Apparatus

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sensors Mode-S transponder

A0667B

ICAO 24-bit transponder address · allocated to United States

Hex
A0667B
Octal
50063173
Decimal
10,511,995
Country
US
No current signal · last broadcast 9d ago
Flights observed
79
Distinct callsigns
3
Country
US
Last broadcast
9d ago

Last known position

Most recent position reported by Mode-S A0667B.

Country allocation

The ICAO 24-bit address A0667B 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 3 distinct

Callsign Airline Flights Last seen
N125CD - 60 2026-07-21
LN125CD - 18 2026-07-25
LM125CD - 1 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 LN125CD - Jul 25, 11:35 UTCJul 25, 13:05 UTC1h 30m
2026-07-25 LN125CD - Jul 25, 10:50 UTCJul 25, 11:20 UTC30m
2026-07-25 LN125CD - Jul 25, 05:10 UTCJul 25, 05:40 UTC30m
2026-07-25 LN125CD - Jul 25, 02:30 UTCJul 25, 04:10 UTC1h 40m
2026-07-21 N125CD LUK → PVU Jul 21, 15:40 UTCJul 21, 19:25 UTC3h 45m
2026-07-21 LN125CD - Jul 21, 11:05 UTCJul 21, 15:00 UTC3h 55m
2026-07-21 LN125CD PVU → LAS Jul 21, 09:35 UTCJul 21, 10:30 UTC55m
2026-07-17 N125CD - Jul 17, 19:05 UTCJul 17, 20:25 UTC1h 20m
2026-07-17 N125CD PVU → BUR Jul 17, 13:35 UTCJul 17, 15:10 UTC1h 35m
2026-07-12 N125CD - Jul 12, 04:35 UTCJul 12, 05:45 UTC1h 10m
2026-07-12 N125CD - Jul 12, 02:50 UTCJul 12, 03:45 UTC55m
2026-07-12 N125CD - Jul 12, 00:05 UTCJul 12, 01:10 UTC1h 5m
2026-07-07 N125CD - Jul 7, 18:55 UTCJul 7, 19:05 UTC10m
2026-07-07 LN125CD - Jul 7, 17:30 UTCJul 7, 18:50 UTC1h 20m
2026-07-07 LM125CD - Jul 7, 13:05 UTCJul 7, 14:10 UTC1h 5m
2026-07-07 N125CD PVU → SLC Jul 7, 12:00 UTCJul 7, 12:20 UTC20m
2026-07-01 N125CD - Jul 1, 12:45 UTCJul 1, 14:15 UTC1h 30m
2026-07-01 LN125CD - Jul 1, 09:00 UTCJul 1, 11:55 UTC2h 55m
2026-07-01 LN125CD - Jul 1, 05:20 UTCJul 1, 08:25 UTC3h 5m
2026-06-29 N125CD - Jun 29, 07:09 UTCJun 29, 07:25 UTC15m
2026-06-29 N125CD LAS → SLC Jun 29, 05:54 UTCJun 29, 06:50 UTC55m
2026-06-29 N125CD - Jun 29, 01:34 UTCJun 29, 02:50 UTC1h 15m
2026-06-29 N125CD - Jun 29, 00:39 UTCJun 29, 00:49 UTC10m
2026-06-28 N125CD - Jun 28, 05:45 UTCJun 28, 07:44 UTC2h 0m
2026-06-28 N125CD - Jun 28, 01:40 UTCJun 28, 02:54 UTC1h 15m
2026-06-28 N125CD - Jun 28, 00:25 UTCJun 28, 00:39 UTC15m
2026-06-26 N125CD - Jun 26, 22:55 UTCJun 27, 00:10 UTC1h 15m
2026-06-26 N125CD - Jun 26, 22:10 UTCJun 26, 22:29 UTC20m
2026-06-26 N125CD - Jun 26, 16:14 UTCJun 26, 16:39 UTC25m
2026-06-26 N125CD PVU → PHX Jun 26, 13:45 UTCJun 26, 14:59 UTC1h 15m
2026-06-21 N125CD - Jun 21, 03:40 UTCJun 21, 04:54 UTC1h 15m
2026-06-21 LN125CD - Jun 21, 01:19 UTCJun 21, 03:00 UTC1h 40m
2026-06-20 LN125CD - Jun 20, 19:19 UTCJun 20, 20:45 UTC1h 25m
2026-06-20 LN125CD PVU → BUR Jun 20, 16:39 UTCJun 20, 18:24 UTC1h 45m
2026-06-15 N125CD - Jun 15, 00:35 UTCJun 15, 01:50 UTC1h 15m
2026-06-14 N125CD - Jun 14, 23:05 UTCJun 14, 23:50 UTC44m
2026-06-14 N125CD - Jun 14, 21:30 UTCJun 14, 22:30 UTC1h 0m
2026-06-12 N125CD - Jun 12, 22:10 UTCJun 12, 22:20 UTC10m
2026-06-12 N125CD - Jun 12, 14:01 UTCJun 12, 14:05 UTC5m
2026-06-09 LN125CD - Jun 9, 02:20 UTCJun 9, 03:20 UTC1h 0m
2026-06-08 LN125CD - Jun 8, 22:45 UTCJun 8, 23:10 UTC25m
2026-06-08 LN125CD PVU → SLC Jun 8, 21:25 UTCJun 8, 21:40 UTC15m
2026-06-07 N125CD SLC → PVU Jun 7, 18:30 UTCJun 7, 18:45 UTC15m
2026-06-07 N125CD - Jun 7, 16:10 UTCJun 7, 17:20 UTC1h 10m
2026-06-07 N125CD - Jun 7, 10:45 UTCJun 7, 11:45 UTC1h 0m
2026-06-07 N125CD PVU → BUR Jun 7, 08:15 UTCJun 7, 09:55 UTC1h 40m
2026-06-05 N125CD PHX → PVU Jun 5, 11:15 UTCJun 5, 12:30 UTC1h 15m
2026-06-05 N125CD - Jun 5, 07:40 UTCJun 5, 10:10 UTC2h 30m
2026-06-05 N125CD PVU → BFI Jun 5, 00:20 UTCJun 5, 02:25 UTC2h 5m
2026-05-25 N125CD - May 25, 06:25 UTCMay 25, 07:45 UTC1h 20m

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.

Mode-S A0667B frequently asked

What is Mode-S code A0667B?
A0667B is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A0667B registered?
Mode-S code A0667B 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 A0667B broadcasting right now?
No active broadcast right now. Last signal was 9d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0667B, octal 50063173, decimal 10,511,995.
What flights does A0667B operate?
Mode-S A0667B has broadcast 3 distinct callsigns, including N125CD, LN125CD, LM125CD.