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sensors Mode-S transponder

AD2573

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N946WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
AD2573
Octal
53222563
Decimal
11,347,315
Country
US
Tail
N946WN
Type
B737
Broadcasting now · callsign SWA3360 · 15,975 ft
Flights observed
683
Distinct callsigns
20
Country
US
Last broadcast
25m ago

Current position

AD2573 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AD2573 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
SWA2137 Southwest Airlines 10 2026-05-30
SWA2803 - 6 2026-06-14
SWA7 Southwest Airlines 5 2026-05-30
SWA2360 - 5 2026-07-08
SWA1758 Southwest Airlines 5 2026-04-30
SWA133 - 5 2026-07-06
SWA1288 Southwest Airlines 5 2026-06-09
SWA1144 Southwest Airlines 5 2026-04-26
SWA692 - 4 2026-07-02
SWA556 Southwest Airlines 4 2026-06-04
SWA3638 - 4 2026-07-13
SWA3363 Southwest Airlines 4 2026-06-14
SWA2700 Southwest Airlines 4 2026-04-28
SWA27 - 4 2026-07-11
SWA2556 Southwest Airlines 4 2026-05-26
SWA22 Southwest Airlines 4 2026-06-06
SWA2146 Southwest Airlines 4 2026-04-20
SWA1840 - 4 2026-07-12
SWA1779 - 4 2026-06-28
SWA1523 Southwest Airlines 4 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 SWA3360 - Jul 15, 02:30 UTCJul 15, 02:45 UTC15m
2026-07-15 SWA3474 BUR → SMF Jul 15, 00:10 UTCJul 15, 01:05 UTC55m
2026-07-14 SWA1694 DEN → BUR Jul 14, 21:15 UTCJul 14, 23:07 UTC1h 52m
2026-07-14 SWA1694 DEN → BUR Jul 14, 21:15 UTCJul 14, 23:15 UTC1h 59m
2026-07-14 SWA1658 PDX → DEN Jul 14, 18:05 UTCJul 14, 20:15 UTC2h 10m
2026-07-14 SWA1658 PDX → DEN Jul 14, 18:05 UTCJul 14, 20:16 UTC2h 11m
2026-07-14 SWA4132 LAS → PDX Jul 14, 15:30 UTCJul 14, 17:10 UTC1h 40m
2026-07-14 SWA3800 - Jul 14, 12:30 UTCJul 14, 13:25 UTC55m
2026-07-14 SWA843 - Jul 14, 03:55 UTCJul 14, 04:45 UTC50m
2026-07-14 SWA843 BUR → RNO Jul 14, 03:54 UTCJul 14, 04:46 UTC52m
2026-07-14 SWA263 OAK → BUR Jul 14, 02:05 UTCJul 14, 03:00 UTC55m
2026-07-14 SWA806 BUR → OAK Jul 14, 00:10 UTCJul 14, 01:00 UTC50m
2026-07-13 SWA3638 SFO → BUR Jul 13, 22:25 UTCJul 13, 23:20 UTC55m
2026-07-13 SWA3638 SFO → BUR Jul 13, 22:22 UTCJul 13, 23:16 UTC54m
2026-07-13 SWA3334 PHX → SFO Jul 13, 20:00 UTCJul 13, 21:25 UTC1h 25m
2026-07-13 SWA375 - Jul 13, 16:55 UTCJul 13, 18:45 UTC1h 50m
2026-07-13 SWA375 BOS → AUS Jul 13, 12:10 UTCJul 13, 15:45 UTC3h 35m
2026-07-13 SWA2443 STL → BOS Jul 13, 01:30 UTCJul 13, 03:50 UTC2h 20m
2026-07-12 SWA174 BUR → STL Jul 12, 21:05 UTCJul 13, 00:25 UTC3h 20m
2026-07-12 SWA174 BUR → STL Jul 12, 21:04 UTCJul 13, 00:21 UTC3h 17m
2026-07-12 SWA1529 LAS → BUR Jul 12, 19:10 UTCJul 12, 19:54 UTC44m
2026-07-12 SWA1840 - Jul 12, 17:10 UTCJul 12, 17:50 UTC40m
2026-07-12 SWA1840 LAX → LAS Jul 12, 17:07 UTCJul 12, 17:47 UTC40m
2026-07-12 SWA1840 SMF → LAX Jul 12, 14:55 UTCJul 12, 16:05 UTC1h 10m
2026-07-12 SWA406 - Jul 12, 00:15 UTCJul 12, 02:45 UTC2h 30m
2026-07-12 SWA406 AUS → SMF Jul 12, 00:16 UTCJul 12, 03:20 UTC3h 4m
2026-07-11 SWA313 - Jul 11, 22:35 UTCJul 11, 23:15 UTC40m
2026-07-11 SWA313 HRL → AUS Jul 11, 22:30 UTCJul 11, 23:15 UTC45m
2026-07-11 SWA1984 - Jul 11, 20:55 UTCJul 11, 21:35 UTC40m
2026-07-11 SWA27 - Jul 11, 18:05 UTCJul 11, 18:45 UTC40m
2026-07-11 SWA27 DAL → HOU Jul 11, 18:01 UTCJul 11, 19:34 UTC1h 33m
2026-07-11 SWA27 - Jul 11, 15:05 UTCJul 11, 17:00 UTC1h 55m
2026-07-11 SWA27 - Jul 11, 12:30 UTCJul 11, 14:00 UTC1h 30m
2026-07-11 SWA3438 - Jul 11, 10:35 UTCJul 11, 11:05 UTC30m
2026-07-11 SWA2353 - Jul 11, 03:40 UTCJul 11, 04:05 UTC25m
2026-07-11 SWA2353 BWI → RIC Jul 11, 03:36 UTCJul 11, 04:01 UTC25m
2026-07-10 SWA4148 - Jul 10, 21:45 UTCJul 11, 02:10 UTC4h 25m
2026-07-10 SWA1232 COS → SAN Jul 10, 18:40 UTCJul 10, 20:30 UTC1h 50m
2026-07-10 SWA4326 LAS → COS Jul 10, 16:20 UTCJul 10, 17:40 UTC1h 20m
2026-07-10 SWA4326 TPA → LAS Jul 10, 10:50 UTCJul 10, 14:55 UTC4h 5m
2026-07-10 SWA2173 - Jul 10, 03:30 UTCJul 10, 04:55 UTC1h 25m
2026-07-09 SWA3140 BUR → BNA Jul 9, 21:20 UTCJul 10, 00:50 UTC3h 30m
2026-07-09 SWA4076 - Jul 9, 17:05 UTCJul 9, 19:50 UTC2h 45m
2026-07-09 SWA4076 - Jul 9, 15:25 UTCJul 9, 16:10 UTC45m
2026-07-09 SWA9002 MDW → CVG Jul 9, 13:40 UTCJul 9, 14:20 UTC40m
2026-07-09 SWA9002 MDW → CVG Jul 9, 13:39 UTCJul 9, 14:28 UTC49m
2026-07-09 SWA3109 - Jul 9, 10:50 UTCJul 9, 11:30 UTC40m
2026-07-09 SWA3109 OKC → DAL Jul 9, 10:49 UTCJul 9, 11:23 UTC34m
2026-07-09 SWA962 DAL → OKC Jul 9, 03:35 UTCJul 9, 04:10 UTC35m
2026-07-08 SWA716 - Jul 8, 23:50 UTCJul 9, 02:30 UTC2h 40m

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 N946WN page for operator, model, and routing details .

Mode-S AD2573 frequently asked

What is Mode-S code AD2573?
AD2573 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N946WN.
Where is Mode-S AD2573 registered?
Mode-S code AD2573 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 AD2573 broadcasting right now?
Yes. Mode-S AD2573 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD2573, octal 53222563, decimal 11,347,315.
What flights does AD2573 operate?
Mode-S AD2573 has broadcast 20 distinct callsigns, including SWA2137, SWA2803, SWA7, SWA2360, SWA1758.