Apparatus

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sensors Mode-S transponder

AD2CE1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N948WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AD2CE1
Octal
53226341
Decimal
11,349,217
Country
US
Tail
N948WN
Type
B737
No current signal · last broadcast 2h ago
Flights observed
664
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S AD2CE1.

Country allocation

The ICAO 24-bit address AD2CE1 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
SWA1680 - 8 2026-06-27
SWA3001 - 7 2026-07-10
SWA1177 Southwest Airlines 7 2026-04-17
SWA3705 - 6 2026-07-11
SWA2725 - 6 2026-04-17
SWA2051 - 6 2026-07-09
SWA2384 - 5 2026-07-13
SWA2288 - 5 2026-04-13
SWA2223 Southwest Airlines 5 2026-05-02
SWA807 Southwest Airlines 4 2026-06-02
SWA726 - 4 2026-06-30
SWA715 Southwest Airlines 4 2026-05-26
SWA3825 Southwest Airlines 4 2026-06-24
SWA3767 - 4 2026-07-10
SWA3626 - 4 2026-07-11
SWA3491 Southwest Airlines 4 2026-05-17
SWA3104 Southwest Airlines 4 2026-05-05
SWA2308 Southwest Airlines 4 2026-05-24
SWA1853 Southwest Airlines 4 2026-05-23
SWA1715 Southwest Airlines 4 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA3515 - Jul 14, 22:40 UTCJul 15, 01:20 UTC2h 39m
2026-07-14 SWA856 - Jul 14, 20:05 UTCJul 14, 21:55 UTC1h 50m
2026-07-14 SWA856 MDW → PVD Jul 14, 20:02 UTCJul 14, 21:54 UTC1h 52m
2026-07-14 SWA1445 DCA → MDW Jul 14, 17:00 UTCJul 14, 18:20 UTC1h 20m
2026-07-14 SWA866 ATL → DCA Jul 14, 13:44 UTCJul 14, 15:05 UTC1h 21m
2026-07-14 SWA866 ATL → DCA Jul 14, 13:45 UTCJul 14, 15:05 UTC1h 20m
2026-07-13 SWA3232 - Jul 13, 21:35 UTCJul 14, 00:55 UTC3h 20m
2026-07-13 SWA3232 RHV → PHX Jul 13, 19:05 UTCJul 13, 20:40 UTC1h 35m
2026-07-13 SWA2384 DEN → SJC Jul 13, 16:00 UTCJul 13, 18:00 UTC2h 0m
2026-07-13 SWA1333 GEG → DEN Jul 13, 13:05 UTCJul 13, 14:55 UTC1h 50m
2026-07-13 SWA4440 DEN → GEG Jul 13, 03:45 UTCJul 13, 05:31 UTC1h 45m
2026-07-13 SWA4024 - Jul 13, 00:35 UTCJul 13, 02:30 UTC1h 55m
2026-07-12 SWA4533 - Jul 12, 22:25 UTCJul 12, 23:35 UTC1h 10m
2026-07-12 SWA1401 - Jul 12, 19:35 UTCJul 12, 21:10 UTC1h 35m
2026-07-12 SWA1401 - Jul 12, 16:55 UTCJul 12, 18:35 UTC1h 40m
2026-07-12 SWA1401 ABQ → MDW Jul 12, 13:25 UTCJul 12, 15:45 UTC2h 20m
2026-07-12 SWA249 AUS → ABQ Jul 12, 01:35 UTCJul 12, 03:05 UTC1h 30m
2026-07-11 SWA2224 PHX → AUS Jul 11, 21:30 UTCJul 11, 23:30 UTC2h 0m
2026-07-11 SWA2224 BUR → PHX Jul 11, 19:25 UTCJul 11, 20:35 UTC1h 10m
2026-07-11 SWA3626 - Jul 11, 17:40 UTCJul 11, 18:30 UTC50m
2026-07-11 SWA3626 SEA → SJC Jul 11, 14:45 UTCJul 11, 16:40 UTC1h 55m
2026-07-11 SWA3705 - Jul 11, 05:35 UTCJul 11, 07:05 UTC1h 30m
2026-07-11 SWA3705 - Jul 11, 03:05 UTCJul 11, 04:01 UTC55m
2026-07-11 SWA4906 - Jul 11, 01:20 UTCJul 11, 02:10 UTC50m
2026-07-11 SWA4906 PHX → SNA Jul 11, 01:18 UTCJul 11, 02:07 UTC49m
2026-07-10 SWA819 BUR → PHX Jul 10, 23:10 UTCJul 11, 00:15 UTC1h 5m
2026-07-10 SWA3767 SMF → BUR Jul 10, 21:00 UTCJul 10, 21:55 UTC55m
2026-07-10 SWA3767 SMF → BUR Jul 10, 21:00 UTCJul 10, 21:55 UTC55m
2026-07-10 SWA3001 - Jul 10, 19:00 UTCJul 10, 20:05 UTC1h 5m
2026-07-10 SWA3001 - Jul 10, 17:05 UTCJul 10, 18:05 UTC1h 0m
2026-07-10 SWA3001 SEA → PHX Jul 10, 13:40 UTCJul 10, 16:00 UTC2h 20m
2026-07-10 SWA4144 - Jul 10, 04:20 UTCJul 10, 08:25 UTC4h 5m
2026-07-10 SWA4144 MDW → SEA Jul 10, 04:17 UTCJul 10, 08:24 UTC4h 8m
2026-07-10 SWA2693 ROC → MDW Jul 10, 00:40 UTCJul 10, 02:10 UTC1h 30m
2026-07-09 SWA2693 - Jul 9, 21:40 UTCJul 9, 23:45 UTC2h 5m
2026-07-09 SWA2051 MSY → MCO Jul 9, 17:45 UTCJul 9, 19:05 UTC1h 20m
2026-07-09 SWA2051 - Jul 9, 16:00 UTCJul 9, 16:40 UTC40m
2026-07-09 SWA2051 - Jul 9, 12:20 UTCJul 9, 15:00 UTC2h 40m
2026-07-09 SWA2439 - Jul 9, 05:10 UTCJul 9, 05:55 UTC45m
2026-07-09 SWA2102 PHX → LAX Jul 9, 03:21 UTCJul 9, 04:16 UTC55m
2026-07-09 SWA2102 - Jul 9, 03:25 UTCJul 9, 04:15 UTC50m
2026-07-08 SWA1006 - Jul 8, 23:45 UTCJul 9, 02:05 UTC2h 20m
2026-07-08 SWA1006 MCI → PHX Jul 8, 23:40 UTCJul 9, 01:58 UTC2h 18m
2026-07-08 SWA1006 - Jul 8, 21:05 UTCJul 8, 22:35 UTC1h 30m
2026-07-08 SWA4154 - Jul 8, 18:35 UTCJul 8, 20:10 UTC1h 35m
2026-07-08 SWA4154 ATL → HOU Jul 8, 18:35 UTCJul 8, 20:13 UTC1h 39m
2026-07-08 SWA4154 - Jul 8, 15:55 UTCJul 8, 17:30 UTC1h 35m
2026-07-08 SWA1781 - Jul 8, 13:25 UTCJul 8, 14:05 UTC40m
2026-07-08 SWA1781 DTW → MDW Jul 8, 13:21 UTCJul 8, 14:05 UTC44m
2026-07-08 SWA4213 STL → DTW Jul 8, 01:40 UTCJul 8, 02:50 UTC1h 10m

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 N948WN page for operator, model, and routing details .

Mode-S AD2CE1 frequently asked

What is Mode-S code AD2CE1?
AD2CE1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N948WN.
Where is Mode-S AD2CE1 registered?
Mode-S code AD2CE1 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 AD2CE1 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 AD2CE1, octal 53226341, decimal 11,349,217.
What flights does AD2CE1 operate?
Mode-S AD2CE1 has broadcast 20 distinct callsigns, including SWA1680, SWA3001, SWA1177, SWA3705, SWA2725.