Apparatus

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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
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
674
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

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
SWA2331 Southwest Airlines 4 2026-07-23
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
SWA3161 Southwest Airlines 3 2026-07-21
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA4899 MCO → BNA Jul 26, 20:05 UTCJul 26, 21:45 UTC1h 40m
2026-07-26 SWA4673 SJC → SEA Jul 26, 17:55 UTCJul 26, 18:55 UTC1h 0m
2026-07-26 SWA1489 LAX → OAK Jul 26, 15:35 UTCJul 26, 16:45 UTC1h 10m
2026-07-26 SWA1489 LAX → OAK Jul 26, 15:34 UTCJul 26, 16:44 UTC1h 10m
2026-07-26 SWA4344 LAS → SFO Jul 26, 12:55 UTCJul 26, 14:10 UTC1h 15m
2026-07-26 SWA1591 SNA → OAK Jul 26, 10:05 UTCJul 26, 11:30 UTC1h 25m
2026-07-26 SWA3585 - Jul 26, 01:25 UTCJul 26, 03:30 UTC2h 5m
2026-07-25 SWA1828 IAH → MDW Jul 25, 23:35 UTCJul 26, 00:35 UTC1h 0m
2026-07-25 SWA1828 IAH → MDW Jul 25, 19:35 UTCJul 25, 22:15 UTC2h 40m
2026-07-25 SWA2965 BWI → DEN Jul 25, 16:40 UTCJul 25, 18:10 UTC1h 30m
2026-07-25 SWA2160 STL → MIA Jul 25, 13:35 UTCJul 25, 15:30 UTC1h 55m
2026-07-25 SWA2160 STL → MIA Jul 25, 13:35 UTCJul 25, 15:26 UTC1h 51m
2026-07-25 SWA1167 SJC → BUR Jul 25, 10:55 UTCJul 25, 11:55 UTC1h 0m
2026-07-25 SWA4518 DCA → OKC Jul 25, 03:35 UTCJul 25, 04:25 UTC50m
2026-07-25 SWA4518 DCA → OKC Jul 25, 03:30 UTCJul 25, 04:20 UTC50m
2026-07-24 SWA2597 SJC → LAX Jul 24, 22:25 UTCJul 25, 00:30 UTC2h 5m
2026-07-24 SWA3220 DEN → SNA Jul 24, 17:29 UTCJul 24, 20:57 UTC3h 29m
2026-07-24 SWA3220 DEN → SNA Jul 24, 17:30 UTCJul 24, 21:00 UTC3h 30m
2026-07-24 SWA4901 ORF → BWI Jul 24, 14:45 UTCJul 24, 16:15 UTC1h 30m
2026-07-24 SWA768 SJC → AUS Jul 24, 00:45 UTCJul 24, 02:00 UTC1h 15m
2026-07-23 SWA768 SJC → AUS Jul 23, 23:05 UTCJul 23, 23:50 UTC45m
2026-07-23 SWA1247 LAS → OAK Jul 23, 20:50 UTCJul 23, 21:45 UTC55m
2026-07-23 SWA1247 LAS → OAK Jul 23, 20:49 UTCJul 23, 21:51 UTC1h 2m
2026-07-23 SWA1247 LAS → OAK Jul 23, 19:05 UTCJul 23, 19:45 UTC40m
2026-07-23 SWA3513 - Jul 23, 13:50 UTCJul 23, 17:15 UTC3h 25m
2026-07-23 SWA2331 ONT → DEN Jul 23, 05:25 UTCJul 23, 06:10 UTC45m
2026-07-23 SWA2331 ONT → DEN Jul 23, 05:23 UTCJul 23, 06:05 UTC42m
2026-07-22 SWA976 DEN → MDW Jul 22, 23:50 UTCJul 23, 04:10 UTC4h 20m
2026-07-22 SWA1159 MSY → LAX Jul 22, 21:30 UTCJul 22, 22:30 UTC1h 0m
2026-07-22 SWA1159 MSY → LAX Jul 22, 21:25 UTCJul 22, 22:27 UTC1h 2m
2026-07-22 SWA1159 MSY → LAX Jul 22, 18:10 UTCJul 22, 19:40 UTC1h 30m
2026-07-22 SWA1517 MCO → MDW Jul 22, 15:15 UTCJul 22, 17:30 UTC2h 15m
2026-07-22 SWA1517 MCO → MDW Jul 22, 12:15 UTCJul 22, 13:50 UTC1h 35m
2026-07-22 SWA3199 LAX → SJC Jul 22, 03:00 UTCJul 22, 05:05 UTC2h 5m
2026-07-22 SWA3199 LAX → SJC Jul 22, 02:56 UTCJul 22, 05:04 UTC2h 9m
2026-07-22 SWA4708 - Jul 22, 00:00 UTCJul 22, 02:05 UTC2h 5m
2026-07-21 SWA3496 DEN → MCO Jul 21, 20:35 UTCJul 21, 22:35 UTC2h 0m
2026-07-21 SWA4648 MDW → MSY Jul 21, 15:35 UTCJul 21, 19:10 UTC3h 35m
2026-07-21 SWA1598 STL → BOS Jul 21, 12:35 UTCJul 21, 14:30 UTC1h 55m
2026-07-21 SWA3642 OAK → OGG Jul 21, 02:47 UTCJul 21, 04:55 UTC2h 8m
2026-07-21 SWA3642 OAK → OGG Jul 21, 02:50 UTCJul 21, 04:55 UTC2h 5m
2026-07-21 SWA3161 SAN → OAK Jul 21, 00:55 UTCJul 21, 01:45 UTC50m
2026-07-21 SWA3161 SAN → OAK Jul 21, 00:54 UTCJul 21, 01:42 UTC48m
2026-07-20 SWA3161 SAN → OAK Jul 20, 21:20 UTCJul 20, 23:50 UTC2h 30m
2026-07-20 SWA4570 LGA → DAL Jul 20, 17:15 UTCJul 20, 20:10 UTC2h 55m
2026-07-20 SWA4886 SJC → OGG Jul 20, 12:35 UTCJul 20, 15:45 UTC3h 10m
2026-07-20 SWA1225 PHX → SJC Jul 20, 04:30 UTCJul 20, 06:35 UTC2h 5m
2026-07-20 SWA193 MKE → BWI Jul 20, 03:00 UTCJul 20, 03:45 UTC45m
2026-07-19 SWA193 MKE → BWI Jul 19, 21:00 UTCJul 20, 01:35 UTC4h 35m
2026-07-19 SWA8803 ATL → CMH Jul 19, 18:30 UTCJul 19, 19:40 UTC1h 10m

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?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
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, SWA2331, SWA961, SWA935, SWA864.