Apparatus

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sensors Mode-S transponder

A29391

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N265WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A29391
Octal
50511621
Decimal
10,654,609
Country
US
Tail
N265WN
Type
B737
No current signal · last broadcast Jul 26, 21:20 UTC
Flights observed
744
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:20 UTC

Last known position

Most recent position reported by Mode-S A29391.

Country allocation

The ICAO 24-bit address A29391 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
SWA757 Southwest Airlines 9 2026-06-16
SWA8 - 7 2026-04-13
SWA120 Southwest Airlines 7 2026-07-26
SWA2235 - 6 2026-07-06
SWA203 Southwest Airlines 6 2026-06-03
SWA1437 - 6 2026-06-15
SWA3091 Southwest Airlines 5 2026-05-17
SWA2546 Southwest Airlines 5 2026-05-24
SWA2099 Southwest Airlines 5 2026-04-14
SWA921 Southwest Airlines 4 2026-07-20
SWA9000 Southwest Airlines 4 2026-05-22
SWA4640 Southwest Airlines 4 2026-05-19
SWA3968 Southwest Airlines 4 2026-05-21
SWA3624 Southwest Airlines 4 2026-06-17
SWA311 Southwest Airlines 4 2026-06-11
SWA2951 - 4 2026-07-13
SWA2869 Southwest Airlines 4 2026-07-19
SWA2433 Southwest Airlines 4 2026-05-18
SWA1927 Southwest Airlines 4 2026-06-08
SWA14 - 4 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4479 ALB → BWI Jul 26, 19:45 UTCJul 26, 21:20 UTC1h 35m
2026-07-26 SWA4380 BWI → HOU Jul 26, 17:05 UTCJul 26, 18:25 UTC1h 20m
2026-07-26 SWA2407 LAS → OAK Jul 26, 13:55 UTCJul 26, 15:35 UTC1h 40m
2026-07-26 SWA645 SJC → ONT Jul 26, 10:45 UTCJul 26, 12:50 UTC2h 5m
2026-07-26 SWA1133 SNA → SJC Jul 26, 05:25 UTCJul 26, 07:05 UTC1h 41m
2026-07-26 SWA1133 SNA → SJC Jul 26, 03:50 UTCJul 26, 04:30 UTC40m
2026-07-26 SWA1133 SNA → SJC Jul 26, 01:45 UTCJul 26, 04:15 UTC2h 30m
2026-07-26 SWA120 MCI → BWI Jul 26, 01:44 UTCJul 26, 02:25 UTC41m
2026-07-26 SWA120 MCI → BWI Jul 26, 00:30 UTCJul 26, 00:45 UTC15m
2026-07-25 SWA120 MCI → BWI Jul 25, 22:30 UTCJul 25, 23:10 UTC40m
2026-07-25 SWA120 MCI → BWI Jul 25, 20:25 UTCJul 25, 21:25 UTC1h 0m
2026-07-25 SWA120 MCI → BWI Jul 25, 18:05 UTCJul 25, 19:30 UTC1h 25m
2026-07-25 SWA120 MCI → BWI Jul 25, 15:35 UTCJul 25, 16:40 UTC1h 5m
2026-07-25 SWA120 MCI → BWI Jul 25, 13:35 UTCJul 25, 14:45 UTC1h 10m
2026-07-25 SWA3634 SAV → MDW Jul 25, 06:30 UTCJul 25, 10:15 UTC3h 45m
2026-07-25 SWA3634 SAV → MDW Jul 25, 06:26 UTCJul 25, 10:10 UTC3h 44m
2026-07-25 SWA4397 BUR → OAK Jul 25, 04:05 UTCJul 25, 05:15 UTC1h 10m
2026-07-25 SWA4116 DEN → PHX Jul 25, 01:10 UTCJul 25, 02:10 UTC1h 0m
2026-07-24 SWA4464 ATL → MCO Jul 24, 23:10 UTCJul 25, 00:20 UTC1h 10m
2026-07-24 SWA3700 ORF → BWI Jul 24, 20:57 UTCJul 24, 22:04 UTC1h 7m
2026-07-24 SWA3700 ORF → BWI Jul 24, 21:00 UTCJul 24, 22:05 UTC1h 5m
2026-07-24 SWA4973 MSY → MDW Jul 24, 19:10 UTCJul 24, 19:55 UTC45m
2026-07-24 SWA4973 MSY → MDW Jul 24, 19:05 UTCJul 24, 19:52 UTC47m
2026-07-24 SWA3795 BNA → MKE Jul 24, 17:05 UTCJul 24, 18:10 UTC1h 5m
2026-07-24 SWA3795 BNA → MKE Jul 24, 17:00 UTCJul 24, 18:06 UTC1h 6m
2026-07-24 SWA4218 ALB → BWI Jul 24, 12:55 UTCJul 24, 15:55 UTC3h 0m
2026-07-24 SWA4218 ALB → BWI Jul 24, 12:50 UTCJul 24, 15:55 UTC3h 5m
2026-07-24 SWA3492 OAK → LGB Jul 24, 01:35 UTCJul 24, 04:15 UTC2h 40m
2026-07-23 SWA236 STL → HOU Jul 23, 20:10 UTCJul 24, 00:30 UTC4h 20m
2026-07-23 SWA236 STL → HOU Jul 23, 17:45 UTCJul 23, 19:00 UTC1h 15m
2026-07-23 SWA236 STL → HOU Jul 23, 15:20 UTCJul 23, 16:30 UTC1h 10m
2026-07-23 SWA2973 MSP → STL Jul 23, 13:00 UTCJul 23, 14:00 UTC1h 0m
2026-07-23 SWA2677 STL → MCO Jul 23, 04:50 UTCJul 23, 06:15 UTC1h 25m
2026-07-23 SWA3265 BNA → CHS Jul 23, 01:50 UTCJul 23, 03:15 UTC1h 25m
2026-07-22 SWA4237 SDF → TPA Jul 22, 19:05 UTCJul 22, 20:40 UTC1h 35m
2026-07-22 SWA2934 - Jul 22, 16:55 UTCJul 22, 18:00 UTC1h 5m
2026-07-22 SWA544 BNA → LAS Jul 22, 12:00 UTCJul 22, 15:20 UTC3h 20m
2026-07-22 SWA1168 BWI → ALB Jul 22, 04:35 UTCJul 22, 05:25 UTC50m
2026-07-22 SWA1168 BWI → ALB Jul 22, 04:29 UTCJul 22, 05:26 UTC57m
2026-07-21 SWA4937 DCA → HOU Jul 21, 23:50 UTCJul 22, 01:10 UTC1h 20m
2026-07-21 SWA1461 MDW → MIA Jul 21, 20:50 UTCJul 21, 22:50 UTC2h 0m
2026-07-21 SWA105 DEN → ABQ Jul 21, 15:50 UTCJul 21, 18:35 UTC2h 45m
2026-07-21 SWA105 DEN → ABQ Jul 21, 13:20 UTCJul 21, 14:45 UTC1h 25m
2026-07-21 SWA1468 LGA → ATL Jul 21, 04:00 UTCJul 21, 04:55 UTC55m
2026-07-20 SWA921 BNA → LGA Jul 20, 23:40 UTCJul 21, 02:15 UTC2h 35m
2026-07-20 SWA921 BNA → LGA Jul 20, 23:35 UTCJul 21, 02:09 UTC2h 34m
2026-07-20 SWA921 BNA → LGA Jul 20, 21:55 UTCJul 20, 22:50 UTC55m
2026-07-20 SWA921 BNA → LGA Jul 20, 20:05 UTCJul 20, 20:55 UTC50m
2026-07-20 SWA966 - Jul 20, 18:20 UTCJul 20, 19:00 UTC40m
2026-07-20 SWA966 BWI → ISP Jul 20, 18:15 UTCJul 20, 18:57 UTC42m

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 N265WN page for operator, model, and routing details .

Mode-S A29391 frequently asked

What is Mode-S code A29391?
A29391 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N265WN.
Where is Mode-S A29391 registered?
Mode-S code A29391 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 A29391 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29391, octal 50511621, decimal 10,654,609.
What flights does A29391 operate?
Mode-S A29391 has broadcast 20 distinct callsigns, including SWA757, SWA8, SWA120, SWA2235, SWA203.