT Jul 11, 21:15 UTCJul 11, 22:20 UTC1h 5m
2026-07-11 SWA312 SMF → ONT Jul 11, 21:16 UTCJul 11, 22:17 UTC1h 1m
2026-07-11 SWA781 - Jul 11, 18:40 UTCJul 11, 20:10 UTC1h 30m
2026-07-11 SWA781 - Jul 11, 14:20 UTCJul 11, 17:20 UTC3h 0m
2026-07-11 SWA781 - Jul 11, 11:40 UTCJul 11, 13:15 UTC1h 35m
2026-07-11 SWA2875 - Jul 11, 02:15 UTCJul 11, 03:40 UTC1h 25m
2026-07-10 SWA2693 - Jul 10, 23:55 UTCJul 11, 01:20 UTC1h 25m
2026-07-10 SWA2693 - Jul 10, 20:35 UTCJul 10, 22:55 UTC2h 20m
2026-07-10 SWA2051 MSY → MCO Jul 10, 17:55 UTCJul 10, 19:20 UTC1h 25m
2026-07-10 SWA2051 - Jul 10, 16:15 UTCJul 10, 17:00 UTC45m
2026-07-10 SWA2051 - Jul 10, 12:20 UTCJul 10, 15:05 UTC2h 45m
2026-07-10 SWA369 OAK → LAS Jul 10, 05:15 UTCJul 10, 06:15 UTC1h 0m
2026-07-10 SWA808 BUR → OAK Jul 10, 03:25 UTCJul 10, 04:10 UTC45m
2026-07-10 SWA808 BUR → OAK Jul 10, 03:21 UTCJul 10, 04:10 UTC49m
2026-07-10 SWA3360 SMF → BUR Jul 10, 01:50 UTCJul 10, 02:45 UTC55m
2026-07-09 SWA406 AUS → SMF Jul 9, 21:50 UTCJul 10, 01:00 UTC3h 10m
2026-07-09 SWA399 MCO → AUS Jul 9, 18:20 UTCJul 9, 20:40 UTC2h 20m
2026-07-09 SWA215 ATL → MCO Jul 9, 15:45 UTCJul 9, 16:45 UTC1h 0m
2026-07-09 SWA215 ATL → MCO Jul 9, 15:45 UTCJul 9, 16:45 UTC1h 0m
2026-07-09 SWA4987 TPA → ATL Jul 9, 13:55 UTCJul 9, 14:55 UTC1h 0m
2026-07-09 SWA4796 - Jul 9, 10:25 UTCJul 9, 11:30 UTC1h 5m
2026-07-09 SWA4796 MCI → TPA Jul 9, 10:24 UTCJul 9, 12:56 UTC2h 32m
2026-07-09 SWA1937 - Jul 9, 02:00 UTCJul 9, 03:10 UTC1h 10m
2026-07-09 SWA1937 DAL → MCI Jul 9, 01:59 UTCJul 9, 03:09 UTC1h 10m
2026-07-08 SWA2873 - Jul 8, 23:25 UTCJul 9, 00:50 UTC1h 25m
2026-07-08 SWA464 STL → PNS Jul 8, 21:05 UTCJul 8, 22:30 UTC1h 25m
2026-07-08 SWA1412 DAL → STL Jul 8, 18:30 UTCJul 8, 19:50 UTC1h 20m
2026-07-08 SWA3825 - Jul 8, 16:15 UTCJul 8, 17:35 UTC1h 20m
2026-07-08 SWA3825 - Jul 8, 14:15 UTCJul 8, 15:20 UTC1h 5m
2026-07-08 SWA411 AUS → TPA Jul 8, 11:10 UTCJul 8, 13:15 UTC2h 5m
2026-07-08 SWA1558 PHX → AUS Jul 8, 02:25 UTCJul 8, 04:15 UTC1h 50m
2026-07-08 SWA1558 PHX → AUS Jul 8, 02:22 UTCJul 8, 04:13 UTC1h 51m
2026-07-08 SWA819 BUR → PHX Jul 8, 00:00 UTCJul 8, 01:10 UTC1h 10m
2026-07-07 SWA819 BUR → PHX Jul 7, 23:57 UTCJul 8, 01:02 UTC1h 5m

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 N7823A page for operator, model, and routing details .

Mode-S AA9AB6 frequently asked

What is Mode-S code AA9AB6?
AA9AB6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7823A.
Where is Mode-S AA9AB6 registered?
Mode-S code AA9AB6 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 AA9AB6 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9AB6, octal 52515266, decimal 11,180,726.
What flights does AA9AB6 operate?
Mode-S AA9AB6 has broadcast 20 distinct callsigns, including SWA1219, SWA9003, SWA120, SWA684, SWA312.