Apparatus

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sensors Mode-S transponder

ABEF79

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8684F · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABEF79
Octal
52767571
Decimal
11,267,961
Country
US
Tail
N8684F
Type
B738
No current signal · last broadcast Jul 26, 19:15 UTC
Flights observed
749
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:15 UTC

Last known position

Most recent position reported by Mode-S ABEF79.

Country allocation

The ICAO 24-bit address ABEF79 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
SWA2654 - 5 2026-07-13
SWA742 - 4 2026-07-16
SWA523 Southwest Airlines 4 2026-06-13
SWA507 Southwest Airlines 4 2026-06-09
SWA4470 Southwest Airlines 4 2026-06-12
SWA4061 Southwest Airlines 4 2026-06-20
SWA4050 Southwest Airlines 4 2026-05-19
SWA3895 Southwest Airlines 4 2026-05-17
SWA3200 Southwest Airlines 4 2026-07-21
SWA1991 - 4 2026-07-16
SWA1426 Southwest Airlines 4 2026-04-17
SWA888 Southwest Airlines 3 2026-05-30
SWA606 - 3 2026-07-05
SWA4372 - 3 2026-07-16
SWA430 - 3 2026-07-16
SWA4241 - 3 2026-07-06
SWA4152 - 3 2026-07-07
SWA4039 Southwest Airlines 3 2026-05-26
SWA3994 Southwest Airlines 3 2026-05-26
SWA3967 Southwest Airlines 3 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA3116 OAK → LAS Jul 26, 16:00 UTCJul 26, 19:15 UTC3h 15m
2026-07-26 SWA2764 TUL → DAL Jul 26, 12:55 UTCJul 26, 14:15 UTC1h 20m
2026-07-26 SWA2764 TUL → DAL Jul 26, 12:55 UTCJul 26, 14:36 UTC1h 41m
2026-07-26 SWA1193 HOU → OAK Jul 26, 09:35 UTCJul 26, 11:10 UTC1h 35m
2026-07-26 SWA1193 HOU → OAK Jul 26, 09:33 UTCJul 26, 11:09 UTC1h 36m
2026-07-25 SWA3687 PDX → SMF Jul 25, 23:30 UTCJul 26, 01:40 UTC2h 10m
2026-07-25 SWA1297 SNA → SJC Jul 25, 20:35 UTCJul 25, 22:35 UTC2h 0m
2026-07-25 SWA1297 SNA → SJC Jul 25, 20:30 UTCJul 25, 22:23 UTC1h 53m
2026-07-25 SWA374 SJC → LAX Jul 25, 17:25 UTCJul 25, 19:30 UTC2h 5m
2026-07-25 SWA2470 LAS → OAK Jul 25, 13:50 UTCJul 25, 16:15 UTC2h 25m
2026-07-25 SWA3139 BNA → LGA Jul 25, 11:40 UTCJul 25, 12:30 UTC50m
2026-07-25 SWA4912 LAS → MCO Jul 25, 03:25 UTCJul 25, 04:20 UTC55m
2026-07-25 SWA241 SAN → PHX Jul 25, 01:15 UTCJul 25, 02:35 UTC1h 20m
2026-07-25 SWA241 SAN → PHX Jul 25, 01:15 UTCJul 25, 02:28 UTC1h 13m
2026-07-24 SWA1263 SAN → SJC Jul 24, 22:35 UTCJul 25, 00:15 UTC1h 40m
2026-07-24 SWA1263 SAN → SJC Jul 24, 18:25 UTCJul 24, 21:05 UTC2h 40m
2026-07-24 SWA3937 MSY → MCI Jul 24, 13:50 UTCJul 24, 17:10 UTC3h 20m
2026-07-24 SWA3937 MSY → MCI Jul 24, 11:15 UTCJul 24, 12:35 UTC1h 20m
2026-07-24 SWA255 DCA → PVD Jul 24, 03:35 UTCJul 24, 05:25 UTC1h 50m
2026-07-24 SWA255 DCA → PVD Jul 24, 00:00 UTCJul 24, 02:40 UTC2h 40m
2026-07-23 SWA255 DCA → PVD Jul 23, 22:00 UTCJul 23, 22:45 UTC45m
2026-07-23 SWA4665 SEA → SJC Jul 23, 18:09 UTCJul 23, 20:17 UTC2h 8m
2026-07-23 SWA4665 SEA → SJC Jul 23, 18:10 UTCJul 23, 20:20 UTC2h 10m
2026-07-23 SWA4114 PHX → BNA Jul 23, 15:15 UTCJul 23, 16:50 UTC1h 35m
2026-07-23 SWA2465 AUS → ELP Jul 23, 12:00 UTCJul 23, 13:45 UTC1h 45m
2026-07-23 SWA4684 DEN → SFO Jul 23, 01:35 UTCJul 23, 03:25 UTC1h 50m
2026-07-22 SWA1111 BUR → OAK Jul 22, 22:25 UTCJul 23, 00:15 UTC1h 50m
2026-07-22 SWA1072 DEN → BOS Jul 22, 19:00 UTCJul 22, 21:15 UTC2h 15m
2026-07-21 SWA1678 SJC → SAN Jul 21, 16:00 UTCJul 21, 17:40 UTC1h 40m
2026-07-21 SWA1678 SJC → SAN Jul 21, 15:59 UTCJul 21, 17:41 UTC1h 42m
2026-07-21 SWA2959 LAX → HOU Jul 21, 13:45 UTCJul 21, 14:40 UTC55m
2026-07-21 SWA2959 LAX → HOU Jul 21, 13:44 UTCJul 21, 14:38 UTC54m
2026-07-21 SWA3200 DCA → BNA Jul 21, 04:05 UTCJul 21, 07:10 UTC3h 5m
2026-07-20 SWA547 MDW → BDL Jul 20, 23:30 UTCJul 21, 02:15 UTC2h 44m
2026-07-20 SWA547 MDW → BDL Jul 20, 23:25 UTCJul 21, 02:32 UTC3h 7m
2026-07-20 SWA5047 BWI → ALB Jul 20, 20:35 UTCJul 20, 22:05 UTC1h 30m
2026-07-20 SWA2354 DEN → DAL Jul 20, 18:05 UTCJul 20, 19:40 UTC1h 35m
2026-07-20 SWA3055 SJC → LAS Jul 20, 03:00 UTCJul 20, 04:55 UTC1h 55m
2026-07-20 SWA3055 SJC → LAS Jul 20, 02:59 UTCJul 20, 04:54 UTC1h 55m
2026-07-20 SWA4485 AUS → SMF Jul 20, 00:40 UTCJul 20, 01:55 UTC1h 15m
2026-07-19 SWA4647 - Jul 19, 22:35 UTCJul 19, 23:25 UTC50m
2026-07-19 SWA1063 LAS → OAK Jul 19, 17:45 UTCJul 19, 21:05 UTC3h 20m
2026-07-19 SWA1063 LAS → OAK Jul 19, 15:10 UTCJul 19, 16:30 UTC1h 20m
2026-07-19 SWA3463 RSW → BWI Jul 19, 10:50 UTCJul 19, 12:45 UTC1h 55m
2026-07-19 SWA3463 RSW → BWI Jul 19, 10:49 UTCJul 19, 12:46 UTC1h 57m
2026-07-19 SWA4831 STL → RSW Jul 19, 00:00 UTCJul 19, 02:15 UTC2h 15m
2026-07-18 SWA2003 OAK → ONT Jul 18, 21:50 UTCJul 18, 23:00 UTC1h 10m
2026-07-18 SWA2003 OAK → ONT Jul 18, 21:46 UTCJul 18, 22:55 UTC1h 9m
2026-07-18 SWA3553 AUS → DAL Jul 18, 18:05 UTCJul 18, 20:25 UTC2h 20m
2026-07-18 SWA3553 AUS → DAL Jul 18, 18:05 UTCJul 18, 20:25 UTC2h 20m

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 N8684F page for operator, model, and routing details .

Mode-S ABEF79 frequently asked

What is Mode-S code ABEF79?
ABEF79 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8684F.
Where is Mode-S ABEF79 registered?
Mode-S code ABEF79 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 ABEF79 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABEF79, octal 52767571, decimal 11,267,961.
What flights does ABEF79 operate?
Mode-S ABEF79 has broadcast 20 distinct callsigns, including SWA2654, SWA742, SWA523, SWA507, SWA4470.