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sensors Mode-S transponder

AAADB2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7876A · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AAADB2
Octal
52526662
Decimal
11,185,586
Country
US
Tail
N7876A
Type
B737
No current signal · last broadcast 2h ago
Flights observed
469
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AAADB2.

Country allocation

The ICAO 24-bit address AAADB2 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
SWA3366 Southwest Airlines 7 2026-05-03
SWA4264 Southwest Airlines 6 2026-04-17
SWA3399 Southwest Airlines 6 2026-04-18
SWA853 Southwest Airlines 5 2026-05-26
SWA1357 Southwest Airlines 5 2026-04-17
SWA4518 - 4 2026-04-15
SWA3791 Southwest Airlines 4 2026-04-28
SWA345 - 4 2026-07-03
SWA2715 Southwest Airlines 4 2026-05-25
SWA264 Southwest Airlines 4 2026-04-14
SWA2098 Southwest Airlines 4 2026-05-11
SWA1683 Southwest Airlines 4 2026-05-19
SWA1547 Southwest Airlines 4 2026-05-04
SWA762 - 3 2026-07-06
SWA515 - 3 2026-06-24
SWA481 - 3 2026-06-29
SWA4637 Southwest Airlines 3 2026-05-07
SWA426 - 3 2026-07-11
SWA4007 Southwest Airlines 3 2026-05-22
SWA3675 Southwest Airlines 3 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA1900 - Jul 14, 01:20 UTCJul 14, 03:20 UTC2h 0m
2026-07-13 SWA1900 DCA → BNA Jul 13, 21:55 UTCJul 13, 23:20 UTC1h 25m
2026-07-13 SWA2761 - Jul 13, 19:25 UTCJul 13, 20:55 UTC1h 30m
2026-07-13 SWA4345 - Jul 13, 16:55 UTCJul 13, 18:00 UTC1h 5m
2026-07-13 SWA3961 - Jul 13, 13:25 UTCJul 13, 14:30 UTC1h 5m
2026-07-13 SWA3435 RDU → STL Jul 13, 10:40 UTCJul 13, 12:10 UTC1h 30m
2026-07-13 SWA3435 RDU → STL Jul 13, 10:36 UTCJul 13, 12:14 UTC1h 39m
2026-07-13 SWA1307 MCO → RDU Jul 13, 02:25 UTCJul 13, 04:00 UTC1h 35m
2026-07-13 SWA1307 MCO → RDU Jul 13, 02:24 UTCJul 13, 03:46 UTC1h 22m
2026-07-12 SWA117 - Jul 12, 22:40 UTCJul 13, 00:55 UTC2h 15m
2026-07-12 SWA117 DEN → BUF Jul 12, 19:05 UTCJul 12, 21:50 UTC2h 45m
2026-07-12 SWA2708 LAS → DEN Jul 12, 16:05 UTCJul 12, 17:30 UTC1h 25m
2026-07-12 SWA2708 LAS → DEN Jul 12, 16:01 UTCJul 12, 17:28 UTC1h 28m
2026-07-12 SWA2859 - Jul 12, 09:45 UTCJul 12, 13:05 UTC3h 20m
2026-07-12 SWA2859 IND → LAS Jul 12, 09:44 UTCJul 12, 13:01 UTC3h 17m
2026-07-12 SWA4591 - Jul 12, 03:05 UTCJul 12, 05:05 UTC2h 0m
2026-07-11 SWA3950 STL → MCO Jul 11, 23:55 UTCJul 12, 01:55 UTC2h 0m
2026-07-11 SWA426 - Jul 11, 21:55 UTCJul 11, 22:45 UTC50m
2026-07-11 SWA426 - Jul 11, 19:20 UTCJul 11, 20:40 UTC1h 20m
2026-07-11 SWA426 PHX → DAL Jul 11, 15:00 UTCJul 11, 18:15 UTC3h 15m
2026-07-11 SWA4137 - Jul 11, 10:30 UTCJul 11, 13:45 UTC3h 15m
2026-07-11 SWA1989 - Jul 11, 03:01 UTCJul 11, 05:05 UTC2h 5m
2026-07-10 SWA2730 - Jul 10, 23:10 UTCJul 11, 02:00 UTC2h 50m
2026-07-10 SWA4195 DAL → DCA Jul 10, 19:15 UTCJul 10, 21:40 UTC2h 26m
2026-07-10 SWA4195 - Jul 10, 17:00 UTCJul 10, 17:50 UTC50m
2026-07-10 SWA2617 - Jul 10, 15:05 UTCJul 10, 15:45 UTC40m
2026-07-09 SWA1316 - Jul 9, 23:55 UTCJul 10, 00:45 UTC50m
2026-07-09 SWA1316 - Jul 9, 21:25 UTCJul 9, 23:05 UTC1h 40m
2026-07-09 SWA1316 - Jul 9, 20:05 UTCJul 9, 20:10 UTC5m
2026-07-09 SWA3495 - Jul 9, 18:00 UTCJul 9, 20:10 UTC2h 10m
2026-07-09 SWA3495 SAN → DEN Jul 9, 17:58 UTCJul 9, 19:50 UTC1h 52m
2026-07-09 SWA4261 - Jul 9, 15:45 UTCJul 9, 16:55 UTC1h 10m
2026-07-09 SWA383 - Jul 9, 13:35 UTCJul 9, 14:25 UTC50m
2026-07-09 SWA383 ONT → SJC Jul 9, 13:33 UTCJul 9, 14:24 UTC51m
2026-07-09 SWA4984 - Jul 9, 03:25 UTCJul 9, 04:20 UTC55m
2026-07-09 SWA1322 LAS → SMF Jul 9, 01:40 UTCJul 9, 02:45 UTC1h 5m
2026-07-08 SWA873 - Jul 8, 23:40 UTCJul 9, 00:20 UTC40m
2026-07-08 SWA2375 AUS → ONT Jul 8, 20:05 UTCJul 8, 22:35 UTC2h 30m
2026-07-08 SWA2375 AUS → ONT Jul 8, 20:05 UTCJul 8, 22:30 UTC2h 25m
2026-07-08 SWA2109 - Jul 8, 16:30 UTCJul 8, 18:30 UTC2h 0m
2026-07-08 SWA4531 DAL → IND Jul 8, 13:30 UTCJul 8, 15:15 UTC1h 45m
2026-07-08 SWA1636 - Jul 8, 11:10 UTCJul 8, 11:55 UTC45m
2026-07-08 SWA2040 - Jul 8, 01:25 UTCJul 8, 02:15 UTC50m
2026-07-07 SWA2040 - Jul 7, 23:40 UTCJul 8, 00:10 UTC30m
2026-07-07 SWA4301 - Jul 7, 21:40 UTCJul 7, 22:30 UTC50m
2026-07-07 SWA4301 - Jul 7, 17:55 UTCJul 7, 20:20 UTC2h 25m
2026-07-07 SWA1635 STL → LAS Jul 7, 13:50 UTCJul 7, 16:40 UTC2h 50m
2026-07-07 SWA682 BNA → STL Jul 7, 03:00 UTCJul 7, 03:45 UTC45m
2026-07-07 SWA1283 DAL → BNA Jul 7, 00:45 UTCJul 7, 02:10 UTC1h 25m
2026-07-07 SWA1283 DAL → BNA Jul 7, 00:41 UTCJul 7, 02:05 UTC1h 24m

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 N7876A page for operator, model, and routing details .

Mode-S AAADB2 frequently asked

What is Mode-S code AAADB2?
AAADB2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7876A.
Where is Mode-S AAADB2 registered?
Mode-S code AAADB2 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 AAADB2 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAADB2, octal 52526662, decimal 11,185,586.
What flights does AAADB2 operate?
Mode-S AAADB2 has broadcast 20 distinct callsigns, including SWA3366, SWA4264, SWA3399, SWA853, SWA1357.