Apparatus

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sensors Mode-S transponder

A56E0D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N449WN · BOEING 737-700 · operated by SOUTHWEST AIRLINES CO

Hex
A56E0D
Octal
51267015
Decimal
10,841,613
Country
US
Tail
N449WN
Type
B737
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
751
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A56E0D.

Country allocation

The ICAO 24-bit address A56E0D 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
SWA351 - 8 2026-06-14
SWA3102 Southwest Airlines 7 2026-06-04
SWA3014 Southwest Airlines 7 2026-07-19
SWA169 Southwest Airlines 6 2026-06-02
SWA4500 Southwest Airlines 5 2026-06-16
SWA4133 - 5 2026-06-29
SWA3199 Southwest Airlines 5 2026-06-01
SWA246 - 5 2026-06-30
SWA1433 Southwest Airlines 5 2026-06-20
SWA715 Southwest Airlines 4 2026-07-23
SWA684 Southwest Airlines 4 2026-05-19
SWA496 - 4 2026-07-01
SWA4140 Southwest Airlines 4 2026-05-25
SWA3968 Southwest Airlines 4 2026-05-27
SWA38 Southwest Airlines 4 2026-05-20
SWA3281 Southwest Airlines 4 2026-04-22
SWA322 - 4 2026-06-28
SWA2986 - 4 2026-07-13
SWA295 Southwest Airlines 4 2026-07-20
SWA2896 Southwest Airlines 4 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA910 PHX → SAN Jul 26, 20:10 UTCJul 26, 21:15 UTC1h 5m
2026-07-26 SWA910 PHX → SAN Jul 26, 17:35 UTCJul 26, 19:10 UTC1h 35m
2026-07-26 SWA3967 MCO → CMH Jul 26, 15:05 UTCJul 26, 16:30 UTC1h 25m
2026-07-26 SWA184 MDW → MSY Jul 26, 12:35 UTCJul 26, 14:00 UTC1h 25m
2026-07-26 SWA1522 STL → DAL Jul 26, 01:50 UTCJul 26, 03:20 UTC1h 30m
2026-07-25 SWA4020 FLL → BWI Jul 25, 20:45 UTCJul 25, 23:55 UTC3h 10m
2026-07-25 SWA3609 SYR → MCO Jul 25, 17:50 UTCJul 25, 19:50 UTC2h 0m
2026-07-25 SWA1489 LAX → OAK Jul 25, 15:30 UTCJul 25, 16:35 UTC1h 5m
2026-07-25 SWA1489 LAX → OAK Jul 25, 15:27 UTCJul 25, 16:34 UTC1h 7m
2026-07-25 SWA3557 - Jul 25, 12:30 UTCJul 25, 14:25 UTC1h 55m
2026-07-25 SWA3557 SAT → BNA Jul 25, 12:25 UTCJul 25, 14:15 UTC1h 50m
2026-07-25 SWA2073 DAL → LGA Jul 25, 02:45 UTCJul 25, 04:30 UTC1h 45m
2026-07-25 SWA1709 PVD → TPA Jul 25, 00:25 UTCJul 25, 01:40 UTC1h 15m
2026-07-24 SWA1658 IAH → MSY Jul 24, 22:20 UTCJul 24, 23:20 UTC1h 0m
2026-07-24 SWA1658 IAH → MSY Jul 24, 18:55 UTCJul 24, 20:55 UTC2h 0m
2026-07-24 SWA4092 SNA → OAK Jul 24, 15:50 UTCJul 24, 18:00 UTC2h 10m
2026-07-24 SWA4092 SNA → OAK Jul 24, 15:46 UTCJul 24, 17:57 UTC2h 11m
2026-07-24 SWA1685 SNA → PHX Jul 24, 04:30 UTCJul 24, 05:50 UTC1h 20m
2026-07-23 SWA4300 BOI → LGB Jul 23, 21:50 UTCJul 24, 03:30 UTC5h 40m
2026-07-23 SWA106 BUR → SJC Jul 23, 19:20 UTCJul 23, 20:50 UTC1h 30m
2026-07-23 SWA106 BUR → SJC Jul 23, 17:35 UTCJul 23, 18:25 UTC50m
2026-07-23 SWA106 BUR → SJC Jul 23, 14:55 UTCJul 23, 16:25 UTC1h 30m
2026-07-23 SWA715 DAL → LGA Jul 23, 12:40 UTCJul 23, 13:45 UTC1h 5m
2026-07-23 SWA715 DAL → LGA Jul 23, 12:37 UTCJul 23, 13:44 UTC1h 7m
2026-07-23 SWA3806 SEA → OAK Jul 23, 05:15 UTCJul 23, 06:40 UTC1h 25m
2026-07-23 SWA1001 MCO → BWI Jul 23, 02:05 UTCJul 23, 04:10 UTC2h 5m
2026-07-22 SWA3871 SAN → PDX Jul 22, 23:45 UTCJul 23, 00:50 UTC1h 5m
2026-07-22 SWA33 ATL → DAL Jul 22, 21:35 UTCJul 22, 22:45 UTC1h 10m
2026-07-22 SWA34 HOU → DAL Jul 22, 18:10 UTCJul 22, 19:20 UTC1h 10m
2026-07-22 SWA3084 OAK → LAS Jul 22, 13:50 UTCJul 22, 14:55 UTC1h 5m
2026-07-22 SWA4467 - Jul 22, 05:05 UTCJul 22, 05:25 UTC20m
2026-07-22 SWA3786 PWM → BWI Jul 22, 02:55 UTCJul 22, 03:50 UTC55m
2026-07-21 SWA3793 BWI → BOS Jul 21, 22:55 UTCJul 22, 02:00 UTC3h 5m
2026-07-21 SWA2547 SNA → OAK Jul 21, 21:05 UTCJul 21, 21:50 UTC45m
2026-07-21 SWA2547 SNA → OAK Jul 21, 21:00 UTCJul 21, 21:43 UTC43m
2026-07-21 SWA516 SJC → SAN Jul 21, 18:25 UTCJul 21, 19:20 UTC55m
2026-07-21 SWA510 BWI → MHT Jul 21, 15:35 UTCJul 21, 16:55 UTC1h 20m
2026-07-21 SWA510 BWI → MHT Jul 21, 13:50 UTCJul 21, 14:45 UTC55m
2026-07-21 SWA3604 - Jul 21, 11:30 UTCJul 21, 12:00 UTC30m
2026-07-21 SWA3604 SDF → BNA Jul 21, 11:25 UTCJul 21, 11:56 UTC31m
2026-07-21 SWA671 LGB → DAL Jul 21, 02:50 UTCJul 21, 03:30 UTC40m
2026-07-21 SWA261 DCA → MSY Jul 21, 00:00 UTCJul 21, 01:50 UTC1h 50m
2026-07-20 SWA1784 BLI → OAK Jul 20, 21:40 UTCJul 20, 23:15 UTC1h 35m
2026-07-20 SWA295 SJC → LAS Jul 20, 18:45 UTCJul 20, 20:29 UTC1h 44m
2026-07-20 SWA295 SJC → LAS Jul 20, 18:45 UTCJul 20, 20:40 UTC1h 55m
2026-07-20 SWA295 SJC → LAS Jul 20, 16:35 UTCJul 20, 17:30 UTC55m
2026-07-20 SWA295 SJC → LAS Jul 20, 14:15 UTCJul 20, 16:10 UTC1h 55m
2026-07-20 SWA1425 DCA → BNA Jul 20, 11:35 UTCJul 20, 12:50 UTC1h 15m
2026-07-19 SWA3014 BUR → SJC Jul 19, 23:45 UTCJul 20, 02:30 UTC2h 45m
2026-07-19 SWA3014 BUR → SJC Jul 19, 21:55 UTCJul 19, 22:45 UTC50m

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 N449WN page for operator, model, and routing details .

Mode-S A56E0D frequently asked

What is Mode-S code A56E0D?
A56E0D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N449WN.
Where is Mode-S A56E0D registered?
Mode-S code A56E0D 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 A56E0D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A56E0D, octal 51267015, decimal 10,841,613.
What flights does A56E0D operate?
Mode-S A56E0D has broadcast 20 distinct callsigns, including SWA351, SWA3102, SWA3014, SWA169, SWA4500.