Apparatus

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sensors Mode-S transponder

ABFAC6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N871HK · operated by SOUTHWEST AIRLINES CO

Hex
ABFAC6
Octal
52775306
Decimal
11,270,854
Country
US
Tail
N871HK
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
621
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ABFAC6.

Country allocation

The ICAO 24-bit address ABFAC6 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
SWA3783 Southwest Airlines 5 2026-06-12
SWA3547 - 5 2026-06-20
SWA1938 Southwest Airlines 5 2026-06-15
SWA532 Southwest Airlines 4 2026-05-05
SWA4238 Southwest Airlines 4 2026-05-26
SWA3977 Southwest Airlines 4 2026-05-26
SWA3703 Southwest Airlines 4 2026-04-14
SWA3439 Southwest Airlines 4 2026-05-18
SWA3098 - 4 2026-07-11
SWA2524 Southwest Airlines 4 2026-05-22
SWA1915 - 4 2026-06-28
SWA942 - 3 2026-06-28
SWA9000 - 3 2026-07-10
SWA508 - 3 2026-07-11
SWA4613 - 3 2026-06-27
SWA4286 Southwest Airlines 3 2026-05-28
SWA4222 Southwest Airlines 3 2026-04-18
SWA3723 Southwest Airlines 3 2026-06-10
SWA3631 - 3 2026-04-13
SWA347 Southwest Airlines 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SWA3184 - Jul 14, 15:30 UTCJul 14, 18:35 UTC3h 5m
2026-07-14 SWA4721 MCO → IND Jul 14, 12:35 UTCJul 14, 14:25 UTC1h 50m
2026-07-14 SWA4508 - Jul 14, 06:25 UTCJul 14, 10:10 UTC3h 45m
2026-07-14 SWA4508 PHX → MCO Jul 14, 06:21 UTCJul 14, 10:15 UTC3h 55m
2026-07-14 SWA3159 ONT → PHX Jul 14, 03:55 UTCJul 14, 04:45 UTC50m
2026-07-14 SWA3159 - Jul 14, 00:55 UTCJul 14, 03:15 UTC2h 20m
2026-07-13 SWA381 OAK → ONT Jul 13, 23:05 UTCJul 14, 00:00 UTC55m
2026-07-13 SWA441 GEG → OAK Jul 13, 19:55 UTCJul 13, 21:45 UTC1h 50m
2026-07-13 SWA441 GEG → OAK Jul 13, 19:53 UTCJul 13, 21:42 UTC1h 50m
2026-07-13 SWA2306 LAS → GEG Jul 13, 16:50 UTCJul 13, 18:35 UTC1h 45m
2026-07-13 SWA4112 ANC → LAS Jul 13, 10:00 UTCJul 13, 15:15 UTC5h 15m
2026-07-13 SWA1575 - Jul 13, 05:20 UTCJul 13, 08:55 UTC3h 35m
2026-07-13 SWA1575 - Jul 13, 04:25 UTCJul 13, 04:40 UTC15m
2026-07-12 SWA3283 PHX → LAS Jul 12, 23:46 UTCJul 13, 00:27 UTC41m
2026-07-12 SWA3283 PHX → LAS Jul 12, 23:50 UTCJul 13, 00:30 UTC40m
2026-07-12 SWA4237 SFO → PHX Jul 12, 20:40 UTCJul 12, 22:20 UTC1h 40m
2026-07-12 SWA2427 - Jul 12, 18:10 UTCJul 12, 18:55 UTC45m
2026-07-12 SWA2427 PHX → LAX Jul 12, 16:05 UTCJul 12, 17:01 UTC55m
2026-07-12 SWA3112 - Jul 12, 03:01 UTCJul 12, 04:35 UTC1h 35m
2026-07-12 SWA3112 SJC → PHX Jul 12, 02:57 UTCJul 12, 04:35 UTC1h 38m
2026-07-12 SWA208 LAS → SJC Jul 12, 00:50 UTCJul 12, 01:50 UTC1h 0m
2026-07-12 SWA208 RSW → CMH Jul 12, 00:47 UTCJul 12, 01:46 UTC59m
2026-07-11 SWA1913 - Jul 11, 18:10 UTCJul 11, 23:35 UTC5h 25m
2026-07-11 SWA3091 - Jul 11, 16:10 UTCJul 11, 16:35 UTC25m
2026-07-11 SWA508 - Jul 11, 06:40 UTCJul 11, 07:00 UTC20m
2026-07-11 SWA508 HNL → OGG Jul 11, 06:37 UTCJul 11, 06:59 UTC22m
2026-07-11 SWA3098 - Jul 11, 05:20 UTCJul 11, 05:35 UTC15m
2026-07-11 SWA3098 OGG → HNL Jul 11, 05:11 UTCJul 11, 05:36 UTC25m
2026-07-11 SWA1933 - Jul 11, 03:35 UTCJul 11, 03:55 UTC20m
2026-07-11 SWA2169 KOA → HNL Jul 11, 01:45 UTCJul 11, 02:15 UTC30m
2026-07-10 SWA561 - Jul 10, 23:50 UTCJul 11, 00:20 UTC30m
2026-07-10 SWA2168 KOA → HNL Jul 10, 21:41 UTCJul 10, 22:13 UTC32m
2026-07-10 SWA2168 - Jul 10, 21:45 UTCJul 10, 22:15 UTC30m
2026-07-10 SWA675 - Jul 10, 20:05 UTCJul 10, 20:30 UTC25m
2026-07-10 SWA675 HNL → KOA Jul 10, 20:00 UTCJul 10, 20:28 UTC28m
2026-07-10 SWA2149 - Jul 10, 18:25 UTCJul 10, 18:50 UTC25m
2026-07-10 SWA1902 - Jul 10, 16:10 UTCJul 10, 16:30 UTC20m
2026-07-10 SWA1902 HNL → ITO Jul 10, 16:07 UTCJul 10, 16:44 UTC37m
2026-07-10 SWA9000 - Jul 10, 07:45 UTCJul 10, 08:00 UTC15m
2026-07-10 SWA9000 - Jul 10, 02:55 UTCJul 10, 03:35 UTC40m
2026-07-10 SWA9000 SJC → HNL Jul 10, 02:52 UTCJul 10, 07:56 UTC5h 4m
2026-07-10 SWA3540 - Jul 10, 00:15 UTCJul 10, 01:15 UTC1h 0m
2026-07-09 SWA2809 - Jul 9, 20:35 UTCJul 9, 22:45 UTC2h 10m
2026-07-09 SWA2809 - Jul 9, 15:30 UTCJul 9, 19:20 UTC3h 50m
2026-07-09 SWA2276 LAS → MDW Jul 9, 07:20 UTCJul 9, 10:20 UTC3h 0m
2026-07-09 SWA3173 - Jul 9, 03:20 UTCJul 9, 04:05 UTC45m
2026-07-08 SWA2681 MCO → PHX Jul 8, 22:05 UTCJul 9, 02:00 UTC3h 55m
2026-07-08 SWA2566 - Jul 8, 18:25 UTCJul 8, 20:50 UTC2h 25m
2026-07-08 SWA3855 - Jul 8, 14:50 UTCJul 8, 17:10 UTC2h 20m
2026-07-08 SWA3562 BWI → MCO Jul 8, 11:45 UTCJul 8, 13:35 UTC1h 50m

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 N871HK page for operator, model, and routing details .

Mode-S ABFAC6 frequently asked

What is Mode-S code ABFAC6?
ABFAC6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N871HK.
Where is Mode-S ABFAC6 registered?
Mode-S code ABFAC6 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 ABFAC6 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFAC6, octal 52775306, decimal 11,270,854.
What flights does ABFAC6 operate?
Mode-S ABFAC6 has broadcast 20 distinct callsigns, including SWA3783, SWA3547, SWA1938, SWA532, SWA4238.