Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A20471

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N229WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A20471
Octal
50402161
Decimal
10,617,969
Country
US
Tail
N229WN
Type
B737
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
703
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A20471.

Country allocation

The ICAO 24-bit address A20471 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
SWA826 Southwest Airlines 5 2026-05-29
SWA670 - 5 2026-06-23
SWA644 Southwest Airlines 5 2026-06-17
SWA512 Southwest Airlines 5 2026-05-19
SWA4724 Southwest Airlines 5 2026-07-18
SWA434 Southwest Airlines 5 2026-07-20
SWA3120 Southwest Airlines 5 2026-05-19
SWA250 Southwest Airlines 5 2026-05-26
SWA2376 Southwest Airlines 5 2026-05-21
SWA2103 Southwest Airlines 5 2026-04-16
SWA1285 Southwest Airlines 5 2026-05-14
SWA862 - 4 2026-06-28
SWA721 Southwest Airlines 4 2026-04-18
SWA3908 Southwest Airlines 4 2026-05-06
SWA301 Southwest Airlines 4 2026-05-15
SWA2793 - 4 2026-07-01
SWA2735 - 4 2026-07-14
SWA235 - 4 2026-06-28
SWA2310 Southwest Airlines 4 2026-04-18
SWA2298 Southwest Airlines 4 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2334 SAN → SFO Jul 26, 21:35 UTCJul 26, 22:15 UTC40m
2026-07-26 SWA2643 ATL → MSY Jul 26, 19:45 UTCJul 26, 20:35 UTC50m
2026-07-26 SWA8501 PAE → OAK Jul 26, 16:05 UTCJul 26, 18:15 UTC2h 10m
2026-07-24 SWA1482 LAX → OAK Jul 24, 01:35 UTCJul 24, 02:35 UTC1h 0m
2026-07-23 SWA4746 LAS → RNO Jul 23, 22:30 UTCJul 24, 00:20 UTC1h 50m
2026-07-23 SWA4441 DEN → LGA Jul 23, 17:47 UTCJul 23, 21:10 UTC3h 23m
2026-07-23 SWA4441 DEN → LGA Jul 23, 17:50 UTCJul 23, 21:15 UTC3h 25m
2026-07-23 SWA1828 - Jul 23, 13:20 UTCJul 23, 15:25 UTC2h 5m
2026-07-23 SWA1828 EUG → DEN Jul 23, 13:15 UTCJul 23, 15:18 UTC2h 4m
2026-07-23 SWA551 MKE → PHX Jul 23, 04:35 UTCJul 23, 05:30 UTC55m
2026-07-23 SWA3793 BWI → BOS Jul 23, 00:25 UTCJul 23, 03:30 UTC3h 5m
2026-07-22 SWA2547 SNA → OAK Jul 22, 22:35 UTCJul 22, 23:25 UTC50m
2026-07-22 SWA516 SJC → SAN Jul 22, 20:55 UTCJul 22, 21:50 UTC55m
2026-07-21 SWA4493 SFO → PHX Jul 21, 01:00 UTCJul 21, 02:50 UTC1h 50m
2026-07-20 SWA1352 DAL → MCO Jul 20, 21:05 UTCJul 20, 23:15 UTC2h 10m
2026-07-20 SWA1352 DAL → MCO Jul 20, 21:02 UTCJul 20, 23:13 UTC2h 12m
2026-07-20 SWA4328 - Jul 20, 18:00 UTCJul 20, 19:20 UTC1h 20m
2026-07-20 SWA434 LAX → SJC Jul 20, 16:35 UTCJul 20, 17:00 UTC25m
2026-07-20 SWA434 LAX → SJC Jul 20, 16:31 UTCJul 20, 17:02 UTC31m
2026-07-20 SWA434 LAX → SJC Jul 20, 13:50 UTCJul 20, 15:20 UTC1h 30m
2026-07-20 SWA1353 - Jul 20, 12:10 UTCJul 20, 12:55 UTC45m
2026-07-20 SWA1353 SAT → DAL Jul 20, 12:06 UTCJul 20, 12:54 UTC48m
2026-07-20 SWA2073 DEN → SAT Jul 20, 01:45 UTCJul 20, 03:30 UTC1h 45m
2026-07-19 SWA1599 SEA → OAK Jul 19, 22:05 UTCJul 19, 23:40 UTC1h 35m
2026-07-19 SWA1599 SEA → OAK Jul 19, 20:45 UTCJul 19, 21:10 UTC25m
2026-07-19 SWA1201 ELP → PHX Jul 19, 18:48 UTCJul 19, 19:40 UTC52m
2026-07-19 SWA1201 - Jul 19, 16:30 UTCJul 19, 17:25 UTC55m
2026-07-19 SWA2093 AUS → DEN Jul 19, 13:25 UTCJul 19, 15:05 UTC1h 40m
2026-07-19 SWA2093 - Jul 19, 11:40 UTCJul 19, 12:20 UTC40m
2026-07-19 SWA950 - Jul 19, 01:15 UTCJul 19, 01:55 UTC40m
2026-07-18 SWA950 - Jul 18, 23:40 UTCJul 19, 00:10 UTC30m
2026-07-18 SWA1534 LAX → MDW Jul 18, 20:10 UTCJul 18, 22:35 UTC2h 25m
2026-07-18 SWA3697 - Jul 18, 17:00 UTCJul 18, 19:05 UTC2h 5m
2026-07-18 SWA234 LBB → LAS Jul 18, 13:30 UTCJul 18, 15:55 UTC2h 25m
2026-07-18 SWA752 DEN → AUS Jul 18, 10:00 UTCJul 18, 12:30 UTC2h 30m
2026-07-18 SWA4724 SYR → BWI Jul 18, 01:05 UTCJul 18, 03:25 UTC2h 21m
2026-07-18 SWA4724 SYR → BWI Jul 18, 01:02 UTCJul 18, 03:30 UTC2h 28m
2026-07-17 SWA4724 SYR → BWI Jul 17, 22:15 UTCJul 17, 23:50 UTC1h 35m
2026-07-17 SWA4724 SYR → BWI Jul 17, 18:40 UTCJul 17, 21:15 UTC2h 35m
2026-07-17 SWA4724 SYR → BWI Jul 17, 16:49 UTCJul 17, 17:30 UTC40m
2026-07-17 SWA3327 LAS → BUR Jul 17, 15:10 UTCJul 17, 15:53 UTC43m
2026-07-17 SWA3934 - Jul 17, 11:20 UTCJul 17, 14:04 UTC2h 45m
2026-07-17 SWA682 - Jul 17, 03:05 UTCJul 17, 03:50 UTC45m
2026-07-17 SWA482 STL → BNA Jul 17, 00:35 UTCJul 17, 01:25 UTC50m
2026-07-17 SWA482 STL → BNA Jul 17, 00:31 UTCJul 17, 01:18 UTC47m
2026-07-16 SWA1094 SAV → STL Jul 16, 22:05 UTCJul 16, 23:40 UTC1h 35m
2026-07-16 SWA1094 BWI → SAV Jul 16, 19:25 UTCJul 16, 20:45 UTC1h 20m
2026-07-16 SWA1534 - Jul 16, 16:25 UTCJul 16, 18:25 UTC2h 0m
2026-07-16 SWA4653 - Jul 16, 12:55 UTCJul 16, 15:14 UTC2h 20m
2026-07-16 SWA2413 - Jul 16, 07:10 UTCJul 16, 10:45 UTC3h 35m

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 N229WN page for operator, model, and routing details .

Mode-S A20471 frequently asked

What is Mode-S code A20471?
A20471 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N229WN.
Where is Mode-S A20471 registered?
Mode-S code A20471 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 A20471 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 A20471, octal 50402161, decimal 10,617,969.
What flights does A20471 operate?
Mode-S A20471 has broadcast 20 distinct callsigns, including SWA826, SWA670, SWA644, SWA512, SWA4724.