Apparatus

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sensors Mode-S transponder

ABEFBA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8686A · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABEFBA
Octal
52767672
Decimal
11,268,026
Country
US
Tail
N8686A
Type
B738
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
749
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S ABEFBA.

Country allocation

The ICAO 24-bit address ABEFBA 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
SWA3579 - 6 2026-07-10
SWA1599 Southwest Airlines 6 2026-07-24
SWA785 Southwest Airlines 5 2026-04-19
SWA3904 Southwest Airlines 5 2026-06-12
SWA120 Southwest Airlines 5 2026-04-14
SWA3892 Southwest Airlines 4 2026-05-26
SWA3413 Southwest Airlines 4 2026-06-12
SWA2161 - 4 2026-04-13
SWA1882 - 4 2026-07-10
SWA1123 - 4 2026-07-11
SWA822 - 3 2026-06-27
SWA770 - 3 2026-07-16
SWA4914 - 3 2026-07-13
SWA4594 Southwest Airlines 3 2026-05-15
SWA4529 - 3 2026-07-09
SWA4454 Southwest Airlines 3 2026-06-17
SWA4381 Southwest Airlines 3 2026-07-20
SWA3890 Southwest Airlines 3 2026-05-26
SWA3751 - 3 2026-07-07
SWA3703 Southwest Airlines 3 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SWA1999 PUJ → MDW Jul 26, 21:15 UTCJul 26, 22:30 UTC1h 15m
2026-07-26 SWA841 ABQ → LAX Jul 26, 15:55 UTCJul 26, 17:30 UTC1h 35m
2026-07-26 SWA841 ABQ → LAX Jul 26, 15:51 UTCJul 26, 19:15 UTC3h 24m
2026-07-26 SWA396 SLC → OAK Jul 26, 11:10 UTCJul 26, 13:15 UTC2h 5m
2026-07-26 SWA4825 MCO → MEM Jul 26, 00:25 UTCJul 26, 02:35 UTC2h 10m
2026-07-25 SWA1313 OAK → LAX Jul 25, 21:40 UTCJul 25, 23:25 UTC1h 45m
2026-07-25 SWA1313 OAK → LAX Jul 25, 21:35 UTCJul 25, 23:24 UTC1h 50m
2026-07-25 SWA1313 OAK → LAX Jul 25, 19:45 UTCJul 25, 20:45 UTC1h 0m
2026-07-25 SWA2626 LAX → OAK Jul 25, 16:55 UTCJul 25, 18:25 UTC1h 30m
2026-07-25 SWA2626 LAX → OAK Jul 25, 16:54 UTCJul 25, 18:20 UTC1h 26m
2026-07-25 SWA3336 LAS → SFO Jul 25, 14:15 UTCJul 25, 15:40 UTC1h 25m
2026-07-25 SWA1778 LGA → BNA Jul 25, 10:05 UTCJul 25, 12:35 UTC2h 30m
2026-07-25 SWA2193 SNA → DEN Jul 25, 02:00 UTCJul 25, 04:10 UTC2h 10m
2026-07-24 SWA1599 SEA → OAK Jul 24, 22:30 UTCJul 25, 00:15 UTC1h 45m
2026-07-24 SWA1599 SEA → OAK Jul 24, 20:20 UTCJul 24, 21:30 UTC1h 10m
2026-07-24 SWA1327 MCO → PVD Jul 24, 16:30 UTCJul 24, 19:05 UTC2h 35m
2026-07-24 SWA1327 MCO → PVD Jul 24, 16:29 UTCJul 24, 19:01 UTC2h 32m
2026-07-24 SWA4274 HOU → ELP Jul 24, 12:15 UTCJul 24, 15:25 UTC3h 10m
2026-07-24 SWA4274 HOU → ELP Jul 24, 12:13 UTCJul 24, 15:21 UTC3h 9m
2026-07-24 SWA4226 OAK → BUR Jul 24, 06:40 UTCJul 24, 07:40 UTC1h 0m
2026-07-24 SWA976 DEN → MDW Jul 24, 00:00 UTCJul 24, 04:30 UTC4h 30m
2026-07-23 SWA976 DEN → MDW Jul 23, 21:20 UTCJul 23, 22:40 UTC1h 20m
2026-07-23 SWA1004 STL → LAS Jul 23, 19:10 UTCJul 23, 20:15 UTC1h 5m
2026-07-23 SWA1004 STL → LAS Jul 23, 19:09 UTCJul 23, 20:06 UTC57m
2026-07-23 SWA4614 PHX → CVG Jul 23, 16:15 UTCJul 23, 17:50 UTC1h 35m
2026-07-23 SWA4614 PHX → CVG Jul 23, 16:13 UTCJul 23, 17:51 UTC1h 38m
2026-07-23 SWA4501 SMF → SNA Jul 23, 13:10 UTCJul 23, 15:10 UTC2h 0m
2026-07-23 SWA4501 SMF → SNA Jul 23, 13:05 UTCJul 23, 15:07 UTC2h 2m
2026-07-23 SWA4663 - Jul 23, 10:05 UTCJul 23, 11:35 UTC1h 30m
2026-07-23 SWA3964 SAN → OAK Jul 23, 05:10 UTCJul 23, 06:30 UTC1h 20m
2026-07-23 SWA3964 SAN → OAK Jul 23, 05:05 UTCJul 23, 06:26 UTC1h 21m
2026-07-23 SWA754 STL → MCI Jul 23, 01:20 UTCJul 23, 04:05 UTC2h 45m
2026-07-23 SWA754 STL → MCI Jul 23, 01:20 UTCJul 23, 04:02 UTC2h 43m
2026-07-22 SWA2082 SJC → GEG Jul 22, 22:50 UTCJul 22, 23:55 UTC1h 5m
2026-07-22 SWA4609 BNA → MKE Jul 22, 17:10 UTCJul 22, 19:10 UTC2h 0m
2026-07-22 SWA1005 BUR → SMF Jul 22, 14:10 UTCJul 22, 16:05 UTC1h 55m
2026-07-22 SWA2616 SJC → LAS Jul 22, 11:40 UTCJul 22, 13:15 UTC1h 35m
2026-07-22 SWA2253 DEN → SNA Jul 22, 02:34 UTCJul 22, 05:36 UTC3h 3m
2026-07-22 SWA2253 DEN → SNA Jul 22, 02:35 UTCJul 22, 05:25 UTC2h 50m
2026-07-21 SWA3497 STL → MCI Jul 21, 23:15 UTCJul 22, 01:15 UTC2h 0m
2026-07-21 SWA897 ONT → SJC Jul 21, 21:10 UTCJul 21, 22:00 UTC50m
2026-07-21 SWA897 ONT → SJC Jul 21, 21:09 UTCJul 21, 21:55 UTC46m
2026-07-21 SWA359 ABQ → PHX Jul 21, 18:52 UTCJul 21, 19:45 UTC53m
2026-07-21 SWA2175 - Jul 21, 16:45 UTCJul 21, 17:55 UTC1h 10m
2026-07-21 SWA1182 BWI → BOS Jul 21, 11:45 UTCJul 21, 15:00 UTC3h 15m
2026-07-21 SWA578 MDW → LGA Jul 21, 04:55 UTCJul 21, 06:00 UTC1h 5m
2026-07-21 SWA578 MDW → LGA Jul 21, 04:50 UTCJul 21, 05:58 UTC1h 8m
2026-07-21 SWA3363 DCA → PVD Jul 21, 01:55 UTCJul 21, 03:00 UTC1h 5m
2026-07-20 SWA4381 OAK → LAS Jul 20, 23:45 UTCJul 21, 01:00 UTC1h 15m
2026-07-20 SWA4381 OAK → LAS Jul 20, 22:20 UTCJul 21, 00:59 UTC2h 39m

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 N8686A page for operator, model, and routing details .

Mode-S ABEFBA frequently asked

What is Mode-S code ABEFBA?
ABEFBA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8686A.
Where is Mode-S ABEFBA registered?
Mode-S code ABEFBA 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 ABEFBA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABEFBA, octal 52767672, decimal 11,268,026.
What flights does ABEFBA operate?
Mode-S ABEFBA has broadcast 20 distinct callsigns, including SWA3579, SWA1599, SWA785, SWA3904, SWA120.