Apparatus

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sensors Mode-S transponder

AC929C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N909WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AC929C
Octal
53111234
Decimal
11,309,724
Country
US
Tail
N909WN
Type
B737
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
737
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S AC929C.

Country allocation

The ICAO 24-bit address AC929C 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
SWA1095 - 6 2026-04-13
SWA3463 Southwest Airlines 5 2026-05-04
SWA3271 Southwest Airlines 5 2026-05-15
SWA2718 Southwest Airlines 5 2026-05-15
SWA267 Southwest Airlines 5 2026-05-13
SWA2540 Southwest Airlines 5 2026-05-16
SWA2222 - 5 2026-07-14
SWA851 Southwest Airlines 4 2026-06-07
SWA670 - 4 2026-07-09
SWA3403 - 4 2026-07-15
SWA30 Southwest Airlines 4 2026-05-25
SWA2896 Southwest Airlines 4 2026-05-14
SWA2711 Southwest Airlines 4 2026-04-15
SWA2374 Southwest Airlines 4 2026-06-08
SWA1920 Southwest Airlines 4 2026-07-24
SWA1909 Southwest Airlines 4 2026-04-21
SWA1850 - 4 2026-07-11
SWA1793 Southwest Airlines 4 2026-05-22
SWA1755 Southwest Airlines 4 2026-04-17
SWA1009 Southwest Airlines 4 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA655 LAS → OAK Jul 26, 20:45 UTCJul 26, 23:00 UTC2h 15m
2026-07-26 SWA1009 OAK → RNO Jul 26, 18:30 UTCJul 26, 19:35 UTC1h 5m
2026-07-26 SWA1009 OAK → RNO Jul 26, 15:30 UTCJul 26, 17:25 UTC1h 55m
2026-07-26 SWA4242 MDW → STL Jul 26, 12:10 UTCJul 26, 14:25 UTC2h 15m
2026-07-26 SWA4242 MDW → STL Jul 26, 12:07 UTCJul 26, 14:27 UTC2h 20m
2026-07-26 SWA4824 RSW → MDW Jul 26, 10:00 UTCJul 26, 10:35 UTC35m
2026-07-25 SWA2471 BUR → PHX Jul 25, 23:15 UTCJul 26, 01:35 UTC2h 20m
2026-07-25 SWA2471 BUR → PHX Jul 25, 23:11 UTCJul 26, 01:30 UTC2h 19m
2026-07-25 SWA1677 CVG → MCO Jul 25, 18:00 UTCJul 25, 21:35 UTC3h 35m
2026-07-25 SWA1677 CVG → MCO Jul 25, 17:57 UTCJul 25, 21:30 UTC3h 34m
2026-07-25 SWA1677 CVG → MCO Jul 25, 16:10 UTCJul 25, 16:55 UTC45m
2026-07-25 SWA146 - Jul 25, 13:05 UTCJul 25, 13:55 UTC50m
2026-07-25 SWA2177 SAN → OAK Jul 25, 06:30 UTCJul 25, 07:40 UTC1h 10m
2026-07-25 SWA1567 SNA → PHX Jul 25, 04:10 UTCJul 25, 05:40 UTC1h 30m
2026-07-25 SWA4639 TPA → AUS Jul 25, 00:35 UTCJul 25, 02:40 UTC2h 5m
2026-07-24 SWA881 SJD → HOU Jul 24, 20:20 UTCJul 24, 21:35 UTC1h 15m
2026-07-24 SWA1920 PHX → SJD Jul 24, 16:20 UTCJul 24, 17:20 UTC1h 0m
2026-07-24 SWA1920 PHX → SJD Jul 24, 16:19 UTCJul 24, 17:55 UTC1h 36m
2026-07-24 SWA1884 BWI → LAS Jul 24, 12:35 UTCJul 24, 14:55 UTC2h 20m
2026-07-24 SWA2805 ATL → DCA Jul 24, 05:00 UTCJul 24, 06:20 UTC1h 20m
2026-07-24 SWA3550 DAL → BWI Jul 24, 02:55 UTCJul 24, 04:00 UTC1h 5m
2026-07-24 SWA3994 DAL → LAX Jul 24, 00:45 UTCJul 24, 01:55 UTC1h 10m
2026-07-23 SWA2407 - Jul 23, 22:30 UTCJul 23, 23:50 UTC1h 20m
2026-07-23 SWA2407 - Jul 23, 18:10 UTCJul 23, 21:35 UTC3h 25m
2026-07-23 SWA2407 - Jul 23, 15:40 UTCJul 23, 16:55 UTC1h 15m
2026-07-23 SWA594 BWI → BOS Jul 23, 13:25 UTCJul 23, 14:30 UTC1h 5m
2026-07-23 SWA594 BWI → BOS Jul 23, 13:20 UTCJul 23, 14:27 UTC1h 7m
2026-07-23 SWA3604 - Jul 23, 11:35 UTCJul 23, 12:10 UTC35m
2026-07-23 SWA156 SJC → LAS Jul 23, 02:05 UTCJul 23, 03:25 UTC1h 20m
2026-07-22 SWA1144 - Jul 22, 23:25 UTCJul 23, 00:35 UTC1h 10m
2026-07-22 SWA1144 - Jul 22, 21:05 UTCJul 22, 22:35 UTC1h 30m
2026-07-22 SWA4917 CLT → DEN Jul 22, 17:30 UTCJul 22, 20:15 UTC2h 45m
2026-07-22 SWA1405 - Jul 22, 14:45 UTCJul 22, 16:25 UTC1h 40m
2026-07-22 SWA3118 - Jul 22, 11:10 UTCJul 22, 13:20 UTC2h 10m
2026-07-21 SWA4898 BWI → PWM Jul 21, 22:10 UTCJul 22, 00:50 UTC2h 40m
2026-07-21 SWA1339 HOU → SJC Jul 21, 16:45 UTCJul 21, 20:05 UTC3h 20m
2026-07-21 SWA698 - Jul 21, 13:50 UTCJul 21, 15:20 UTC1h 30m
2026-07-21 SWA3762 - Jul 21, 04:55 UTCJul 21, 05:55 UTC1h 0m
2026-07-21 SWA2318 - Jul 21, 02:30 UTCJul 21, 03:30 UTC1h 0m
2026-07-21 SWA2318 - Jul 21, 01:00 UTCJul 21, 01:25 UTC25m
2026-07-20 SWA791 BUR → LAS Jul 20, 23:05 UTCJul 20, 23:45 UTC40m
2026-07-20 SWA4965 MDW → CMH Jul 20, 20:05 UTCJul 20, 21:35 UTC1h 30m
2026-07-20 SWA419 BUR → OAK Jul 20, 17:30 UTCJul 20, 19:10 UTC1h 40m
2026-07-20 SWA419 BUR → OAK Jul 20, 17:29 UTCJul 20, 19:06 UTC1h 37m
2026-07-20 SWA3243 - Jul 20, 15:30 UTCJul 20, 16:30 UTC1h 0m
2026-07-20 SWA2309 ONT → SJC Jul 20, 13:40 UTCJul 20, 14:25 UTC45m
2026-07-20 SWA380 - Jul 20, 06:00 UTCJul 20, 07:00 UTC1h 0m
2026-07-20 SWA380 SJC → LAS Jul 20, 05:56 UTCJul 20, 06:56 UTC1h 1m
2026-07-20 SWA4884 BUR → SJC Jul 20, 04:40 UTCJul 20, 05:25 UTC45m
2026-07-20 SWA3742 SNA → OAK Jul 20, 02:35 UTCJul 20, 03:35 UTC1h 0m

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 N909WN page for operator, model, and routing details .

Mode-S AC929C frequently asked

What is Mode-S code AC929C?
AC929C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N909WN.
Where is Mode-S AC929C registered?
Mode-S code AC929C 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 AC929C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC929C, octal 53111234, decimal 11,309,724.
What flights does AC929C operate?
Mode-S AC929C has broadcast 20 distinct callsigns, including SWA1095, SWA3463, SWA3271, SWA2718, SWA267.