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
Broadcasting now · callsign SWA133 · 37,000 ft
Flights observed
12
Distinct callsigns
7
Country
US
Last broadcast
12h ago

Current position

ABEFBA is currently broadcasting. Map zoomed to live position.

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 7 distinct

Callsign Airline Flights Last seen
SWA2161 - 4 2026-04-13
SWA3483 - 3 2026-04-13
SWA4549 - 1 2026-04-12
SWA3389 - 1 2026-04-13
SWA2595 - 1 2026-04-12
SWA1623 - 1 2026-04-13
SWA120 Southwest Airlines 1 2026-04-14

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA120 MCI → BWI Apr 14, 10:30 UTCApr 14, 11:05 UTC35m
2026-04-13 SWA3483 - Apr 13, 22:35 UTCApr 13, 23:45 UTC1h 10m
2026-04-13 SWA3483 - Apr 13, 19:50 UTCApr 13, 21:35 UTC1h 45m
2026-04-13 SWA3483 - Apr 13, 18:11 UTCApr 13, 21:19 UTC3h 8m
2026-04-13 SWA2161 - Apr 13, 16:15 UTCApr 13, 17:00 UTC45m
2026-04-13 SWA2161 - Apr 13, 15:50 UTCApr 13, 17:00 UTC1h 10m
2026-04-13 SWA2161 - Apr 13, 13:15 UTCApr 13, 16:15 UTC3h 0m
2026-04-13 SWA2161 - Apr 13, 11:00 UTCApr 13, 11:55 UTC55m
2026-04-13 SWA1623 - Apr 13, 04:41 UTCApr 13, 05:40 UTC59m
2026-04-13 SWA3389 - Apr 13, 00:20 UTCApr 13, 03:45 UTC3h 25m
2026-04-12 SWA2595 - Apr 12, 19:00 UTCApr 12, 20:15 UTC1h 15m
2026-04-12 SWA4549 - Apr 12, 17:15 UTCApr 12, 17:55 UTC40m

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?
Yes. Mode-S ABEFBA is currently airborne.
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 7 distinct callsigns, including SWA2161, SWA3483, SWA4549, SWA3389, SWA2595.