sensors Mode-S transponder

ABC3C6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8570W · BOEING 737-800 · operated by SOUTHWEST AIRLINES CO

Hex
ABC3C6
Octal
52741706
Decimal
11,256,774
Country
US
Tail
N8570W
Type
B738
No current signal · last broadcast 17h ago
Flights observed
16
Distinct callsigns
7
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S ABC3C6.

Country allocation

The ICAO 24-bit address ABC3C6 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
SWA256 - 3 2026-04-13
SWA1463 - 3 2026-04-13
SWA872 Southwest Airlines 2 2026-04-13
SWA3817 - 2 2026-04-12
SWA3802 - 2 2026-04-13
SWA3111 - 2 2026-04-14
SWA3036 - 2 2026-04-13

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 SWA3111 LAS → ONT Apr 14, 05:24 UTCApr 14, 06:04 UTC40m
2026-04-14 SWA3111 LAS → ONT Apr 14, 05:35 UTCApr 14, 06:06 UTC31m
2026-04-13 SWA3802 - Apr 13, 23:35 UTCApr 13, 23:45 UTC10m
2026-04-13 SWA3802 - Apr 13, 20:17 UTCApr 13, 23:18 UTC3h 1m
2026-04-13 SWA1463 - Apr 13, 19:50 UTCApr 13, 20:00 UTC10m
2026-04-13 SWA1463 - Apr 13, 16:30 UTCApr 13, 20:12 UTC3h 42m
2026-04-13 SWA1463 BNA → SDF Apr 13, 14:45 UTCApr 13, 15:20 UTC35m
2026-04-13 SWA256 - Apr 13, 12:20 UTCApr 13, 13:15 UTC55m
2026-04-13 SWA256 - Apr 13, 11:55 UTCApr 13, 13:15 UTC1h 20m
2026-04-13 SWA256 - Apr 13, 11:40 UTCApr 13, 12:15 UTC35m
2026-04-13 SWA3036 - Apr 13, 04:20 UTCApr 13, 05:40 UTC1h 20m
2026-04-13 SWA3036 - Apr 13, 03:23 UTCApr 13, 04:50 UTC1h 27m
2026-04-13 SWA872 MDW → RDU Apr 13, 00:36 UTCApr 13, 03:04 UTC2h 28m
2026-04-13 SWA872 MDW → RDU Apr 13, 01:03 UTCApr 13, 03:17 UTC2h 14m
2026-04-12 SWA3817 - Apr 12, 19:55 UTCApr 12, 20:00 UTC5m
2026-04-12 SWA3817 - Apr 12, 18:07 UTCApr 12, 19:37 UTC1h 30m

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 N8570W page for operator, model, and routing details .

Mode-S ABC3C6 frequently asked

What is Mode-S code ABC3C6?
ABC3C6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8570W.
Where is Mode-S ABC3C6 registered?
Mode-S code ABC3C6 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 ABC3C6 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABC3C6, octal 52741706, decimal 11,256,774.
What flights does ABC3C6 operate?
Mode-S ABC3C6 has broadcast 7 distinct callsigns, including SWA256, SWA1463, SWA872, SWA3817, SWA3802.