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
Broadcasting now · callsign SWA3176 · 29,450 ft
Flights observed
16
Distinct callsigns
10
Country
US
Last broadcast
13h ago

Current position

ABEF79 is currently broadcasting. Map zoomed to live position.

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 10 distinct

Callsign Airline Flights Last seen
SWA4152 - 2 2026-04-13
SWA3932 - 2 2026-04-13
SWA3714 - 2 2026-04-13
SWA3662 - 2 2026-04-13
SWA3467 Southwest Airlines 2 2026-04-13
SWA1328 - 2 2026-04-13
SWA4313 - 1 2026-04-12
SWA3309 - 1 2026-04-13
SWA2550 - 1 2026-04-13
SWA2222 - 1 2026-04-14

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA2222 - Apr 14, 09:50 UTCApr 14, 11:05 UTC1h 15m
2026-04-13 SWA3309 - Apr 13, 21:51 UTCApr 14, 00:05 UTC2h 14m
2026-04-13 SWA3467 SAT → LAS Apr 13, 19:50 UTCApr 13, 20:45 UTC55m
2026-04-13 SWA3467 SAT → LAS Apr 13, 19:37 UTCApr 13, 20:44 UTC1h 7m
2026-04-13 SWA1328 - Apr 13, 17:12 UTCApr 13, 18:33 UTC1h 21m
2026-04-13 SWA1328 - Apr 13, 16:54 UTCApr 13, 18:34 UTC1h 40m
2026-04-13 SWA2550 PHX → DEN Apr 13, 14:30 UTCApr 13, 15:44 UTC1h 14m
2026-04-13 SWA4152 - Apr 13, 06:04 UTCApr 13, 06:57 UTC53m
2026-04-13 SWA4152 LAS → PHX Apr 13, 06:55 UTCApr 13, 07:38 UTC43m
2026-04-13 SWA3714 - Apr 13, 04:20 UTCApr 13, 05:30 UTC1h 10m
2026-04-13 SWA3714 - Apr 13, 03:46 UTCApr 13, 05:03 UTC1h 17m
2026-04-13 SWA3662 - Apr 13, 02:55 UTCApr 13, 03:15 UTC20m
2026-04-13 SWA3662 - Apr 13, 01:38 UTCApr 13, 02:40 UTC1h 2m
2026-04-13 SWA3932 - Apr 13, 00:20 UTCApr 13, 01:15 UTC55m
2026-04-12 SWA3932 - Apr 12, 23:55 UTCApr 13, 01:15 UTC1h 20m
2026-04-12 SWA4313 - Apr 12, 18:10 UTCApr 12, 20:15 UTC2h 5m

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?
Yes. Mode-S ABEF79 is currently airborne.
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 10 distinct callsigns, including SWA4152, SWA3932, SWA3714, SWA3662, SWA3467.