Apparatus

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sensors Mode-S transponder

ABDC56

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8630B · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABDC56
Octal
52756126
Decimal
11,263,062
Country
US
Tail
N8630B
Type
B738
No current signal · last broadcast Jul 26, 20:35 UTC
Flights observed
719
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:35 UTC

Last known position

Most recent position reported by Mode-S ABDC56.

Country allocation

The ICAO 24-bit address ABDC56 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
SWA3064 Southwest Airlines 5 2026-05-21
SWA159 - 5 2026-07-08
SWA3815 Southwest Airlines 4 2026-06-13
SWA3557 - 4 2026-06-19
SWA1874 Southwest Airlines 4 2026-07-24
SWA1572 Southwest Airlines 4 2026-04-17
SWA1561 - 4 2026-07-01
SWA1418 - 4 2026-06-17
SWA136 - 4 2026-07-04
SWA1325 Southwest Airlines 4 2026-06-03
SWA1267 - 4 2026-07-05
SWA868 Southwest Airlines 3 2026-06-04
SWA654 Southwest Airlines 3 2026-04-26
SWA46 Southwest Airlines 3 2026-07-24
SWA455 - 3 2026-06-26
SWA4290 - 3 2026-07-06
SWA428 Southwest Airlines 3 2026-07-20
SWA3894 - 3 2026-06-21
SWA37 Southwest Airlines 3 2026-07-23
SWA3656 Southwest Airlines 3 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1358 SAN → SJC Jul 26, 18:50 UTCJul 26, 20:35 UTC1h 45m
2026-07-26 SWA3844 LGA → MDW Jul 26, 14:45 UTCJul 26, 17:30 UTC2h 45m
2026-07-26 SWA4989 LAS → DAL Jul 26, 11:50 UTCJul 26, 13:25 UTC1h 35m
2026-07-26 SWA4703 ATL → MDW Jul 26, 03:35 UTCJul 26, 05:15 UTC1h 40m
2026-07-26 SWA2894 CLT → BNA Jul 26, 00:15 UTCJul 26, 02:15 UTC2h 0m
2026-07-25 SWA2273 PSP → OAK Jul 25, 20:05 UTCJul 25, 22:10 UTC2h 5m
2026-07-25 SWA2273 PSP → OAK Jul 25, 20:04 UTCJul 25, 22:08 UTC2h 4m
2026-07-25 SWA1881 MDW → BOS Jul 25, 16:23 UTCJul 25, 18:40 UTC2h 17m
2026-07-25 SWA1881 MDW → BOS Jul 25, 16:25 UTCJul 25, 18:45 UTC2h 20m
2026-07-25 SWA4156 SJC → DEN Jul 25, 10:50 UTCJul 25, 14:45 UTC3h 55m
2026-07-25 SWA1494 SNA → OAK Jul 25, 02:40 UTCJul 25, 06:00 UTC3h 20m
2026-07-24 SWA3641 SJC → LAX Jul 24, 23:20 UTCJul 25, 01:25 UTC2h 5m
2026-07-24 SWA2343 SJC → SLC Jul 24, 20:55 UTCJul 24, 22:00 UTC1h 5m
2026-07-24 SWA2343 SJC → SLC Jul 24, 17:00 UTCJul 24, 19:15 UTC2h 15m
2026-07-24 SWA3978 DAL → DEN Jul 24, 13:55 UTCJul 24, 15:45 UTC1h 50m
2026-07-24 SWA3978 DAL → DEN Jul 24, 13:54 UTCJul 24, 15:35 UTC1h 41m
2026-07-24 SWA1874 MHT → MDW Jul 24, 09:55 UTCJul 24, 12:20 UTC2h 25m
2026-07-24 SWA1874 MHT → MDW Jul 24, 09:50 UTCJul 24, 12:15 UTC2h 26m
2026-07-24 SWA46 HOU → DAL Jul 24, 02:47 UTCJul 24, 05:15 UTC2h 28m
2026-07-24 SWA46 HOU → DAL Jul 24, 02:50 UTCJul 24, 05:20 UTC2h 30m
2026-07-23 SWA46 HOU → DAL Jul 23, 23:15 UTCJul 23, 23:55 UTC40m
2026-07-23 SWA37 DAL → HOU Jul 23, 21:50 UTCJul 23, 22:00 UTC10m
2026-07-23 SWA37 DAL → HOU Jul 23, 20:40 UTCJul 23, 22:00 UTC1h 20m
2026-07-23 SWA37 DAL → HOU Jul 23, 20:39 UTCJul 23, 21:30 UTC52m
2026-07-23 SWA2354 DEN → DAL Jul 23, 18:00 UTCJul 23, 19:35 UTC1h 35m
2026-07-23 SWA2060 PHX → OAK Jul 23, 15:35 UTCJul 23, 16:45 UTC1h 10m
2026-07-23 SWA2060 PHX → OAK Jul 23, 15:30 UTCJul 23, 16:36 UTC1h 6m
2026-07-23 SWA2060 PHX → OAK Jul 23, 12:35 UTCJul 23, 14:30 UTC1h 55m
2026-07-23 SWA4547 MCO → HOU Jul 23, 10:35 UTCJul 23, 11:20 UTC45m
2026-07-23 SWA4547 MCO → HOU Jul 23, 10:35 UTCJul 23, 11:22 UTC47m
2026-07-23 SWA935 MCO → MSY Jul 23, 02:20 UTCJul 23, 03:40 UTC1h 20m
2026-07-23 SWA935 BWI → DEN Jul 23, 02:15 UTCJul 23, 03:50 UTC1h 35m
2026-07-22 SWA2019 - Jul 22, 22:30 UTCJul 23, 00:45 UTC2h 15m
2026-07-22 SWA1776 OAK → BUR Jul 22, 18:40 UTCJul 22, 21:15 UTC2h 35m
2026-07-22 SWA2767 MDW → SRQ Jul 22, 16:00 UTCJul 22, 17:45 UTC1h 45m
2026-07-22 SWA418 SJC → LAS Jul 22, 14:00 UTCJul 22, 15:05 UTC1h 5m
2026-07-22 SWA418 SJC → LAS Jul 22, 13:55 UTCJul 22, 15:00 UTC1h 5m
2026-07-22 SWA1980 - Jul 22, 03:35 UTCJul 22, 13:00 UTC9h 25m
2026-07-22 SWA4493 SFO → PHX Jul 22, 00:45 UTCJul 22, 02:35 UTC1h 50m
2026-07-21 SWA2819 OAK → EUG Jul 21, 20:30 UTCJul 21, 22:50 UTC2h 20m
2026-07-20 SWA428 LAS → BUR Jul 20, 23:20 UTCJul 21, 01:20 UTC1h 59m
2026-07-20 SWA428 LAS → BUR Jul 20, 23:18 UTCJul 21, 01:15 UTC1h 57m
2026-07-20 SWA428 LAS → BUR Jul 20, 21:25 UTCJul 20, 22:15 UTC50m
2026-07-20 SWA1892 AUS → MSY Jul 20, 19:05 UTCJul 20, 20:15 UTC1h 10m
2026-07-20 SWA4849 ORD → BWI Jul 20, 16:35 UTCJul 20, 17:50 UTC1h 15m
2026-07-20 SWA1355 PHX → SJC Jul 20, 14:05 UTCJul 20, 15:20 UTC1h 15m
2026-07-20 SWA623 LGB → SJC Jul 20, 06:09 UTCJul 20, 09:54 UTC3h 46m
2026-07-20 SWA623 LGB → SJC Jul 20, 06:10 UTCJul 20, 09:55 UTC3h 45m
2026-07-20 SWA2352 LAS → SJC Jul 20, 04:00 UTCJul 20, 04:50 UTC50m
2026-07-19 SWA976 DEN → MDW Jul 19, 22:25 UTCJul 20, 02:40 UTC4h 15m

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 N8630B page for operator, model, and routing details .

Mode-S ABDC56 frequently asked

What is Mode-S code ABDC56?
ABDC56 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8630B.
Where is Mode-S ABDC56 registered?
Mode-S code ABDC56 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 ABDC56 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABDC56, octal 52756126, decimal 11,263,062.
What flights does ABDC56 operate?
Mode-S ABDC56 has broadcast 20 distinct callsigns, including SWA3064, SWA159, SWA3815, SWA3557, SWA1874.