Apparatus

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sensors Mode-S transponder

ABD559

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8613K · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABD559
Octal
52752531
Decimal
11,261,273
Country
US
Tail
N8613K
Type
B738
Broadcasting now · callsign SWA3716 · 31,000 ft
Flights observed
780
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Current position

ABD559 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABD559 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
SWA471 Southwest Airlines 7 2026-07-23
SWA2038 Southwest Airlines 7 2026-06-04
SWA3547 Southwest Airlines 5 2026-04-17
SWA1624 - 5 2026-07-06
SWA981 Southwest Airlines 4 2026-07-26
SWA569 - 4 2026-06-23
SWA4359 Southwest Airlines 4 2026-06-04
SWA4209 Southwest Airlines 4 2026-04-16
SWA2891 Southwest Airlines 4 2026-04-16
SWA1925 Southwest Airlines 4 2026-05-17
SWA187 Southwest Airlines 4 2026-05-17
SWA1843 Southwest Airlines 4 2026-07-08
SWA1718 Southwest Airlines 4 2026-05-21
SWA1076 Southwest Airlines 4 2026-05-06
SWA1049 - 4 2026-07-07
SWA921 Southwest Airlines 3 2026-05-06
SWA9002 Southwest Airlines 3 2026-06-10
SWA843 Southwest Airlines 3 2026-05-13
SWA597 - 3 2026-07-11
SWA457 Southwest Airlines 3 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1140 SJC → LAS Jul 26, 21:35 UTCJul 26, 22:15 UTC40m
2026-07-26 SWA440 DAL → MCI Jul 26, 18:25 UTCJul 26, 20:30 UTC2h 5m
2026-07-26 SWA981 SJC → LAX Jul 26, 14:45 UTCJul 26, 17:25 UTC2h 40m
2026-07-26 SWA981 SJC → LAX Jul 26, 14:42 UTCJul 26, 17:26 UTC2h 44m
2026-07-26 SWA981 SJC → LAX Jul 26, 12:10 UTCJul 26, 13:05 UTC55m
2026-07-26 SWA3198 TPA → PVD Jul 26, 01:30 UTCJul 26, 05:45 UTC4h 15m
2026-07-26 SWA3198 TPA → PVD Jul 26, 01:29 UTCJul 26, 05:41 UTC4h 13m
2026-07-25 SWA975 LAS → BUR Jul 25, 21:00 UTCJul 26, 00:20 UTC3h 20m
2026-07-25 SWA975 LAS → BUR Jul 25, 20:59 UTCJul 26, 00:22 UTC3h 23m
2026-07-25 SWA3791 TPA → ATL Jul 25, 17:30 UTCJul 25, 19:50 UTC2h 20m
2026-07-25 SWA2728 BWI → MHT Jul 25, 12:55 UTCJul 25, 16:25 UTC3h 30m
2026-07-25 SWA3214 PVD → BWI Jul 25, 05:50 UTCJul 25, 07:05 UTC1h 15m
2026-07-25 SWA1682 MDW → ROC Jul 25, 02:45 UTCJul 25, 05:00 UTC2h 15m
2026-07-25 SWA1682 MDW → ROC Jul 25, 00:00 UTCJul 25, 01:30 UTC1h 30m
2026-07-24 SWA4219 MSP → TPA Jul 24, 18:50 UTCJul 24, 22:50 UTC4h 0m
2026-07-24 SWA4394 MSY → MIA Jul 24, 15:55 UTCJul 24, 17:25 UTC1h 30m
2026-07-24 SWA4394 MSY → MIA Jul 24, 13:10 UTCJul 24, 14:45 UTC1h 35m
2026-07-24 SWA4689 OKC → DEN Jul 24, 10:30 UTCJul 24, 11:48 UTC1h 18m
2026-07-24 SWA1961 SAN → SJC Jul 24, 03:35 UTCJul 24, 06:05 UTC2h 30m
2026-07-24 SWA3673 LAS → SJC Jul 24, 01:35 UTCJul 24, 02:35 UTC1h 0m
2026-07-23 SWA3673 LAS → SJC Jul 23, 17:40 UTCJul 23, 22:05 UTC4h 25m
2026-07-23 SWA3209 OAK → LAS Jul 23, 14:45 UTCJul 23, 16:20 UTC1h 35m
2026-07-23 SWA3209 OAK → LAS Jul 23, 14:40 UTCJul 23, 16:13 UTC1h 33m
2026-07-23 SWA471 OAK → ONT Jul 23, 12:05 UTCJul 23, 13:15 UTC1h 10m
2026-07-23 SWA3307 PHX → OAK Jul 23, 06:25 UTCJul 23, 07:55 UTC1h 30m
2026-07-23 SWA2863 SJC → LGB Jul 23, 02:10 UTCJul 23, 05:20 UTC3h 10m
2026-07-23 SWA2863 SJC → LGB Jul 23, 02:09 UTCJul 23, 05:14 UTC3h 6m
2026-07-22 SWA2930 - Jul 22, 22:05 UTCJul 23, 00:45 UTC2h 40m
2026-07-22 SWA498 OAK → BUR Jul 22, 18:35 UTCJul 22, 20:55 UTC2h 20m
2026-07-22 SWA865 - Jul 22, 14:25 UTCJul 22, 16:15 UTC1h 50m
2026-07-22 SWA865 BWI → AUS Jul 22, 14:24 UTCJul 22, 17:17 UTC2h 53m
2026-07-21 SWA1284 DAL → GRR Jul 21, 22:15 UTCJul 22, 00:40 UTC2h 25m
2026-07-21 SWA2219 LAS → DAL Jul 21, 18:55 UTCJul 21, 21:15 UTC2h 20m
2026-07-21 SWA2408 SJC → PDX Jul 21, 16:35 UTCJul 21, 17:30 UTC55m
2026-07-21 SWA452 DEN → SLC Jul 21, 14:14 UTCJul 21, 15:16 UTC1h 2m
2026-07-21 SWA452 DEN → SLC Jul 21, 14:15 UTCJul 21, 15:20 UTC1h 5m
2026-07-21 SWA3368 DEN → BOS Jul 21, 09:50 UTCJul 21, 12:50 UTC3h 0m
2026-07-21 SWA4164 - Jul 21, 03:05 UTCJul 21, 03:55 UTC50m
2026-07-20 SWA1144 - Jul 20, 23:40 UTCJul 21, 01:10 UTC1h 30m
2026-07-20 SWA900 BWI → MHT Jul 20, 21:40 UTCJul 20, 22:50 UTC1h 10m
2026-07-20 SWA900 BWI → MHT Jul 20, 21:35 UTCJul 20, 22:53 UTC1h 18m
2026-07-20 SWA4609 BNA → MKE Jul 20, 18:25 UTCJul 20, 20:30 UTC2h 5m
2026-07-20 SWA4940 STL → RSW Jul 20, 15:10 UTCJul 20, 17:10 UTC2h 0m
2026-07-20 SWA4940 STL → RSW Jul 20, 15:07 UTCJul 20, 17:08 UTC2h 1m
2026-07-20 SWA2931 LGB → RNO Jul 20, 11:35 UTCJul 20, 13:55 UTC2h 20m
2026-07-20 SWA4859 - Jul 20, 02:30 UTCJul 20, 04:45 UTC2h 15m
2026-07-20 SWA4859 HOU → MIA Jul 20, 02:26 UTCJul 20, 04:44 UTC2h 18m
2026-07-19 SWA716 - Jul 19, 21:55 UTCJul 20, 00:45 UTC2h 50m
2026-07-19 SWA4017 DAL → ONT Jul 19, 18:15 UTCJul 19, 20:45 UTC2h 30m
2026-07-19 SWA4017 DAL → ONT Jul 19, 18:15 UTCJul 19, 20:38 UTC2h 23m

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 N8613K page for operator, model, and routing details .

Mode-S ABD559 frequently asked

What is Mode-S code ABD559?
ABD559 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8613K.
Where is Mode-S ABD559 registered?
Mode-S code ABD559 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 ABD559 broadcasting right now?
Yes. Mode-S ABD559 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABD559, octal 52752531, decimal 11,261,273.
What flights does ABD559 operate?
Mode-S ABD559 has broadcast 20 distinct callsigns, including SWA471, SWA2038, SWA3547, SWA1624, SWA981.