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 Jul 26, 22:15 UTC
Flights observed
761
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

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
SWA3705 Southwest Airlines 10 2026-07-25
SWA1680 - 8 2026-06-27
SWA3001 - 7 2026-07-10
SWA1177 Southwest Airlines 7 2026-04-17
SWA715 - 6 2026-07-16
SWA2725 - 6 2026-04-17
SWA2051 - 6 2026-07-09
SWA4906 Southwest Airlines 5 2026-07-25
SWA2384 - 5 2026-07-13
SWA2288 - 5 2026-04-13
SWA2223 Southwest Airlines 5 2026-05-02
SWA170 - 5 2026-07-19
SWA937 Southwest Airlines 4 2026-07-22
SWA807 Southwest Airlines 4 2026-06-02
SWA726 - 4 2026-06-30
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4076 LAS → GRR Jul 26, 20:30 UTCJul 26, 22:15 UTC1h 45m
2026-07-26 SWA339 LAX → PHX Jul 26, 18:05 UTCJul 26, 19:20 UTC1h 15m
2026-07-26 SWA339 LAX → PHX Jul 26, 14:45 UTCJul 26, 16:45 UTC2h 0m
2026-07-26 SWA4862 BUF → MDW Jul 26, 11:15 UTCJul 26, 13:45 UTC2h 30m
2026-07-26 SWA4305 DAL → OAK Jul 26, 00:55 UTCJul 26, 02:00 UTC1h 5m
2026-07-26 SWA4305 DAL → OAK Jul 26, 00:52 UTCJul 26, 02:01 UTC1h 9m
2026-07-25 SWA407 BOS → STL Jul 25, 21:35 UTCJul 25, 23:30 UTC1h 55m
2026-07-25 SWA2211 SAN → SJC Jul 25, 19:05 UTCJul 25, 20:25 UTC1h 20m
2026-07-25 SWA2211 SAN → SJC Jul 25, 19:01 UTCJul 25, 20:20 UTC1h 19m
2026-07-25 SWA2211 SAN → SJC Jul 25, 17:10 UTCJul 25, 17:55 UTC45m
2026-07-25 SWA2211 SAN → SJC Jul 25, 15:00 UTCJul 25, 16:15 UTC1h 15m
2026-07-25 SWA3629 SFO → LAX Jul 25, 12:24 UTCJul 25, 13:53 UTC1h 29m
2026-07-25 SWA3629 SFO → LAX Jul 25, 12:25 UTCJul 25, 13:55 UTC1h 30m
2026-07-25 SWA3705 MCO → MHT Jul 25, 06:10 UTCJul 25, 07:40 UTC1h 30m
2026-07-25 SWA3705 MCO → MHT Jul 25, 06:07 UTCJul 25, 07:38 UTC1h 32m
2026-07-25 SWA4936 LAX → OAK Jul 25, 04:35 UTCJul 25, 05:25 UTC50m
2026-07-25 SWA4906 MSY → DEN Jul 25, 03:05 UTCJul 25, 03:55 UTC50m
2026-07-25 SWA4906 MSY → DEN Jul 25, 03:02 UTCJul 25, 03:53 UTC51m
2026-07-25 SWA3525 MDW → ORF Jul 25, 01:15 UTCJul 25, 02:10 UTC55m
2026-07-24 SWA3525 MDW → ORF Jul 24, 20:20 UTCJul 24, 21:35 UTC1h 15m
2026-07-24 SWA3532 SJC → OGG Jul 24, 16:47 UTCJul 24, 17:49 UTC1h 2m
2026-07-24 SWA3532 SJC → OGG Jul 24, 16:50 UTCJul 24, 17:55 UTC1h 5m
2026-07-24 SWA1844 SNA → OAK Jul 24, 13:35 UTCJul 24, 14:30 UTC55m
2026-07-24 SWA407 BOS → STL Jul 24, 06:55 UTCJul 24, 07:35 UTC40m
2026-07-24 SWA548 DEN → AUS Jul 24, 01:40 UTCJul 24, 05:00 UTC3h 20m
2026-07-23 SWA1768 OAK → SNA Jul 23, 23:50 UTCJul 24, 00:20 UTC30m
2026-07-23 SWA1768 OAK → SNA Jul 23, 23:47 UTCJul 24, 00:19 UTC32m
2026-07-23 SWA1768 OAK → SNA Jul 23, 20:35 UTCJul 23, 23:00 UTC2h 25m
2026-07-23 SWA1090 BWI → CHS Jul 23, 17:40 UTCJul 23, 19:20 UTC1h 40m
2026-07-23 SWA1090 BWI → CHS Jul 23, 13:40 UTCJul 23, 16:40 UTC3h 0m
2026-07-23 SWA1090 BWI → CHS Jul 23, 11:20 UTCJul 23, 12:25 UTC1h 5m
2026-07-23 SWA184 MDW → MSY Jul 23, 01:00 UTCJul 23, 02:15 UTC1h 15m
2026-07-22 SWA3191 BWI → CVG Jul 22, 21:55 UTCJul 22, 23:55 UTC2h 0m
2026-07-22 SWA937 SJC → SNA Jul 22, 18:35 UTCJul 22, 21:00 UTC2h 25m
2026-07-22 SWA937 SJC → SNA Jul 22, 16:55 UTCJul 22, 17:40 UTC45m
2026-07-22 SWA937 SJC → SNA Jul 22, 14:55 UTCJul 22, 15:50 UTC55m
2026-07-22 SWA937 SJC → SNA Jul 22, 13:05 UTCJul 22, 13:50 UTC45m
2026-07-22 SWA1359 - Jul 22, 03:45 UTCJul 22, 05:25 UTC1h 40m
2026-07-22 SWA1359 DAL → MDW Jul 22, 03:42 UTCJul 22, 05:29 UTC1h 47m
2026-07-21 SWA4282 STL → VPS Jul 21, 22:31 UTCJul 22, 01:46 UTC3h 16m
2026-07-21 SWA4282 STL → VPS Jul 21, 22:35 UTCJul 22, 01:45 UTC3h 10m
2026-07-21 SWA2165 SJC → PDX Jul 21, 20:30 UTCJul 21, 21:20 UTC50m
2026-07-21 SWA106 BUR → SJC Jul 21, 18:35 UTCJul 21, 19:17 UTC42m
2026-07-21 SWA4724 SYR → BWI Jul 21, 16:45 UTCJul 21, 17:25 UTC40m
2026-07-21 SWA4245 SJC → SAN Jul 21, 14:35 UTCJul 21, 15:35 UTC1h 0m
2026-07-21 SWA2314 MDW → PIT Jul 21, 06:05 UTCJul 21, 06:50 UTC45m
2026-07-21 SWA2314 MDW → PIT Jul 21, 03:05 UTCJul 21, 05:05 UTC2h 0m
2026-07-20 SWA3846 - Jul 20, 23:30 UTCJul 21, 00:10 UTC39m
2026-07-20 SWA3087 HOU → ATL Jul 20, 21:10 UTCJul 20, 22:15 UTC1h 5m
2026-07-20 SWA4893 - Jul 20, 19:05 UTCJul 20, 19:55 UTC50m

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 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 AD2CE1, octal 53226341, decimal 11,349,217.
What flights does AD2CE1 operate?
Mode-S AD2CE1 has broadcast 20 distinct callsigns, including SWA3705, SWA1680, SWA3001, SWA1177, SWA715.