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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 Jul 26, 21:30 UTC
Flights observed
739
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

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
SWA324 - 6 2026-07-19
SWA120 Southwest Airlines 6 2026-06-06
SWA684 - 5 2026-06-26
SWA4355 Southwest Airlines 5 2026-07-24
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
SWA3151 Southwest Airlines 4 2026-07-19
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
SWA1528 - 4 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA9002 MDW → CVG Jul 26, 19:55 UTCJul 26, 20:55 UTC1h 0m
2026-07-26 SWA9002 MDW → CVG Jul 26, 16:20 UTCJul 26, 17:05 UTC45m
2026-07-26 SWA2173 SJC → SEA Jul 26, 01:15 UTCJul 26, 03:45 UTC2h 30m
2026-07-25 SWA2173 SJC → SEA Jul 25, 20:10 UTCJul 26, 00:10 UTC4h 0m
2026-07-25 SWA1924 - Jul 25, 14:40 UTCJul 25, 18:50 UTC4h 10m
2026-07-25 SWA1894 BDL → BNA Jul 25, 10:35 UTCJul 25, 11:10 UTC35m
2026-07-25 SWA1894 BDL → BNA Jul 25, 10:34 UTCJul 25, 11:12 UTC38m
2026-07-25 SWA4113 LAS → SJC Jul 25, 02:35 UTCJul 25, 03:05 UTC30m
2026-07-24 SWA4355 BUR → OAK Jul 24, 23:30 UTCJul 25, 01:20 UTC1h 50m
2026-07-24 SWA4355 BUR → OAK Jul 24, 23:28 UTCJul 25, 01:15 UTC1h 47m
2026-07-24 SWA4355 BUR → OAK Jul 24, 21:45 UTCJul 24, 22:35 UTC50m
2026-07-24 SWA4355 BUR → OAK Jul 24, 18:40 UTCJul 24, 20:50 UTC2h 10m
2026-07-24 SWA4355 BUR → OAK Jul 24, 15:20 UTCJul 24, 17:30 UTC2h 10m
2026-07-23 SWA2524 PSP → DEN Jul 23, 15:00 UTCJul 23, 16:05 UTC1h 5m
2026-07-23 SWA801 BOS → BWI Jul 23, 12:50 UTCJul 23, 13:35 UTC45m
2026-07-23 SWA801 BOS → BWI Jul 23, 12:46 UTCJul 23, 13:30 UTC44m
2026-07-23 SWA962 TPA → BDL Jul 23, 00:05 UTCJul 23, 01:50 UTC1h 45m
2026-07-22 SWA2390 - Jul 22, 21:40 UTCJul 22, 23:05 UTC1h 25m
2026-07-22 SWA2390 BWI → IND Jul 22, 21:38 UTCJul 22, 23:02 UTC1h 24m
2026-07-22 SWA2994 - Jul 22, 19:15 UTCJul 22, 20:30 UTC1h 15m
2026-07-22 SWA2994 BNA → BWI Jul 22, 19:10 UTCJul 22, 20:28 UTC1h 19m
2026-07-22 SWA4535 - Jul 22, 17:00 UTCJul 22, 17:50 UTC50m
2026-07-22 SWA4622 - Jul 22, 15:20 UTCJul 22, 15:55 UTC35m
2026-07-22 SWA874 - Jul 22, 12:20 UTCJul 22, 14:05 UTC1h 45m
2026-07-22 SWA1946 OGG → OAK Jul 22, 01:55 UTCJul 22, 03:20 UTC1h 25m
2026-07-21 SWA556 HOU → SJC Jul 21, 21:10 UTCJul 21, 22:40 UTC1h 30m
2026-07-21 SWA733 ATL → CLE Jul 21, 17:10 UTCJul 21, 18:25 UTC1h 15m
2026-07-21 SWA733 ATL → CLE Jul 21, 17:09 UTCJul 21, 18:28 UTC1h 19m
2026-07-21 SWA733 ATL → CLE Jul 21, 14:35 UTCJul 21, 16:20 UTC1h 45m
2026-07-21 SWA1110 LAS → SNA Jul 21, 12:00 UTCJul 21, 13:25 UTC1h 25m
2026-07-21 SWA4375 BWI → SAV Jul 21, 00:30 UTCJul 21, 01:45 UTC1h 15m
2026-07-20 SWA2145 BUR → LAS Jul 20, 22:15 UTCJul 20, 23:20 UTC1h 5m
2026-07-20 SWA4126 - Jul 20, 20:35 UTCJul 20, 21:20 UTC45m
2026-07-20 SWA4126 - Jul 20, 18:25 UTCJul 20, 19:35 UTC1h 10m
2026-07-20 SWA952 - Jul 20, 16:25 UTCJul 20, 17:20 UTC55m
2026-07-20 SWA3402 DEN → SNA Jul 20, 13:35 UTCJul 20, 14:40 UTC1h 5m
2026-07-20 SWA4821 DEN → MSY Jul 20, 11:25 UTCJul 20, 12:15 UTC50m
2026-07-20 SWA4821 DEN → MSY Jul 20, 11:24 UTCJul 20, 12:17 UTC53m
2026-07-20 SWA3143 - Jul 20, 04:50 UTCJul 20, 09:25 UTC4h 35m
2026-07-20 SWA480 SAN → OAK Jul 20, 02:15 UTCJul 20, 03:15 UTC1h 0m
2026-07-20 SWA480 SAN → OAK Jul 20, 00:10 UTCJul 20, 01:20 UTC1h 10m
2026-07-19 SWA2433 - Jul 19, 21:55 UTCJul 19, 23:15 UTC1h 20m
2026-07-19 SWA2433 - Jul 19, 20:15 UTCJul 19, 21:00 UTC45m
2026-07-19 SWA3151 MHT → MCO Jul 19, 18:15 UTCJul 19, 19:05 UTC50m
2026-07-19 SWA4509 SAN → SJC Jul 19, 16:25 UTCJul 19, 17:25 UTC1h 0m
2026-07-19 SWA4509 - Jul 19, 10:40 UTCJul 19, 15:20 UTC4h 40m
2026-07-19 SWA324 - Jul 19, 03:55 UTCJul 19, 05:50 UTC1h 55m
2026-07-19 SWA324 FLL → BWI Jul 19, 03:52 UTCJul 19, 05:52 UTC2h 1m
2026-07-19 SWA4735 - Jul 19, 00:45 UTCJul 19, 03:00 UTC2h 15m
2026-07-18 SWA2302 BZE → BWI Jul 18, 18:19 UTCJul 18, 22:06 UTC3h 48m

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 Jul 26, 21:30 UTC.
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, SWA324, SWA120, SWA684.