Apparatus

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sensors Mode-S transponder

AC8009

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N904WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AC8009
Octal
53100011
Decimal
11,304,969
Country
US
Tail
N904WN
Type
B737
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
710
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S AC8009.

Country allocation

The ICAO 24-bit address AC8009 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 2026-05-16
SWA301 Southwest Airlines 6 2026-05-26
SWA300 Southwest Airlines 6 2026-06-13
SWA169 Southwest Airlines 6 2026-04-28
SWA1094 - 6 2026-07-17
SWA3958 Southwest Airlines 5 2026-05-18
SWA2990 - 5 2026-06-29
SWA2409 - 5 2026-04-14
SWA1753 - 5 2026-07-02
SWA1285 Southwest Airlines 5 2026-05-25
SWA715 - 4 2026-06-26
SWA649 Southwest Airlines 4 2026-06-03
SWA427 - 4 2026-07-12
SWA406 - 4 2026-06-19
SWA3846 - 4 2026-07-09
SWA3281 Southwest Airlines 4 2026-05-27
SWA2705 Southwest Airlines 4 2026-04-20
SWA2318 Southwest Airlines 4 2026-06-26
SWA1422 - 4 2026-07-14
SWA1191 - 4 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA319 SAN → SFO Jul 26, 19:25 UTCJul 26, 21:10 UTC1h 45m
2026-07-26 SWA3605 BUR → PHX Jul 26, 17:20 UTCJul 26, 18:05 UTC45m
2026-07-26 SWA1185 DEN → LGA Jul 26, 15:10 UTCJul 26, 16:00 UTC50m
2026-07-26 SWA3545 LAS → SJC Jul 26, 11:35 UTCJul 26, 13:50 UTC2h 15m
2026-07-26 SWA665 PHL → DEN Jul 26, 03:05 UTCJul 26, 04:50 UTC1h 45m
2026-07-26 SWA4425 SAN → SJC Jul 26, 00:05 UTCJul 26, 01:45 UTC1h 40m
2026-07-26 SWA4425 SAN → SJC Jul 26, 00:01 UTCJul 26, 01:40 UTC1h 39m
2026-07-25 SWA116 MCO → MDW Jul 25, 21:20 UTCJul 25, 23:10 UTC1h 50m
2026-07-25 SWA1963 DAL → DEN Jul 25, 18:00 UTCJul 25, 20:15 UTC2h 15m
2026-07-25 SWA1963 DAL → DEN Jul 25, 17:59 UTCJul 25, 20:10 UTC2h 11m
2026-07-25 SWA1963 DAL → DEN Jul 25, 13:40 UTCJul 25, 17:00 UTC3h 20m
2026-07-25 SWA4884 SLC → OAK Jul 25, 03:20 UTCJul 25, 04:05 UTC45m
2026-07-25 SWA3360 LAS → DEN Jul 25, 01:30 UTCJul 25, 02:30 UTC1h 0m
2026-07-25 SWA3360 LAS → DEN Jul 25, 01:27 UTCJul 25, 02:25 UTC58m
2026-07-24 SWA3474 OAK → RNO Jul 24, 23:50 UTCJul 25, 00:50 UTC1h 0m
2026-07-24 SWA1680 RSW → BWI Jul 24, 22:05 UTCJul 24, 23:00 UTC55m
2026-07-24 SWA1680 RSW → BWI Jul 24, 19:00 UTCJul 24, 20:25 UTC1h 25m
2026-07-24 SWA247 PVD → MDW Jul 24, 16:35 UTCJul 24, 18:00 UTC1h 25m
2026-07-24 SWA247 PVD → MDW Jul 24, 16:32 UTCJul 24, 17:54 UTC1h 23m
2026-07-24 SWA4750 - Jul 24, 13:30 UTCJul 24, 14:20 UTC50m
2026-07-24 SWA2477 ATL → JAN Jul 24, 04:35 UTCJul 24, 05:20 UTC45m
2026-07-24 SWA2477 ATL → JAN Jul 24, 02:25 UTCJul 24, 03:15 UTC50m
2026-07-24 SWA3713 ALB → TPA Jul 24, 00:30 UTCJul 24, 01:30 UTC1h 0m
2026-07-23 SWA3863 ISP → TPA Jul 23, 22:00 UTCJul 23, 22:55 UTC55m
2026-07-23 SWA3863 ISP → TPA Jul 23, 21:57 UTCJul 23, 22:50 UTC53m
2026-07-23 SWA397 SJC → LAS Jul 23, 20:15 UTCJul 23, 21:15 UTC1h 0m
2026-07-23 SWA397 SJC → LAS Jul 23, 20:13 UTCJul 23, 21:11 UTC58m
2026-07-23 SWA2432 SJC → SNA Jul 23, 18:20 UTCJul 23, 19:05 UTC45m
2026-07-23 SWA4903 LGA → MDW Jul 23, 16:30 UTCJul 23, 17:25 UTC55m
2026-07-23 SWA4935 - Jul 23, 14:15 UTCJul 23, 15:15 UTC1h 0m
2026-07-23 SWA4935 SNA → OAK Jul 23, 14:10 UTCJul 23, 15:06 UTC56m
2026-07-23 SWA1590 LGB → OAK Jul 23, 04:50 UTCJul 23, 05:30 UTC40m
2026-07-23 SWA1590 LGB → OAK Jul 23, 04:48 UTCJul 23, 05:26 UTC38m
2026-07-23 SWA4160 MDW → CHS Jul 23, 03:05 UTCJul 23, 04:00 UTC55m
2026-07-23 SWA4160 MDW → CHS Jul 23, 00:40 UTCJul 23, 01:55 UTC1h 15m
2026-07-22 SWA9002 MDW → CVG Jul 22, 20:40 UTCJul 22, 22:35 UTC1h 55m
2026-07-22 SWA9002 MDW → CVG Jul 22, 20:36 UTCJul 22, 22:35 UTC1h 59m
2026-07-22 SWA9002 MDW → CVG Jul 22, 18:00 UTCJul 22, 19:35 UTC1h 35m
2026-07-21 SWA8701 - Jul 21, 20:25 UTCJul 21, 21:10 UTC45m
2026-07-21 SWA8701 MSY → HOU Jul 21, 20:20 UTCJul 21, 21:09 UTC49m
2026-07-20 SWA4793 DAL → MSY Jul 20, 20:45 UTCJul 20, 21:50 UTC1h 5m
2026-07-20 SWA3595 ONT → LAS Jul 20, 17:45 UTCJul 20, 19:45 UTC2h 0m
2026-07-20 SWA667 BNA → SAV Jul 20, 15:30 UTCJul 20, 16:35 UTC1h 5m
2026-07-20 SWA1528 HOU → VPS Jul 20, 12:25 UTCJul 20, 13:55 UTC1h 30m
2026-07-20 SWA4085 - Jul 20, 03:30 UTCJul 20, 04:35 UTC1h 5m
2026-07-20 SWA4085 MDW → MSP Jul 20, 03:28 UTCJul 20, 04:35 UTC1h 7m
2026-07-19 SWA3501 - Jul 19, 23:55 UTCJul 20, 02:35 UTC2h 40m
2026-07-19 SWA2559 DCA → FLL Jul 19, 19:50 UTCJul 19, 22:05 UTC2h 15m
2026-07-19 SWA2559 DAL → DCA Jul 19, 15:45 UTCJul 19, 18:25 UTC2h 40m
2026-07-19 SWA1365 - Jul 19, 13:15 UTCJul 19, 14:40 UTC1h 25m

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 N904WN page for operator, model, and routing details .

Mode-S AC8009 frequently asked

What is Mode-S code AC8009?
AC8009 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N904WN.
Where is Mode-S AC8009 registered?
Mode-S code AC8009 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 AC8009 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC8009, octal 53100011, decimal 11,304,969.
What flights does AC8009 operate?
Mode-S AC8009 has broadcast 20 distinct callsigns, including SWA1219, SWA301, SWA300, SWA169, SWA1094.