Apparatus

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sensors Mode-S transponder

A2EFAE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N289CT · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A2EFAE
Octal
50567656
Decimal
10,678,190
Country
US
Tail
N289CT
Type
B737
No current signal · last broadcast Jul 26, 20:25 UTC
Flights observed
773
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:25 UTC

Last known position

Most recent position reported by Mode-S A2EFAE.

Country allocation

The ICAO 24-bit address A2EFAE 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
SWA923 Southwest Airlines 7 2026-04-23
SWA1416 - 6 2026-07-17
SWA3012 Southwest Airlines 5 2026-07-20
SWA2556 Southwest Airlines 5 2026-05-25
SWA1292 Southwest Airlines 5 2026-04-26
SWA999 Southwest Airlines 4 2026-05-25
SWA889 Southwest Airlines 4 2026-05-13
SWA4264 Southwest Airlines 4 2026-05-30
SWA4076 Southwest Airlines 4 2026-07-20
SWA3908 Southwest Airlines 4 2026-05-20
SWA3544 Southwest Airlines 4 2026-05-05
SWA3532 Southwest Airlines 4 2026-06-01
SWA3460 - 4 2026-07-13
SWA3232 - 4 2026-06-27
SWA3102 Southwest Airlines 4 2026-05-30
SWA2759 Southwest Airlines 4 2026-04-16
SWA2741 - 4 2026-07-13
SWA263 Southwest Airlines 4 2026-05-10
SWA2570 - 4 2026-07-16
SWA2278 Southwest Airlines 4 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA2314 MDW → PIT Jul 26, 18:40 UTCJul 26, 20:25 UTC1h 45m
2026-07-26 SWA3458 LAX → SFO Jul 26, 16:45 UTCJul 26, 17:35 UTC50m
2026-07-26 SWA1079 PHL → DAL Jul 26, 15:00 UTCJul 26, 15:50 UTC50m
2026-07-26 SWA4064 PIT → RSW Jul 26, 12:10 UTCJul 26, 13:40 UTC1h 30m
2026-07-26 SWA4375 LAX → KOA Jul 26, 00:10 UTCJul 26, 01:30 UTC1h 20m
2026-07-25 SWA757 LGA → DAL Jul 25, 22:25 UTCJul 25, 23:15 UTC50m
2026-07-25 SWA768 SJC → AUS Jul 25, 20:10 UTCJul 25, 21:00 UTC50m
2026-07-25 SWA246 SJC → HNL Jul 25, 13:10 UTCJul 25, 14:15 UTC1h 5m
2026-07-25 SWA869 BUR → OAK Jul 25, 11:10 UTCJul 25, 12:00 UTC50m
2026-07-25 SWA869 BUR → OAK Jul 25, 11:05 UTCJul 25, 11:55 UTC50m
2026-07-25 SWA2746 FLL → MCO Jul 25, 02:30 UTCJul 25, 03:45 UTC1h 15m
2026-07-25 SWA2746 FLL → MCO Jul 25, 02:29 UTCJul 25, 03:50 UTC1h 21m
2026-07-24 SWA4707 MSP → BWI Jul 24, 21:10 UTCJul 24, 22:15 UTC1h 5m
2026-07-24 SWA2866 DEN → BUR Jul 24, 19:15 UTCJul 24, 20:10 UTC55m
2026-07-24 SWA1445 LAS → SJC Jul 24, 16:35 UTCJul 24, 18:05 UTC1h 30m
2026-07-24 SWA3905 IND → ECP Jul 24, 13:40 UTCJul 24, 15:25 UTC1h 45m
2026-07-24 SWA3905 IND → ECP Jul 24, 13:38 UTCJul 24, 15:21 UTC1h 43m
2026-07-24 SWA1165 LAX → PHX Jul 24, 10:50 UTCJul 24, 12:00 UTC1h 10m
2026-07-24 SWA1165 LAX → PHX Jul 24, 10:45 UTCJul 24, 11:57 UTC1h 12m
2026-07-24 SWA4153 ATL → FLL Jul 24, 01:10 UTCJul 24, 01:55 UTC45m
2026-07-23 SWA2029 PDX → OAK Jul 23, 23:05 UTCJul 24, 00:05 UTC1h 0m
2026-07-23 SWA2029 PDX → OAK Jul 23, 23:04 UTCJul 24, 00:02 UTC58m
2026-07-23 SWA2029 PDX → OAK Jul 23, 20:30 UTCJul 23, 22:00 UTC1h 30m
2026-07-23 SWA2098 PHX → DAL Jul 23, 18:35 UTCJul 23, 19:30 UTC55m
2026-07-23 SWA4788 - Jul 23, 16:20 UTCJul 23, 17:20 UTC1h 0m
2026-07-23 SWA4788 DAL → HRL Jul 23, 16:18 UTCJul 23, 17:20 UTC1h 2m
2026-07-23 SWA8506 LAS → OAK Jul 23, 03:30 UTCJul 23, 04:45 UTC1h 15m
2026-07-23 SWA8506 LAS → OAK Jul 23, 03:25 UTCJul 23, 04:42 UTC1h 17m
2026-07-23 SWA1338 STL → LIT Jul 23, 01:25 UTCJul 23, 02:45 UTC1h 20m
2026-07-22 SWA4054 PHX → SJC Jul 22, 22:00 UTCJul 22, 22:40 UTC40m
2026-07-22 SWA4054 PHX → SJC Jul 22, 21:57 UTCJul 22, 22:39 UTC42m
2026-07-22 SWA2091 SJC → GEG Jul 22, 20:05 UTCJul 22, 21:10 UTC1h 5m
2026-07-22 SWA2091 SJC → GEG Jul 22, 20:04 UTCJul 22, 21:06 UTC1h 2m
2026-07-22 SWA11 DAL → HOU Jul 22, 15:15 UTCJul 22, 16:05 UTC50m
2026-07-22 SWA3916 STL → BWI Jul 22, 13:30 UTCJul 22, 14:05 UTC35m
2026-07-22 SWA3916 STL → BWI Jul 22, 13:27 UTCJul 22, 14:03 UTC36m
2026-07-22 SWA1265 DFW → AUS Jul 22, 11:50 UTCJul 22, 12:25 UTC35m
2026-07-22 SWA1265 DAL → AUS Jul 22, 11:46 UTCJul 22, 12:19 UTC33m
2026-07-22 SWA241 SAN → PHX Jul 22, 00:55 UTCJul 22, 02:20 UTC1h 25m
2026-07-21 SWA816 LAS → COS Jul 21, 21:40 UTCJul 21, 23:45 UTC2h 5m
2026-07-21 SWA816 LAS → COS Jul 21, 21:35 UTCJul 21, 23:38 UTC2h 3m
2026-07-21 SWA284 ATL → DEN Jul 21, 18:20 UTCJul 21, 20:10 UTC1h 50m
2026-07-21 SWA284 ATL → DEN Jul 21, 16:10 UTCJul 21, 17:05 UTC55m
2026-07-21 SWA2108 BWI → BOS Jul 21, 13:55 UTCJul 21, 15:20 UTC1h 25m
2026-07-21 SWA2108 BWI → BOS Jul 21, 10:40 UTCJul 21, 12:35 UTC1h 55m
2026-07-21 SWA539 - Jul 21, 02:15 UTCJul 21, 03:00 UTC45m
2026-07-20 SWA3140 OMA → PHX Jul 20, 21:15 UTCJul 21, 01:00 UTC3h 45m
2026-07-20 SWA3140 OMA → PHX Jul 20, 21:14 UTCJul 21, 00:58 UTC3h 44m
2026-07-20 SWA4076 LAS → GRR Jul 20, 17:05 UTCJul 20, 19:40 UTC2h 35m
2026-07-20 SWA4076 LAS → GRR Jul 20, 17:00 UTCJul 20, 19:33 UTC2h 33m

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 N289CT page for operator, model, and routing details .

Mode-S A2EFAE frequently asked

What is Mode-S code A2EFAE?
A2EFAE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N289CT.
Where is Mode-S A2EFAE registered?
Mode-S code A2EFAE 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 A2EFAE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2EFAE, octal 50567656, decimal 10,678,190.
What flights does A2EFAE operate?
Mode-S A2EFAE has broadcast 20 distinct callsigns, including SWA923, SWA1416, SWA3012, SWA2556, SWA1292.