Apparatus

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sensors Mode-S transponder

A1D93B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N218WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A1D93B
Octal
50354473
Decimal
10,606,907
Country
US
Tail
N218WN
Type
B737
No current signal · last broadcast Jul 26, 22:40 UTC
Flights observed
759
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:40 UTC

Last known position

Most recent position reported by Mode-S A1D93B.

Country allocation

The ICAO 24-bit address A1D93B 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
SWA2223 Southwest Airlines 10 2026-06-12
SWA2168 Southwest Airlines 7 2026-06-01
SWA3541 Southwest Airlines 6 2026-06-01
SWA1433 - 6 2026-07-18
SWA3940 - 5 2026-06-20
SWA3091 Southwest Airlines 5 2026-05-27
SWA684 - 4 2026-07-03
SWA4600 Southwest Airlines 4 2026-05-27
SWA4210 Southwest Airlines 4 2026-05-20
SWA3506 Southwest Airlines 4 2026-07-25
SWA3335 Southwest Airlines 4 2026-04-20
SWA3322 Southwest Airlines 4 2026-05-31
SWA2994 - 4 2026-04-13
SWA2718 Southwest Airlines 4 2026-05-30
SWA250 Southwest Airlines 4 2026-05-16
SWA2422 Southwest Airlines 4 2026-06-05
SWA2386 - 4 2026-07-13
SWA2267 - 4 2026-07-11
SWA2034 Southwest Airlines 4 2026-06-15
SWA1742 Southwest Airlines 4 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4370 TUL → PHX Jul 26, 21:55 UTCJul 26, 22:40 UTC45m
2026-07-26 SWA1255 PHX → SJC Jul 26, 19:50 UTCJul 26, 20:35 UTC45m
2026-07-26 SWA1255 PHX → SJC Jul 26, 19:47 UTCJul 26, 20:34 UTC47m
2026-07-26 SWA1149 MDW → MCI Jul 26, 16:15 UTCJul 26, 18:40 UTC2h 25m
2026-07-26 SWA1584 BOI → OAK Jul 26, 12:25 UTCJul 26, 13:30 UTC1h 5m
2026-07-26 SWA1975 MDW → MCO Jul 26, 02:45 UTCJul 26, 04:35 UTC1h 50m
2026-07-26 SWA1975 MDW → MCO Jul 26, 02:36 UTCJul 26, 04:32 UTC1h 57m
2026-07-26 SWA1810 BNA → LGA Jul 26, 00:20 UTCJul 26, 01:05 UTC45m
2026-07-25 SWA1453 PHL → BNA Jul 25, 21:20 UTCJul 25, 23:30 UTC2h 10m
2026-07-25 SWA1453 PHL → BNA Jul 25, 21:15 UTCJul 25, 23:25 UTC2h 10m
2026-07-25 SWA3478 MIA → BNA Jul 25, 18:50 UTCJul 25, 20:10 UTC1h 20m
2026-07-25 SWA3478 MIA → BNA Jul 25, 14:10 UTCJul 25, 17:55 UTC3h 45m
2026-07-25 SWA3506 PHX → OAK Jul 25, 04:40 UTCJul 25, 05:55 UTC1h 15m
2026-07-25 SWA3506 PHX → OAK Jul 25, 04:34 UTCJul 25, 05:50 UTC1h 16m
2026-07-25 SWA792 MDW → SAV Jul 25, 02:45 UTCJul 25, 03:40 UTC55m
2026-07-25 SWA792 MDW → SAV Jul 25, 02:40 UTCJul 25, 03:50 UTC1h 10m
2026-07-25 SWA792 MDW → SAV Jul 25, 01:00 UTCJul 25, 01:40 UTC40m
2026-07-24 SWA3563 LGA → MDW Jul 24, 22:55 UTCJul 24, 23:50 UTC55m
2026-07-24 SWA3563 LGA → MDW Jul 24, 19:55 UTCJul 24, 22:00 UTC2h 5m
2026-07-24 SWA1228 SAN → LAS Jul 24, 15:05 UTCJul 24, 18:50 UTC3h 45m
2026-07-24 SWA2735 ATL → PHL Jul 24, 11:40 UTCJul 24, 13:35 UTC1h 55m
2026-07-24 SWA2735 ATL → PHL Jul 24, 11:39 UTCJul 24, 13:25 UTC1h 46m
2026-07-23 SWA4004 SEA → OAK Jul 23, 23:10 UTCJul 24, 00:40 UTC1h 30m
2026-07-23 SWA3986 STL → TPA Jul 23, 15:55 UTCJul 23, 17:45 UTC1h 50m
2026-07-23 SWA3986 STL → TPA Jul 23, 15:53 UTCJul 23, 17:39 UTC1h 46m
2026-07-23 SWA3139 - Jul 23, 13:00 UTCJul 23, 13:50 UTC50m
2026-07-23 SWA4912 LAS → MCO Jul 23, 02:50 UTCJul 23, 03:45 UTC55m
2026-07-23 SWA3387 SJC → HNL Jul 23, 00:10 UTCJul 23, 01:35 UTC1h 25m
2026-07-22 SWA1850 OAK → AUS Jul 22, 22:20 UTCJul 22, 23:20 UTC1h 0m
2026-07-22 SWA1850 OAK → AUS Jul 22, 22:15 UTCJul 22, 23:18 UTC1h 3m
2026-07-22 SWA1850 OAK → AUS Jul 22, 19:15 UTCJul 22, 21:05 UTC1h 50m
2026-07-22 SWA4938 STL → FLL Jul 22, 15:50 UTCJul 22, 18:00 UTC2h 10m
2026-07-22 SWA1751 DEN → STL Jul 22, 12:45 UTCJul 22, 14:20 UTC1h 35m
2026-07-22 SWA4225 PHL → TPA Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-22 SWA4225 PHL → TPA Jul 22, 01:55 UTCJul 22, 03:30 UTC1h 35m
2026-07-21 SWA4810 BNA → HDN Jul 21, 21:35 UTCJul 22, 00:35 UTC3h 0m
2026-07-21 SWA1412 LAX → SJC Jul 21, 18:40 UTCJul 21, 20:00 UTC1h 20m
2026-07-21 SWA1412 LAX → SJC Jul 21, 18:38 UTCJul 21, 20:01 UTC1h 23m
2026-07-21 SWA3825 BNA → DCA Jul 21, 16:10 UTCJul 21, 17:35 UTC1h 25m
2026-07-21 SWA3825 BNA → DCA Jul 21, 16:08 UTCJul 21, 17:27 UTC1h 19m
2026-07-21 SWA3825 BNA → DCA Jul 21, 14:10 UTCJul 21, 15:15 UTC1h 5m
2026-07-21 SWA2739 DCA → TPA Jul 21, 11:10 UTCJul 21, 13:00 UTC1h 50m
2026-07-21 SWA4990 OMA → MDW Jul 21, 02:25 UTCJul 21, 03:55 UTC1h 30m
2026-07-21 SWA4990 OMA → MDW Jul 21, 02:24 UTCJul 21, 03:48 UTC1h 25m
2026-07-21 SWA4433 - Jul 21, 00:15 UTCJul 21, 01:35 UTC1h 20m
2026-07-20 SWA1345 - Jul 20, 17:45 UTCJul 20, 19:10 UTC1h 25m
2026-07-20 SWA1426 DCA → BNA Jul 20, 15:00 UTCJul 20, 16:20 UTC1h 20m
2026-07-20 SWA1426 - Jul 20, 12:40 UTCJul 20, 13:40 UTC1h 0m
2026-07-19 SWA1020 - Jul 19, 23:35 UTCJul 20, 00:25 UTC50m
2026-07-19 SWA234 LBB → LAS Jul 19, 21:40 UTCJul 19, 22:43 UTC1h 4m

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 N218WN page for operator, model, and routing details .

Mode-S A1D93B frequently asked

What is Mode-S code A1D93B?
A1D93B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N218WN.
Where is Mode-S A1D93B registered?
Mode-S code A1D93B 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 A1D93B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1D93B, octal 50354473, decimal 10,606,907.
What flights does A1D93B operate?
Mode-S A1D93B has broadcast 20 distinct callsigns, including SWA2223, SWA2168, SWA3541, SWA1433, SWA3940.