sensors Mode-S transponder

ABC0C1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8565Z · BOEING 737-800 · operated by UMB BANK NA TRUSTEE

Hex
ABC0C1
Octal
52740301
Decimal
11,256,001
Country
US
Tail
N8565Z
Type
B738
Broadcasting now · callsign SWA823 · 35,875 ft
Flights observed
15
Distinct callsigns
8
Country
US
Last broadcast
16h ago

Current position

ABC0C1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABC0C1 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 8 distinct

Callsign Airline Flights Last seen
SWA3887 - 3 2026-04-13
SWA2920 - 3 2026-04-13
SWA2025 - 3 2026-04-13
SWA2861 - 2 2026-04-13
SWA3440 Southwest Airlines 1 2026-04-13
SWA3047 - 1 2026-04-13
SWA2081 - 1 2026-04-14
SWA1086 - 1 2026-04-12

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA2081 - Apr 14, 05:15 UTCApr 14, 06:15 UTC1h 0m
2026-04-13 SWA3440 MDW → LAS Apr 13, 22:55 UTCApr 14, 01:44 UTC2h 49m
2026-04-13 SWA2025 - Apr 13, 19:50 UTCApr 13, 22:10 UTC2h 20m
2026-04-13 SWA2025 - Apr 13, 19:07 UTCApr 13, 21:49 UTC2h 42m
2026-04-13 SWA2025 - Apr 13, 19:15 UTCApr 13, 21:47 UTC2h 32m
2026-04-13 SWA2861 - Apr 13, 16:15 UTCApr 13, 18:35 UTC2h 20m
2026-04-13 SWA2861 - Apr 13, 15:59 UTCApr 13, 18:34 UTC2h 35m
2026-04-13 SWA3887 - Apr 13, 12:20 UTCApr 13, 14:20 UTC2h 0m
2026-04-13 SWA3887 - Apr 13, 11:55 UTCApr 13, 14:20 UTC2h 25m
2026-04-13 SWA3887 - Apr 13, 10:59 UTCApr 13, 14:18 UTC3h 19m
2026-04-13 SWA2920 - Apr 13, 04:20 UTCApr 13, 05:05 UTC45m
2026-04-13 SWA2920 - Apr 13, 04:00 UTCApr 13, 05:06 UTC1h 6m
2026-04-13 SWA2920 - Apr 13, 03:04 UTCApr 13, 04:24 UTC1h 20m
2026-04-13 SWA3047 - Apr 13, 00:55 UTCApr 13, 02:45 UTC1h 50m
2026-04-12 SWA1086 - Apr 12, 17:16 UTCApr 12, 19:10 UTC1h 54m

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 N8565Z page for operator, model, and routing details .

Mode-S ABC0C1 frequently asked

What is Mode-S code ABC0C1?
ABC0C1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8565Z.
Where is Mode-S ABC0C1 registered?
Mode-S code ABC0C1 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 ABC0C1 broadcasting right now?
Yes. Mode-S ABC0C1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABC0C1, octal 52740301, decimal 11,256,001.
What flights does ABC0C1 operate?
Mode-S ABC0C1 has broadcast 8 distinct callsigns, including SWA3887, SWA2920, SWA2025, SWA2861, SWA3440.