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sensors Mode-S transponder

ABBD47

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8557Q · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABBD47
Octal
52736507
Decimal
11,255,111
Country
US
Tail
N8557Q
Type
B738
Transponder active on ground
Flights observed
599
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S ABBD47.

Country allocation

The ICAO 24-bit address ABBD47 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
SWA4286 - 4 2026-04-13
SWA961 - 3 2026-06-27
SWA935 Southwest Airlines 3 2026-04-23
SWA864 Southwest Airlines 3 2026-06-14
SWA459 Southwest Airlines 3 2026-05-16
SWA4324 Southwest Airlines 3 2026-06-19
SWA3971 - 3 2026-04-13
SWA3553 Southwest Airlines 3 2026-05-04
SWA3353 - 3 2026-07-13
SWA3300 Southwest Airlines 3 2026-05-13
SWA29 Southwest Airlines 3 2026-04-20
SWA284 - 3 2026-06-26
SWA281 - 3 2026-06-18
SWA2731 - 3 2026-07-01
SWA2713 - 3 2026-06-24
SWA2623 Southwest Airlines 3 2026-04-19
SWA2613 Southwest Airlines 3 2026-06-06
SWA2519 Southwest Airlines 3 2026-04-21
SWA2190 Southwest Airlines 3 2026-04-27
SWA1732 - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA4338 SLC → LAS Jul 14, 23:45 UTCJul 15, 00:45 UTC1h 0m
2026-07-14 SWA4338 SLC → LAS Jul 14, 23:44 UTCJul 15, 00:39 UTC55m
2026-07-14 SWA843 - Jul 14, 21:10 UTCJul 14, 22:35 UTC1h 25m
2026-07-14 SWA1838 - Jul 14, 17:40 UTCJul 14, 19:40 UTC2h 0m
2026-07-14 SWA1532 DEN → EUG Jul 14, 14:26 UTCJul 14, 16:31 UTC2h 5m
2026-07-14 SWA1532 DEN → EUG Jul 14, 14:30 UTCJul 14, 16:35 UTC2h 5m
2026-07-14 SWA3565 - Jul 14, 11:20 UTCJul 14, 13:05 UTC1h 45m
2026-07-14 SWA3979 STL → SAT Jul 14, 03:35 UTCJul 14, 05:20 UTC1h 45m
2026-07-13 SWA3353 PHX → STL Jul 13, 23:55 UTCJul 14, 02:40 UTC2h 45m
2026-07-13 SWA3353 PHX → STL Jul 13, 23:55 UTCJul 14, 02:38 UTC2h 43m
2026-07-13 SWA3353 SLC → PHX Jul 13, 21:40 UTCJul 13, 23:00 UTC1h 20m
2026-07-13 SWA1732 - Jul 13, 19:35 UTCJul 13, 20:30 UTC55m
2026-07-13 SWA1732 DEN → SLC Jul 13, 19:31 UTCJul 13, 20:27 UTC56m
2026-07-13 SWA699 - Jul 13, 16:50 UTCJul 13, 18:20 UTC1h 30m
2026-07-13 SWA818 DEN → BOI Jul 13, 14:00 UTCJul 13, 15:25 UTC1h 25m
2026-07-13 SWA818 DEN → BOI Jul 13, 13:59 UTCJul 13, 15:25 UTC1h 26m
2026-07-13 SWA4083 - Jul 13, 09:25 UTCJul 13, 12:30 UTC3h 5m
2026-07-13 SWA1260 - Jul 13, 01:15 UTCJul 13, 03:45 UTC2h 30m
2026-07-13 SWA1260 AUS → RDU Jul 13, 01:14 UTCJul 13, 03:54 UTC2h 40m
2026-07-12 SWA4956 SEA → AUS Jul 12, 20:40 UTCJul 13, 00:15 UTC3h 35m
2026-07-12 SWA1155 MDW → SEA Jul 12, 15:10 UTCJul 12, 19:15 UTC4h 5m
2026-07-12 SWA2412 TPA → MDW Jul 12, 11:25 UTCJul 12, 13:50 UTC2h 25m
2026-07-11 SWA1044 LAS → TPA Jul 11, 23:50 UTCJul 12, 03:45 UTC3h 55m
2026-07-11 SWA1044 LAS → TPA Jul 11, 23:46 UTCJul 12, 03:45 UTC3h 59m
2026-07-11 SWA4676 - Jul 11, 21:45 UTCJul 11, 22:40 UTC55m
2026-07-11 SWA4685 LAS → RNO Jul 11, 19:35 UTCJul 11, 20:28 UTC53m
2026-07-11 SWA4685 - Jul 11, 19:35 UTCJul 11, 20:25 UTC50m
2026-07-11 SWA3993 - Jul 11, 16:05 UTCJul 11, 18:05 UTC2h 0m
2026-07-11 SWA3993 - Jul 11, 14:45 UTCJul 11, 16:00 UTC1h 15m
2026-07-11 SWA3391 - Jul 11, 12:00 UTCJul 11, 13:05 UTC1h 5m
2026-07-11 SWA1388 DAL → PNS Jul 11, 01:15 UTCJul 11, 02:30 UTC1h 15m
2026-07-10 SWA1388 DEN → DAL Jul 10, 22:45 UTCJul 11, 00:15 UTC1h 30m
2026-07-10 SWA503 BNA → DEN Jul 10, 19:10 UTCJul 10, 21:25 UTC2h 15m
2026-07-10 SWA3478 - Jul 10, 14:25 UTCJul 10, 17:55 UTC3h 30m
2026-07-10 SWA1704 DEN → SAN Jul 10, 04:45 UTCJul 10, 06:36 UTC1h 51m
2026-07-10 SWA1704 DEN → SAN Jul 10, 04:50 UTCJul 10, 06:40 UTC1h 50m
2026-07-10 SWA3741 SLC → DEN Jul 10, 02:15 UTCJul 10, 03:15 UTC1h 0m
2026-07-10 SWA3741 SLC → DEN Jul 10, 02:15 UTCJul 10, 03:07 UTC52m
2026-07-09 SWA4791 BNA → SLC Jul 9, 22:05 UTCJul 10, 01:20 UTC3h 15m
2026-07-09 SWA3888 STL → BNA Jul 9, 19:40 UTCJul 9, 20:25 UTC45m
2026-07-09 SWA4979 - Jul 9, 17:05 UTCJul 9, 18:25 UTC1h 20m
2026-07-09 SWA4593 - Jul 9, 14:20 UTCJul 9, 16:05 UTC1h 45m
2026-07-09 SWA576 LGA → MCI Jul 9, 10:41 UTCJul 9, 13:10 UTC2h 29m
2026-07-09 SWA4480 DEN → LGA Jul 9, 00:10 UTCJul 9, 03:30 UTC3h 20m
2026-07-08 SWA4061 LGA → HOU Jul 8, 20:15 UTCJul 8, 22:40 UTC2h 25m
2026-07-08 SWA4061 LGA → HOU Jul 8, 20:12 UTCJul 8, 22:44 UTC2h 32m
2026-07-08 SWA143 PHX → SMF Jul 8, 17:35 UTCJul 8, 19:10 UTC1h 35m
2026-07-08 SWA143 PHX → SMF Jul 8, 17:35 UTCJul 8, 19:07 UTC1h 32m
2026-07-08 SWA431 DEN → PHX Jul 8, 15:00 UTCJul 8, 16:25 UTC1h 25m
2026-07-08 SWA1640 DAL → DEN Jul 8, 12:15 UTCJul 8, 13:50 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 N8557Q page for operator, model, and routing details .

Mode-S ABBD47 frequently asked

What is Mode-S code ABBD47?
ABBD47 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8557Q.
Where is Mode-S ABBD47 registered?
Mode-S code ABBD47 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 ABBD47 broadcasting right now?
Mode-S ABBD47 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABBD47, octal 52736507, decimal 11,255,111.
What flights does ABBD47 operate?
Mode-S ABBD47 has broadcast 20 distinct callsigns, including SWA4286, SWA961, SWA935, SWA864, SWA459.