Apparatus

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sensors Mode-S transponder

A27AEE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N259WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A27AEE
Octal
50475356
Decimal
10,648,302
Country
US
Tail
N259WN
Type
B737
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
768
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A27AEE.

Country allocation

The ICAO 24-bit address A27AEE 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
SWA1149 Southwest Airlines 7 2026-04-16
SWA866 Southwest Airlines 6 2026-05-24
SWA714 - 6 2026-06-21
SWA3816 - 6 2026-07-09
SWA2470 Southwest Airlines 5 2026-06-18
SWA487 Southwest Airlines 4 2026-04-17
SWA4724 - 4 2026-06-26
SWA3635 - 4 2026-07-14
SWA3536 Southwest Airlines 4 2026-06-30
SWA3528 Southwest Airlines 4 2026-05-27
SWA2330 Southwest Airlines 4 2026-04-20
SWA1753 Southwest Airlines 4 2026-05-26
SWA1530 - 4 2026-06-22
SWA1468 - 4 2026-07-12
SWA1343 Southwest Airlines 4 2026-05-26
SWA1327 Southwest Airlines 4 2026-04-14
SWA1297 - 4 2026-07-21
SWA1269 - 4 2026-07-18
SWA121 Southwest Airlines 4 2026-06-10
SWA1209 Southwest Airlines 4 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3006 HOU → SJD Jul 26, 16:05 UTCJul 26, 21:30 UTC5h 25m
2026-07-26 SWA4474 OAK → RNO Jul 26, 03:35 UTCJul 26, 05:05 UTC1h 30m
2026-07-26 SWA4474 OAK → RNO Jul 26, 03:30 UTCJul 26, 05:10 UTC1h 40m
2026-07-26 SWA1852 PHX → SFO Jul 26, 00:05 UTCJul 26, 02:20 UTC2h 15m
2026-07-26 SWA1852 PHX → SFO Jul 26, 00:00 UTCJul 26, 02:06 UTC2h 6m
2026-07-25 SWA726 BWI → BOS Jul 25, 20:50 UTCJul 25, 22:50 UTC2h 0m
2026-07-25 SWA726 BWI → BOS Jul 25, 20:46 UTCJul 25, 22:47 UTC2h 1m
2026-07-25 SWA726 BWI → BOS Jul 25, 15:45 UTCJul 25, 19:45 UTC4h 0m
2026-07-25 SWA712 ALB → BWI Jul 25, 12:50 UTCJul 25, 14:45 UTC1h 55m
2026-07-25 SWA644 SNA → SJC Jul 25, 05:15 UTCJul 25, 06:45 UTC1h 30m
2026-07-25 SWA3077 PHX → SEA Jul 25, 03:05 UTCJul 25, 04:23 UTC1h 18m
2026-07-25 SWA3077 PHX → SEA Jul 25, 03:05 UTCJul 25, 04:25 UTC1h 20m
2026-07-25 SWA4842 FLL → IND Jul 25, 00:28 UTCJul 25, 01:21 UTC54m
2026-07-25 SWA4842 FLL → IND Jul 25, 00:30 UTCJul 25, 01:30 UTC1h 0m
2026-07-24 SWA1887 OAK → BUR Jul 24, 20:40 UTCJul 24, 23:15 UTC2h 35m
2026-07-24 SWA1887 OAK → BUR Jul 24, 20:35 UTCJul 24, 23:05 UTC2h 30m
2026-07-24 SWA2491 PWM → MDW Jul 24, 17:35 UTCJul 24, 19:45 UTC2h 10m
2026-07-24 SWA2491 PWM → MDW Jul 24, 15:00 UTCJul 24, 16:00 UTC1h 0m
2026-07-24 SWA3057 PHX → AUS Jul 24, 02:25 UTCJul 24, 03:30 UTC1h 5m
2026-07-24 SWA2286 SJC → PDX Jul 24, 00:25 UTCJul 24, 01:30 UTC1h 5m
2026-07-23 SWA2286 SJC → PDX Jul 23, 20:40 UTCJul 23, 23:10 UTC2h 30m
2026-07-23 SWA786 SJC → BUR Jul 23, 17:15 UTCJul 23, 19:35 UTC2h 20m
2026-07-23 SWA786 SJC → BUR Jul 23, 15:30 UTCJul 23, 16:15 UTC45m
2026-07-23 SWA557 SJC → BUR Jul 23, 02:55 UTCJul 23, 05:35 UTC2h 40m
2026-07-22 SWA766 MDW → LGA Jul 22, 23:45 UTCJul 23, 01:05 UTC1h 20m
2026-07-22 SWA766 MDW → LGA Jul 22, 21:55 UTCJul 22, 22:55 UTC1h 0m
2026-07-22 SWA1357 OAK → LAX Jul 22, 17:40 UTCJul 22, 19:25 UTC1h 45m
2026-07-22 SWA3906 IAD → DEN Jul 22, 13:50 UTCJul 22, 16:30 UTC2h 40m
2026-07-22 SWA250 BOI → OAK Jul 22, 04:10 UTCJul 22, 05:19 UTC1h 9m
2026-07-22 SWA250 BOI → OAK Jul 22, 04:15 UTCJul 22, 05:25 UTC1h 10m
2026-07-22 SWA3398 LGA → HOU Jul 22, 01:45 UTCJul 22, 02:45 UTC1h 0m
2026-07-21 SWA1297 SMF → SAN Jul 21, 23:35 UTCJul 22, 00:50 UTC1h 15m
2026-07-21 SWA1297 DEN → SMF Jul 21, 20:40 UTCJul 21, 22:35 UTC1h 55m
2026-07-21 SWA1297 - Jul 21, 17:15 UTCJul 21, 19:35 UTC2h 20m
2026-07-21 SWA1297 BWI → SDF Jul 21, 14:55 UTCJul 21, 16:20 UTC1h 25m
2026-07-21 SWA2988 HRL → HOU Jul 21, 11:55 UTCJul 21, 13:30 UTC1h 35m
2026-07-21 SWA2988 HRL → HOU Jul 21, 11:50 UTCJul 21, 13:35 UTC1h 45m
2026-07-21 SWA4916 GRR → MCO Jul 21, 00:20 UTCJul 21, 02:45 UTC2h 25m
2026-07-20 SWA2866 DEN → BUR Jul 20, 20:40 UTCJul 20, 23:15 UTC2h 35m
2026-07-20 SWA2866 DEN → BUR Jul 20, 18:45 UTCJul 20, 19:40 UTC55m
2026-07-20 SWA2866 DEN → BUR Jul 20, 15:55 UTCJul 20, 17:45 UTC1h 50m
2026-07-20 SWA4103 PWM → BWI Jul 20, 13:00 UTCJul 20, 14:40 UTC1h 40m
2026-07-20 SWA4103 PWM → BWI Jul 20, 12:58 UTCJul 20, 14:40 UTC1h 42m
2026-07-20 SWA1894 BDL → BNA Jul 20, 10:45 UTCJul 20, 11:20 UTC35m
2026-07-20 SWA4113 - Jul 20, 03:10 UTCJul 20, 03:45 UTC35m
2026-07-19 SWA2657 MCO → HOU Jul 19, 23:10 UTCJul 20, 01:40 UTC2h 30m
2026-07-19 SWA335 LAX → SJC Jul 19, 19:10 UTCJul 19, 20:50 UTC1h 40m
2026-07-19 SWA335 LAX → SJC Jul 19, 17:35 UTCJul 19, 18:05 UTC30m
2026-07-19 SWA335 LAX → SJC Jul 19, 13:55 UTCJul 19, 16:30 UTC2h 35m
2026-07-19 SWA192 ATL → DAL Jul 19, 11:10 UTCJul 19, 12:45 UTC1h 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 N259WN page for operator, model, and routing details .

Mode-S A27AEE frequently asked

What is Mode-S code A27AEE?
A27AEE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N259WN.
Where is Mode-S A27AEE registered?
Mode-S code A27AEE 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 A27AEE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A27AEE, octal 50475356, decimal 10,648,302.
What flights does A27AEE operate?
Mode-S A27AEE has broadcast 20 distinct callsigns, including SWA1149, SWA866, SWA714, SWA3816, SWA2470.