Apparatus

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sensors Mode-S transponder

A2AFEB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N272WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A2AFEB
Octal
50527753
Decimal
10,661,867
Country
US
Tail
N272WN
Type
B737
Broadcasting now · callsign SWA702 · 15,975 ft
Flights observed
803
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:40 UTC

Current position

A2AFEB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2AFEB 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
SWA1655 Southwest Airlines 9 2026-04-18
SWA3281 Southwest Airlines 6 2026-04-15
SWA9004 Southwest Airlines 5 2026-07-25
SWA598 - 5 2026-07-15
SWA3810 Southwest Airlines 5 2026-04-19
SWA3418 Southwest Airlines 5 2026-06-04
SWA3009 - 5 2026-07-13
SWA1285 - 5 2026-07-17
SWA910 - 4 2026-06-20
SWA9000 Southwest Airlines 4 2026-05-15
SWA63 Southwest Airlines 4 2026-05-12
SWA487 Southwest Airlines 4 2026-04-23
SWA4318 Southwest Airlines 4 2026-05-19
SWA4266 Southwest Airlines 4 2026-05-14
SWA3419 Southwest Airlines 4 2026-05-29
SWA322 Southwest Airlines 4 2026-04-19
SWA3010 - 4 2026-07-09
SWA297 Southwest Airlines 4 2026-06-15
SWA2957 - 4 2026-07-05
SWA2941 - 4 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA49 DAL → HOU Jul 26, 21:10 UTCJul 26, 22:40 UTC1h 30m
2026-07-26 SWA4108 RSW → STL Jul 26, 18:45 UTCJul 26, 19:55 UTC1h 10m
2026-07-26 SWA3970 BOS → STL Jul 26, 15:50 UTCJul 26, 17:45 UTC1h 55m
2026-07-26 SWA4854 MSY → FLL Jul 26, 11:40 UTCJul 26, 14:50 UTC3h 10m
2026-07-26 SWA8504 BWI → BUF Jul 26, 03:50 UTCJul 26, 05:05 UTC1h 15m
2026-07-25 SWA287 OAK → PHX Jul 25, 07:30 UTCJul 25, 08:20 UTC50m
2026-07-25 SWA287 OAK → PHX Jul 25, 07:28 UTCJul 25, 08:20 UTC52m
2026-07-25 SWA3675 SJC → PDX Jul 25, 03:45 UTCJul 25, 04:50 UTC1h 5m
2026-07-25 SWA342 SNA → SJC Jul 25, 02:10 UTCJul 25, 02:45 UTC35m
2026-07-25 SWA342 SNA → SJC Jul 25, 02:08 UTCJul 25, 03:00 UTC52m
2026-07-25 SWA9004 BHM → DAL Jul 25, 00:50 UTCJul 25, 01:30 UTC40m
2026-07-24 SWA9004 BHM → DAL Jul 24, 22:05 UTCJul 24, 23:50 UTC1h 45m
2026-07-24 SWA9004 BHM → DAL Jul 24, 20:35 UTCJul 24, 21:05 UTC30m
2026-07-24 SWA4610 ELP → SAT Jul 24, 17:35 UTCJul 24, 19:15 UTC1h 40m
2026-07-24 SWA4523 ATL → DCA Jul 24, 14:40 UTCJul 24, 16:30 UTC1h 50m
2026-07-24 SWA2093 MSY → DEN Jul 24, 12:20 UTCJul 24, 13:10 UTC50m
2026-07-24 SWA950 IND → PHX Jul 24, 02:20 UTCJul 24, 03:05 UTC45m
2026-07-23 SWA1900 LAS → OMA Jul 23, 23:30 UTCJul 24, 01:20 UTC1h 50m
2026-07-23 SWA1900 LAS → OMA Jul 23, 20:50 UTCJul 23, 22:20 UTC1h 30m
2026-07-23 SWA2761 MKE → MCO Jul 23, 18:00 UTCJul 23, 19:25 UTC1h 25m
2026-07-23 SWA4386 ATL → MSY Jul 23, 16:15 UTCJul 23, 17:05 UTC50m
2026-07-23 SWA4386 ATL → MSY Jul 23, 13:10 UTCJul 23, 15:10 UTC2h 0m
2026-07-23 SWA208 MDW → CVG Jul 23, 00:15 UTCJul 23, 01:00 UTC45m
2026-07-22 SWA2757 BWI → PWM Jul 22, 22:20 UTCJul 22, 22:55 UTC35m
2026-07-22 SWA2757 BWI → PWM Jul 22, 22:18 UTCJul 22, 23:04 UTC46m
2026-07-22 SWA2757 BWI → PWM Jul 22, 19:30 UTCJul 22, 21:15 UTC1h 45m
2026-07-22 SWA2757 BWI → PWM Jul 22, 17:15 UTCJul 22, 18:25 UTC1h 10m
2026-07-22 SWA1052 - Jul 22, 15:35 UTCJul 22, 16:10 UTC35m
2026-07-22 SWA1052 BWI → PIT Jul 22, 15:30 UTCJul 22, 16:08 UTC38m
2026-07-22 SWA4550 - Jul 22, 13:20 UTCJul 22, 14:05 UTC45m
2026-07-22 SWA2690 PHL → BNA Jul 22, 03:15 UTCJul 22, 04:35 UTC1h 20m
2026-07-22 SWA2690 PHL → BNA Jul 22, 03:14 UTCJul 22, 04:28 UTC1h 14m
2026-07-21 SWA692 PHX → BUR Jul 21, 22:35 UTCJul 22, 01:45 UTC3h 10m
2026-07-21 SWA692 PHX → BUR Jul 21, 18:00 UTCJul 21, 19:40 UTC1h 40m
2026-07-21 SWA1198 - Jul 21, 16:15 UTCJul 21, 17:00 UTC45m
2026-07-21 SWA1198 - Jul 21, 13:15 UTCJul 21, 15:15 UTC2h 0m
2026-07-21 SWA1255 PHX → SJC Jul 21, 03:15 UTCJul 21, 04:00 UTC45m
2026-07-20 SWA4749 BWI → HOU Jul 20, 22:55 UTCJul 21, 00:15 UTC1h 19m
2026-07-20 SWA4749 BWI → HOU Jul 20, 22:51 UTCJul 21, 00:14 UTC1h 23m
2026-07-20 SWA2029 PDX → OAK Jul 20, 20:25 UTCJul 20, 21:50 UTC1h 25m
2026-07-20 SWA2098 PHX → DAL Jul 20, 18:35 UTCJul 20, 19:15 UTC40m
2026-07-20 SWA4788 - Jul 20, 16:15 UTCJul 20, 17:15 UTC1h 0m
2026-07-20 SWA4788 DAL → HRL Jul 20, 16:11 UTCJul 20, 17:16 UTC1h 5m
2026-07-20 SWA8 - Jul 20, 13:05 UTCJul 20, 13:45 UTC40m
2026-07-20 SWA2162 - Jul 20, 09:40 UTCJul 20, 11:30 UTC1h 50m
2026-07-20 SWA2162 JAX → HOU Jul 20, 09:39 UTCJul 20, 11:28 UTC1h 49m
2026-07-20 SWA4624 - Jul 20, 02:25 UTCJul 20, 03:30 UTC1h 5m
2026-07-19 SWA816 PHX → BNA Jul 19, 21:30 UTCJul 20, 00:45 UTC3h 15m
2026-07-19 SWA816 BUR → PHX Jul 19, 19:25 UTCJul 19, 20:30 UTC1h 5m
2026-07-19 SWA358 - Jul 19, 17:20 UTCJul 19, 18:15 UTC55m

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 N272WN page for operator, model, and routing details .

Mode-S A2AFEB frequently asked

What is Mode-S code A2AFEB?
A2AFEB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N272WN.
Where is Mode-S A2AFEB registered?
Mode-S code A2AFEB 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 A2AFEB broadcasting right now?
Yes. Mode-S A2AFEB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2AFEB, octal 50527753, decimal 10,661,867.
What flights does A2AFEB operate?
Mode-S A2AFEB has broadcast 20 distinct callsigns, including SWA1655, SWA3281, SWA9004, SWA598, SWA3810.