Apparatus

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sensors Mode-S transponder

A2CFFC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N280WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A2CFFC
Octal
50547774
Decimal
10,670,076
Country
US
Tail
N280WN
Type
B737
No current signal · last broadcast Jul 26, 22:10 UTC
Flights observed
757
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:10 UTC

Last known position

Most recent position reported by Mode-S A2CFFC.

Country allocation

The ICAO 24-bit address A2CFFC 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
SWA4206 Southwest Airlines 6 2026-07-24
SWA3118 Southwest Airlines 6 2026-04-26
SWA4355 Southwest Airlines 5 2026-06-04
SWA1564 - 5 2026-07-18
SWA1518 Southwest Airlines 5 2026-05-22
SWA1096 - 5 2026-06-24
SWA868 - 4 2026-06-16
SWA487 Southwest Airlines 4 2026-07-23
SWA435 Southwest Airlines 4 2026-06-05
SWA428 - 4 2026-07-03
SWA3563 Southwest Airlines 4 2026-06-12
SWA2990 Southwest Airlines 4 2026-05-29
SWA2422 Southwest Airlines 4 2026-06-26
SWA2335 Southwest Airlines 4 2026-04-14
SWA1911 Southwest Airlines 4 2026-06-01
SWA1498 Southwest Airlines 4 2026-05-02
SWA990 - 3 2026-07-18
SWA862 Southwest Airlines 3 2026-05-18
SWA735 - 3 2026-06-16
SWA684 Southwest Airlines 3 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA697 PDX → OAK Jul 26, 21:10 UTCJul 26, 22:10 UTC1h 0m
2026-07-26 SWA1963 DAL → DEN Jul 26, 17:45 UTCJul 26, 20:05 UTC2h 20m
2026-07-26 SWA2825 BDL → BWI Jul 26, 15:30 UTCJul 26, 16:30 UTC1h 0m
2026-07-26 SWA1131 LAS → SJC Jul 26, 13:15 UTCJul 26, 14:40 UTC1h 25m
2026-07-26 SWA1141 SNA → OAK Jul 26, 10:55 UTCJul 26, 12:10 UTC1h 15m
2026-07-26 SWA1141 SNA → OAK Jul 26, 10:55 UTCJul 26, 12:01 UTC1h 6m
2026-07-26 SWA184 MDW → MSY Jul 26, 01:20 UTCJul 26, 02:30 UTC1h 10m
2026-07-25 SWA1805 AUA → BWI Jul 25, 19:45 UTCJul 26, 00:00 UTC4h 15m
2026-07-25 SWA1805 AUA → BWI Jul 25, 19:44 UTCJul 25, 23:51 UTC4h 7m
2026-07-25 SWA1443 BNA → LGA Jul 25, 18:00 UTCJul 25, 18:20 UTC20m
2026-07-25 SWA1443 BNA → LGA Jul 25, 15:40 UTCJul 25, 16:25 UTC45m
2026-07-25 SWA1443 BNA → LGA Jul 25, 15:37 UTCJul 25, 18:16 UTC2h 39m
2026-07-25 SWA1271 AUS → MCO Jul 25, 11:20 UTCJul 25, 13:00 UTC1h 40m
2026-07-25 SWA1271 AUS → MCO Jul 25, 11:15 UTCJul 25, 13:30 UTC2h 15m
2026-07-25 SWA198 BWI → TPA Jul 25, 03:15 UTCJul 25, 03:55 UTC40m
2026-07-25 SWA198 BWI → TPA Jul 25, 03:14 UTCJul 25, 03:53 UTC39m
2026-07-25 SWA198 BWI → TPA Jul 25, 00:40 UTCJul 25, 02:25 UTC1h 45m
2026-07-24 SWA962 TPA → BDL Jul 24, 22:15 UTCJul 24, 23:35 UTC1h 20m
2026-07-24 SWA962 TPA → BDL Jul 24, 19:10 UTCJul 24, 21:05 UTC1h 55m
2026-07-24 SWA4206 PHX → LGB Jul 24, 16:45 UTCJul 24, 18:05 UTC1h 20m
2026-07-24 SWA4206 PHX → LGB Jul 24, 16:43 UTCJul 24, 18:00 UTC1h 18m
2026-07-24 SWA4206 PHX → LGB Jul 24, 15:30 UTCJul 24, 15:55 UTC25m
2026-07-24 SWA4062 MCI → DEN Jul 24, 13:10 UTCJul 24, 14:15 UTC1h 5m
2026-07-24 SWA2982 SAN → OAK Jul 24, 01:20 UTCJul 24, 02:15 UTC55m
2026-07-24 SWA2982 SAN → OAK Jul 24, 01:20 UTCJul 24, 02:14 UTC54m
2026-07-23 SWA2982 SAN → OAK Jul 23, 23:25 UTCJul 24, 00:10 UTC45m
2026-07-23 SWA526 EUG → OAK Jul 23, 21:25 UTCJul 23, 22:20 UTC55m
2026-07-23 SWA526 EUG → OAK Jul 23, 18:55 UTCJul 23, 20:20 UTC1h 25m
2026-07-23 SWA487 ORD → DAL Jul 23, 16:30 UTCJul 23, 17:55 UTC1h 25m
2026-07-23 SWA487 ORD → DAL Jul 23, 14:05 UTCJul 23, 15:35 UTC1h 30m
2026-07-23 SWA3026 PHX → OAK Jul 23, 12:05 UTCJul 23, 13:00 UTC55m
2026-07-22 SWA603 BUR → SFO Jul 22, 23:50 UTCJul 23, 00:50 UTC1h 0m
2026-07-22 SWA1712 BDL → TPA Jul 22, 21:50 UTCJul 22, 22:30 UTC40m
2026-07-22 SWA1712 BDL → TPA Jul 22, 21:47 UTCJul 22, 22:22 UTC35m
2026-07-22 SWA1712 BDL → TPA Jul 22, 18:55 UTCJul 22, 20:45 UTC1h 50m
2026-07-22 SWA2783 - Jul 22, 15:30 UTCJul 22, 17:30 UTC2h 0m
2026-07-22 SWA3614 BOS → DEN Jul 22, 12:40 UTCJul 22, 14:05 UTC1h 25m
2026-07-21 SWA5062 DAL → MCO Jul 21, 17:10 UTCJul 21, 19:20 UTC2h 10m
2026-07-21 SWA617 BOI → PHX Jul 21, 13:30 UTCJul 21, 14:10 UTC40m
2026-07-21 SWA617 BOI → PHX Jul 21, 13:11 UTCJul 21, 14:07 UTC56m
2026-07-20 SWA616 LAS → SFO Jul 20, 22:35 UTCJul 20, 23:10 UTC35m
2026-07-20 SWA599 - Jul 20, 19:45 UTCJul 20, 20:35 UTC50m
2026-07-20 SWA600 - Jul 20, 16:45 UTCJul 20, 17:15 UTC30m
2026-07-20 SWA4854 MSY → FLL Jul 20, 11:15 UTCJul 20, 14:25 UTC3h 10m
2026-07-20 SWA4854 MSY → FLL Jul 20, 11:11 UTCJul 20, 14:22 UTC3h 12m
2026-07-20 SWA3267 BUR → OAK Jul 20, 05:05 UTCJul 20, 06:30 UTC1h 25m
2026-07-20 SWA3267 BUR → OAK Jul 20, 05:05 UTCJul 20, 06:29 UTC1h 24m
2026-07-20 SWA3526 - Jul 20, 03:05 UTCJul 20, 03:55 UTC50m
2026-07-20 SWA3994 - Jul 20, 00:25 UTCJul 20, 01:45 UTC1h 20m
2026-07-20 SWA3994 STS → SAN Jul 20, 00:24 UTCJul 20, 01:45 UTC1h 21m

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 N280WN page for operator, model, and routing details .

Mode-S A2CFFC frequently asked

What is Mode-S code A2CFFC?
A2CFFC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N280WN.
Where is Mode-S A2CFFC registered?
Mode-S code A2CFFC 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 A2CFFC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2CFFC, octal 50547774, decimal 10,670,076.
What flights does A2CFFC operate?
Mode-S A2CFFC has broadcast 20 distinct callsigns, including SWA4206, SWA3118, SWA4355, SWA1564, SWA1518.