Apparatus

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sensors Mode-S transponder

AA9B20

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N7826B · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AA9B20
Octal
52515440
Decimal
11,180,832
Country
US
Tail
N7826B
Type
B737
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
728
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S AA9B20.

Country allocation

The ICAO 24-bit address AA9B20 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
SWA328 Southwest Airlines 5 2026-07-10
SWA1450 - 5 2026-06-24
SWA4767 - 4 2026-07-14
SWA4004 - 4 2026-07-08
SWA3706 Southwest Airlines 4 2026-05-18
SWA3563 - 4 2026-07-16
SWA3400 - 4 2026-04-13
SWA318 - 4 2026-07-10
SWA3070 - 4 2026-04-16
SWA246 Southwest Airlines 4 2026-07-26
SWA2298 - 4 2026-07-21
SWA1769 Southwest Airlines 4 2026-05-06
SWA1418 Southwest Airlines 4 2026-05-05
SWA1396 - 4 2026-07-02
SWA1382 - 4 2026-07-06
SWA1269 Southwest Airlines 4 2026-05-08
SWA1147 - 4 2026-06-21
SWA971 Southwest Airlines 3 2026-05-14
SWA799 - 3 2026-06-29
SWA700 Southwest Airlines 3 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA257 RNO → LAS Jul 26, 20:20 UTCJul 26, 21:15 UTC55m
2026-07-26 SWA3795 BNA → MKE Jul 26, 18:15 UTCJul 26, 19:20 UTC1h 5m
2026-07-26 SWA246 SJC → HNL Jul 26, 16:20 UTCJul 26, 17:20 UTC1h 0m
2026-07-26 SWA246 SJC → HNL Jul 26, 16:19 UTCJul 26, 17:16 UTC57m
2026-07-26 SWA246 SJC → HNL Jul 26, 14:55 UTCJul 26, 15:35 UTC40m
2026-07-26 SWA246 SJC → HNL Jul 26, 12:20 UTCJul 26, 13:30 UTC1h 10m
2026-07-26 SWA1468 LGA → ATL Jul 26, 03:15 UTCJul 26, 04:00 UTC45m
2026-07-26 SWA1468 LGA → ATL Jul 26, 03:11 UTCJul 26, 04:00 UTC49m
2026-07-25 SWA1743 BWI → MHT Jul 25, 23:45 UTCJul 26, 02:00 UTC2h 15m
2026-07-25 SWA1027 CUN → MSY Jul 25, 19:25 UTCJul 25, 20:55 UTC1h 30m
2026-07-25 SWA1027 CUN → MSY Jul 25, 19:24 UTCJul 25, 20:49 UTC1h 25m
2026-07-25 SWA305 HOU → CUN Jul 25, 16:25 UTCJul 25, 18:10 UTC1h 45m
2026-07-25 SWA3589 - Jul 25, 12:35 UTCJul 25, 14:25 UTC1h 50m
2026-07-25 SWA3374 IAD → DEN Jul 25, 09:25 UTCJul 25, 11:05 UTC1h 40m
2026-07-25 SWA1416 CVG → BWI Jul 25, 01:20 UTCJul 25, 03:30 UTC2h 10m
2026-07-24 SWA1416 CVG → BWI Jul 24, 21:30 UTCJul 24, 23:35 UTC2h 5m
2026-07-24 SWA2116 LAX → OAK Jul 24, 18:30 UTCJul 24, 20:10 UTC1h 40m
2026-07-24 SWA2116 LAX → OAK Jul 24, 16:10 UTCJul 24, 17:30 UTC1h 20m
2026-07-24 SWA2116 LAX → OAK Jul 24, 12:55 UTCJul 24, 15:10 UTC2h 15m
2026-07-24 SWA3998 PHX → DEN Jul 24, 09:55 UTCJul 24, 11:50 UTC1h 55m
2026-07-24 SWA1417 ABQ → OAK Jul 24, 00:55 UTCJul 24, 03:00 UTC2h 5m
2026-07-23 SWA1417 ABQ → OAK Jul 23, 22:40 UTCJul 24, 00:05 UTC1h 25m
2026-07-23 SWA1996 CUN → STL Jul 23, 17:50 UTCJul 23, 20:40 UTC2h 50m
2026-07-23 SWA1985 STL → CUN Jul 23, 13:50 UTCJul 23, 16:25 UTC2h 35m
2026-07-23 SWA1985 STL → CUN Jul 23, 13:55 UTCJul 23, 16:00 UTC2h 5m
2026-07-23 SWA4048 MKE → PHX Jul 23, 10:00 UTCJul 23, 12:00 UTC2h 0m
2026-07-23 SWA417 OAK → SAN Jul 23, 03:30 UTCJul 23, 05:30 UTC2h 0m
2026-07-23 SWA417 OAK → SAN Jul 23, 03:26 UTCJul 23, 05:25 UTC1h 59m
2026-07-23 SWA417 OAK → SAN Jul 23, 00:05 UTCJul 23, 02:35 UTC2h 30m
2026-07-22 SWA790 DEN → SJC Jul 22, 22:25 UTCJul 22, 23:20 UTC55m
2026-07-22 SWA790 DEN → SJC Jul 22, 22:22 UTCJul 22, 23:12 UTC50m
2026-07-22 SWA2203 STL → TPA Jul 22, 20:50 UTCJul 22, 21:30 UTC40m
2026-07-22 SWA2203 STL → TPA Jul 22, 20:45 UTCJul 22, 21:26 UTC41m
2026-07-22 SWA380 - Jul 22, 18:20 UTCJul 22, 19:50 UTC1h 30m
2026-07-22 SWA380 AMA → LAS Jul 22, 18:09 UTCJul 22, 19:46 UTC1h 37m
2026-07-22 SWA380 - Jul 22, 16:20 UTCJul 22, 17:00 UTC40m
2026-07-22 SWA200 BUR → OAK Jul 22, 04:25 UTCJul 22, 13:15 UTC8h 50m
2026-07-22 SWA820 PWM → BWI Jul 22, 02:30 UTCJul 22, 03:35 UTC1h 5m
2026-07-22 SWA3663 PHL → STL Jul 22, 00:30 UTCJul 22, 01:15 UTC45m
2026-07-21 SWA4883 BUR → SJC Jul 21, 22:45 UTCJul 21, 23:35 UTC50m
2026-07-21 SWA4883 BUR → SJC Jul 21, 22:44 UTCJul 21, 23:31 UTC47m
2026-07-21 SWA4931 FLL → MDW Jul 21, 20:55 UTCJul 21, 21:45 UTC50m
2026-07-21 SWA4931 FLL → MDW Jul 21, 20:53 UTCJul 21, 21:41 UTC48m
2026-07-21 SWA2298 - Jul 21, 19:20 UTCJul 21, 20:10 UTC50m
2026-07-21 SWA2298 - Jul 21, 18:05 UTCJul 21, 18:40 UTC35m
2026-07-21 SWA4933 HOU → SAN Jul 21, 16:05 UTCJul 21, 16:50 UTC45m
2026-07-21 SWA4933 HOU → SAN Jul 21, 16:01 UTCJul 21, 16:43 UTC43m
2026-07-21 SWA4933 HOU → SAN Jul 21, 13:55 UTCJul 21, 14:55 UTC1h 0m
2026-07-21 SWA2435 PHX → SMF Jul 21, 03:20 UTCJul 21, 04:05 UTC45m
2026-07-21 SWA3645 LGB → OAK Jul 21, 01:15 UTCJul 21, 02:10 UTC55m

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 N7826B page for operator, model, and routing details .

Mode-S AA9B20 frequently asked

What is Mode-S code AA9B20?
AA9B20 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N7826B.
Where is Mode-S AA9B20 registered?
Mode-S code AA9B20 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 AA9B20 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9B20, octal 52515440, decimal 11,180,832.
What flights does AA9B20 operate?
Mode-S AA9B20 has broadcast 20 distinct callsigns, including SWA328, SWA1450, SWA4767, SWA4004, SWA3706.