Apparatus

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sensors Mode-S transponder

AA76A8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7731A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AA76A8
Octal
52473250
Decimal
11,171,496
Country
US
Tail
N7731A
Type
B737
No current signal · last broadcast 1h ago
Flights observed
670
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S AA76A8.

Country allocation

The ICAO 24-bit address AA76A8 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
SWA169 Southwest Airlines 9 2026-04-17
SWA1026 Southwest Airlines 9 2026-06-18
SWA3719 Southwest Airlines 6 2026-05-02
SWA311 - 5 2026-06-29
SWA3102 Southwest Airlines 5 2026-05-22
SWA1795 - 5 2026-06-23
SWA915 Southwest Airlines 4 2026-05-19
SWA715 Southwest Airlines 4 2026-05-23
SWA4639 - 4 2026-07-04
SWA462 Southwest Airlines 4 2026-05-23
SWA3877 Southwest Airlines 4 2026-06-09
SWA37 Southwest Airlines 4 2026-06-14
SWA3601 - 4 2026-07-11
SWA3017 Southwest Airlines 4 2026-06-13
SWA295 - 4 2026-04-14
SWA294 - 4 2026-06-30
SWA2414 - 4 2026-07-14
SWA2242 Southwest Airlines 4 2026-04-16
SWA2092 Southwest Airlines 4 2026-06-04
SWA2087 Southwest Airlines 4 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA3762 - Jul 14, 08:05 UTCJul 14, 09:00 UTC55m
2026-07-14 SWA3551 SAN → SMF Jul 14, 04:45 UTCJul 14, 05:55 UTC1h 10m
2026-07-14 SWA3551 - Jul 14, 02:55 UTCJul 14, 03:50 UTC55m
2026-07-14 SWA2414 LAS → TUS Jul 14, 00:45 UTCJul 14, 01:50 UTC1h 5m
2026-07-14 SWA2414 LAS → TUS Jul 14, 00:44 UTCJul 14, 01:46 UTC1h 2m
2026-07-13 SWA2414 - Jul 13, 22:20 UTCJul 13, 23:05 UTC45m
2026-07-13 SWA2414 SMF → LGB Jul 13, 20:20 UTCJul 13, 21:30 UTC1h 10m
2026-07-13 SWA1740 DEN → SMF Jul 13, 16:35 UTCJul 13, 18:35 UTC2h 0m
2026-07-13 SWA1740 DEN → SMF Jul 13, 16:34 UTCJul 13, 18:32 UTC1h 58m
2026-07-13 SWA1828 EUG → DEN Jul 13, 13:20 UTCJul 13, 15:25 UTC2h 5m
2026-07-13 SWA636 - Jul 13, 05:40 UTCJul 13, 06:30 UTC50m
2026-07-13 SWA636 SMF → EUG Jul 13, 05:36 UTCJul 13, 06:27 UTC51m
2026-07-13 SWA2366 - Jul 13, 03:45 UTCJul 13, 04:45 UTC1h 0m
2026-07-13 SWA2366 - Jul 13, 02:05 UTCJul 13, 02:50 UTC45m
2026-07-12 SWA1492 - Jul 12, 23:35 UTCJul 13, 00:01 UTC25m
2026-07-12 SWA1492 LGB → LAS Jul 12, 23:31 UTCJul 13, 00:10 UTC39m
2026-07-12 SWA4676 - Jul 12, 22:05 UTCJul 12, 22:45 UTC40m
2026-07-12 SWA4676 - Jul 12, 20:05 UTCJul 12, 20:55 UTC50m
2026-07-12 SWA4781 - Jul 12, 17:45 UTCJul 12, 18:55 UTC1h 10m
2026-07-12 SWA2463 - Jul 12, 14:50 UTCJul 12, 16:30 UTC1h 40m
2026-07-12 SWA2463 BOI → PHX Jul 12, 14:49 UTCJul 12, 16:32 UTC1h 43m
2026-07-12 SWA3762 - Jul 12, 03:30 UTCJul 12, 04:30 UTC1h 0m
2026-07-12 SWA853 BUR → SMF Jul 12, 01:25 UTCJul 12, 02:20 UTC55m
2026-07-12 SWA853 BUR → SMF Jul 12, 01:25 UTCJul 12, 02:18 UTC53m
2026-07-11 SWA3663 - Jul 11, 23:30 UTCJul 12, 00:20 UTC50m
2026-07-11 SWA2260 - Jul 11, 21:50 UTCJul 11, 22:35 UTC45m
2026-07-11 SWA2260 LAS → LGB Jul 11, 20:05 UTCJul 11, 20:50 UTC45m
2026-07-11 SWA3601 - Jul 11, 18:05 UTCJul 11, 18:55 UTC50m
2026-07-11 SWA3601 SBA → LAS Jul 11, 18:00 UTCJul 11, 18:46 UTC46m
2026-07-11 SWA3601 - Jul 11, 16:00 UTCJul 11, 16:50 UTC50m
2026-07-11 SWA3601 - Jul 11, 13:55 UTCJul 11, 15:05 UTC1h 10m
2026-07-11 SWA644 SAN → BOI Jul 11, 04:16 UTCJul 11, 05:51 UTC1h 35m
2026-07-11 SWA644 - Jul 11, 04:15 UTCJul 11, 05:55 UTC1h 40m
2026-07-11 SWA3077 - Jul 11, 01:45 UTCJul 11, 02:55 UTC1h 10m
2026-07-10 SWA4842 - Jul 10, 23:45 UTCJul 11, 00:50 UTC1h 5m
2026-07-10 SWA1887 GEG → SAN Jul 10, 20:15 UTCJul 10, 22:35 UTC2h 20m
2026-07-10 SWA1887 GEG → SAN Jul 10, 20:13 UTCJul 10, 22:35 UTC2h 22m
2026-07-10 SWA2491 PHX → GEG Jul 10, 17:05 UTCJul 10, 19:15 UTC2h 10m
2026-07-10 SWA2491 LGB → PHX Jul 10, 15:05 UTCJul 10, 16:05 UTC1h 0m
2026-07-10 SWA2031 LAS → LGB Jul 10, 03:25 UTCJul 10, 04:10 UTC45m
2026-07-10 SWA2485 LAX → OAK Jul 10, 01:36 UTCJul 10, 02:18 UTC43m
2026-07-10 SWA2485 LAX → OAK Jul 10, 01:40 UTCJul 10, 02:25 UTC45m
2026-07-09 SWA2485 LAX → OAK Jul 9, 23:25 UTCJul 10, 00:30 UTC1h 5m
2026-07-09 SWA3870 - Jul 9, 21:15 UTCJul 9, 22:25 UTC1h 10m
2026-07-09 SWA3870 SNA → SMF Jul 9, 21:15 UTCJul 9, 22:22 UTC1h 7m
2026-07-09 SWA3710 - Jul 9, 19:15 UTCJul 9, 20:10 UTC55m
2026-07-09 SWA439 LAS → SJC Jul 9, 17:10 UTCJul 9, 18:15 UTC1h 5m
2026-07-09 SWA439 - Jul 9, 12:40 UTCJul 9, 16:00 UTC3h 20m
2026-07-09 SWA4829 - Jul 9, 00:55 UTCJul 9, 02:05 UTC1h 10m
2026-07-08 SWA1383 - Jul 8, 21:45 UTCJul 8, 22:00 UTC15m

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 N7731A page for operator, model, and routing details .

Mode-S AA76A8 frequently asked

What is Mode-S code AA76A8?
AA76A8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7731A.
Where is Mode-S AA76A8 registered?
Mode-S code AA76A8 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 AA76A8 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 AA76A8, octal 52473250, decimal 11,171,496.
What flights does AA76A8 operate?
Mode-S AA76A8 has broadcast 20 distinct callsigns, including SWA169, SWA1026, SWA3719, SWA311, SWA3102.