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sensors Mode-S transponder

A5A6C1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N463WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A5A6C1
Octal
51323301
Decimal
10,856,129
Country
US
Tail
N463WN
Type
B737
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
724
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S A5A6C1.

Country allocation

The ICAO 24-bit address A5A6C1 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
SWA2335 Southwest Airlines 8 2026-05-09
SWA1776 Southwest Airlines 8 2026-04-24
SWA263 Southwest Airlines 7 2026-05-18
SWA2384 - 7 2026-07-10
SWA3968 - 6 2026-04-13
SWA470 Southwest Airlines 5 2026-05-07
SWA285 - 5 2026-07-17
SWA2451 - 5 2026-06-25
SWA869 Southwest Airlines 4 2026-04-15
SWA487 Southwest Airlines 4 2026-07-18
SWA4561 Southwest Airlines 4 2026-04-24
SWA4389 - 4 2026-06-26
SWA3913 Southwest Airlines 4 2026-04-23
SWA3473 Southwest Airlines 4 2026-06-30
SWA3335 Southwest Airlines 4 2026-05-28
SWA311 Southwest Airlines 4 2026-07-23
SWA2273 - 4 2026-07-08
SWA2178 - 4 2026-06-19
SWA1779 - 4 2026-07-06
SWA1372 - 4 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3963 SJC → SAN Jul 26, 22:00 UTCJul 26, 22:15 UTC15m
2026-07-26 SWA3940 SJC → LGB Jul 26, 19:20 UTCJul 26, 21:05 UTC1h 45m
2026-07-26 SWA3940 SJC → LGB Jul 26, 17:25 UTCJul 26, 18:15 UTC50m
2026-07-26 SWA4399 BUR → OAK Jul 26, 15:40 UTCJul 26, 16:20 UTC40m
2026-07-26 SWA4741 SJC → DEN Jul 26, 13:25 UTCJul 26, 14:45 UTC1h 20m
2026-07-26 SWA4582 BOS → MCO Jul 26, 11:05 UTCJul 26, 12:00 UTC55m
2026-07-26 SWA3979 DEN → BOI Jul 26, 00:05 UTCJul 26, 01:45 UTC1h 40m
2026-07-25 SWA1031 DEN → OAK Jul 25, 22:05 UTCJul 25, 22:45 UTC40m
2026-07-25 SWA1031 DEN → OAK Jul 25, 22:00 UTCJul 25, 22:39 UTC39m
2026-07-25 SWA1031 DEN → OAK Jul 25, 19:35 UTCJul 25, 21:05 UTC1h 30m
2026-07-25 SWA1642 OAK → BLI Jul 25, 17:20 UTCJul 25, 18:10 UTC50m
2026-07-25 SWA1642 OAK → BLI Jul 25, 17:18 UTCJul 25, 18:05 UTC47m
2026-07-25 SWA1642 OAK → BLI Jul 25, 15:05 UTCJul 25, 16:25 UTC1h 20m
2026-07-25 SWA408 SRQ → BWI Jul 25, 12:30 UTCJul 25, 14:10 UTC1h 40m
2026-07-25 SWA1953 LAX → OAK Jul 25, 05:00 UTCJul 25, 05:35 UTC35m
2026-07-25 SWA1953 LAX → OAK Jul 25, 04:58 UTCJul 25, 05:28 UTC30m
2026-07-25 SWA606 SFO → PHX Jul 25, 02:17 UTCJul 25, 04:12 UTC1h 55m
2026-07-25 SWA606 SFO → PHX Jul 25, 02:20 UTCJul 25, 04:10 UTC1h 50m
2026-07-25 SWA1222 BUR → OAK Jul 25, 00:20 UTCJul 25, 00:40 UTC20m
2026-07-24 SWA1222 BUR → OAK Jul 24, 20:35 UTCJul 24, 22:25 UTC1h 50m
2026-07-24 SWA1222 BUR → OAK Jul 24, 17:55 UTCJul 24, 19:10 UTC1h 15m
2026-07-24 SWA860 PHX → SFO Jul 24, 15:45 UTCJul 24, 16:45 UTC1h 0m
2026-07-24 SWA860 PHX → SFO Jul 24, 13:50 UTCJul 24, 14:45 UTC55m
2026-07-24 SWA4313 MCO → ISP Jul 24, 05:40 UTCJul 24, 07:20 UTC1h 40m
2026-07-24 SWA4313 MCO → ISP Jul 24, 05:39 UTCJul 24, 07:17 UTC1h 38m
2026-07-24 SWA294 HOU → ELP Jul 24, 02:20 UTCJul 24, 04:30 UTC2h 10m
2026-07-24 SWA294 HOU → ELP Jul 24, 00:45 UTCJul 24, 01:35 UTC50m
2026-07-23 SWA311 BNA → DTW Jul 23, 22:50 UTCJul 23, 23:35 UTC45m
2026-07-23 SWA311 BNA → DTW Jul 23, 20:40 UTCJul 23, 21:40 UTC1h 0m
2026-07-23 SWA311 BNA → DTW Jul 23, 16:50 UTCJul 23, 19:05 UTC2h 15m
2026-07-23 SWA311 BNA → DTW Jul 23, 14:20 UTCJul 23, 15:45 UTC1h 25m
2026-07-23 SWA2666 BWI → HOU Jul 23, 01:10 UTCJul 23, 03:40 UTC2h 30m
2026-07-22 SWA692 PHX → BUR Jul 22, 21:05 UTCJul 22, 23:45 UTC2h 40m
2026-07-22 SWA692 PHX → BUR Jul 22, 21:02 UTCJul 22, 23:43 UTC2h 41m
2026-07-22 SWA692 PHX → BUR Jul 22, 18:05 UTCJul 22, 19:35 UTC1h 30m
2026-07-22 SWA1198 - Jul 22, 16:15 UTCJul 22, 17:10 UTC55m
2026-07-22 SWA1198 - Jul 22, 13:20 UTCJul 22, 15:15 UTC1h 55m
2026-07-21 SWA3772 LAS → SLC Jul 21, 23:20 UTCJul 22, 02:30 UTC3h 10m
2026-07-21 SWA3772 LAS → SLC Jul 21, 23:19 UTCJul 22, 02:29 UTC3h 10m
2026-07-21 SWA3772 LAS → SLC Jul 21, 21:30 UTCJul 21, 22:25 UTC55m
2026-07-21 SWA3991 BWI → TPA Jul 21, 19:25 UTCJul 21, 20:25 UTC1h 0m
2026-07-21 SWA3685 - Jul 21, 16:35 UTCJul 21, 18:10 UTC1h 35m
2026-07-21 SWA544 - Jul 21, 12:00 UTCJul 21, 15:15 UTC3h 15m
2026-07-21 SWA4006 CMH → SRQ Jul 21, 01:45 UTCJul 21, 03:15 UTC1h 30m
2026-07-20 SWA1997 HNL → OAK Jul 20, 22:35 UTCJul 21, 00:40 UTC2h 4m
2026-07-20 SWA159 SLC → DEN Jul 20, 19:55 UTCJul 20, 20:45 UTC50m
2026-07-20 SWA159 SLC → DEN Jul 20, 17:00 UTCJul 20, 18:50 UTC1h 50m
2026-07-20 SWA4091 - Jul 20, 03:55 UTCJul 20, 04:50 UTC55m
2026-07-20 SWA4091 MDW → BNA Jul 20, 03:52 UTCJul 20, 04:46 UTC54m
2026-07-20 SWA4258 ATL → PHX Jul 20, 01:05 UTCJul 20, 02:55 UTC1h 50m

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 N463WN page for operator, model, and routing details .

Mode-S A5A6C1 frequently asked

What is Mode-S code A5A6C1?
A5A6C1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N463WN.
Where is Mode-S A5A6C1 registered?
Mode-S code A5A6C1 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 A5A6C1 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 A5A6C1, octal 51323301, decimal 10,856,129.
What flights does A5A6C1 operate?
Mode-S A5A6C1 has broadcast 20 distinct callsigns, including SWA2335, SWA1776, SWA263, SWA2384, SWA3968.