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sensors Mode-S transponder

A4C6EC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N407CZ · BELL 407 · operated by CLASSIC NA LLC

Hex
A4C6EC
Octal
51143354
Decimal
10,798,828
Country
US
Tail
N407CZ
Type
B407
No current signal · last broadcast 3d ago
Flights observed
46
Distinct callsigns
1
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A4C6EC.

Country allocation

The ICAO 24-bit address A4C6EC 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 1 distinct

Callsign Airline Flights Last seen
N407CZ - 45 2026-07-11

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-07-11 N407CZ - Jul 11, 05:31 UTCJul 11, 05:45 UTC15m
2026-07-11 N407CZ - Jul 11, 04:01 UTCJul 11, 04:15 UTC15m
2026-07-04 N407CZ - Jul 4, 03:55 UTCJul 4, 04:10 UTC15m
2026-07-04 N407CZ - Jul 4, 02:50 UTCJul 4, 03:00 UTC10m
2026-07-01 N407CZ - Jul 1, 07:40 UTCJul 1, 08:10 UTC30m
2026-07-01 N407CZ - Jul 1, 06:40 UTCJul 1, 06:55 UTC15m
2026-07-01 N407CZ - Jul 1, 05:45 UTCJul 1, 06:05 UTC20m
2026-06-07 N407CZ - Jun 7, 19:15 UTCJun 7, 19:45 UTC30m
2026-06-07 N407CZ - Jun 7, 04:40 UTCJun 7, 05:05 UTC25m
2026-06-07 N407CZ - Jun 7, 03:00 UTCJun 7, 03:20 UTC20m
2026-06-05 N407CZ - Jun 5, 16:25 UTCJun 5, 16:45 UTC20m
2026-06-05 N407CZ - Jun 5, 04:40 UTCJun 5, 04:55 UTC15m
2026-06-05 N407CZ - Jun 5, 01:45 UTCJun 5, 01:55 UTC10m
2026-06-04 N407CZ - Jun 4, 22:35 UTCJun 4, 23:10 UTC35m
2026-06-04 - - Jun 4, 21:50 UTCJun 4, 22:00 UTC10m
2026-06-04 N407CZ - Jun 4, 19:20 UTCJun 4, 19:30 UTC10m
2026-06-04 N407CZ - Jun 4, 17:25 UTCJun 4, 17:45 UTC20m
2026-06-04 N407CZ - Jun 4, 14:30 UTCJun 4, 15:20 UTC50m
2026-06-03 N407CZ - Jun 3, 00:40 UTCJun 3, 00:50 UTC10m
2026-06-02 N407CZ - Jun 2, 23:20 UTCJun 2, 23:30 UTC10m
2026-06-02 N407CZ - Jun 2, 21:35 UTCJun 2, 21:50 UTC15m
2026-06-02 N407CZ - Jun 2, 06:15 UTCJun 2, 06:30 UTC15m
2026-06-02 N407CZ - Jun 2, 02:00 UTCJun 2, 02:10 UTC10m
2026-06-01 N407CZ - Jun 1, 23:50 UTCJun 2, 00:20 UTC30m
2026-05-25 N407CZ - May 25, 09:50 UTCMay 25, 10:25 UTC35m
2026-05-25 N407CZ - May 25, 07:55 UTCMay 25, 08:50 UTC55m
2026-05-24 N407CZ - May 24, 10:30 UTCMay 24, 10:40 UTC10m
2026-05-24 N407CZ - May 24, 09:15 UTCMay 24, 09:30 UTC15m
2026-05-16 N407CZ - May 16, 17:10 UTCMay 16, 17:15 UTC5m
2026-05-16 N407CZ - May 16, 16:15 UTCMay 16, 16:25 UTC10m
2026-05-09 N407CZ - May 9, 01:50 UTCMay 9, 02:05 UTC15m
2026-05-09 N407CZ - May 9, 00:30 UTCMay 9, 00:50 UTC20m
2026-05-06 N407CZ - May 6, 07:55 UTCMay 6, 08:15 UTC20m
2026-05-06 N407CZ - May 6, 06:45 UTCMay 6, 06:55 UTC10m
2026-04-30 N407CZ - Apr 30, 16:40 UTCApr 30, 16:50 UTC10m
2026-04-30 N407CZ - Apr 30, 15:10 UTCApr 30, 15:20 UTC10m
2026-04-28 N407CZ - Apr 28, 08:00 UTCApr 28, 08:10 UTC10m
2026-04-28 N407CZ - Apr 28, 06:35 UTCApr 28, 07:20 UTC45m
2026-04-26 N407CZ - Apr 26, 08:40 UTCApr 26, 09:05 UTC25m
2026-04-26 N407CZ - Apr 26, 07:20 UTCApr 26, 07:40 UTC20m
2026-04-25 N407CZ - Apr 25, 09:30 UTCApr 25, 09:50 UTC20m
2026-04-25 N407CZ - Apr 25, 08:15 UTCApr 25, 08:30 UTC15m
2026-04-16 N407CZ - Apr 16, 10:45 UTCApr 16, 10:54 UTC10m
2026-04-16 N407CZ - Apr 16, 09:39 UTCApr 16, 09:54 UTC15m
2026-04-16 N407CZ - Apr 16, 05:15 UTCApr 16, 05:29 UTC15m
2026-04-16 N407CZ - Apr 16, 04:00 UTCApr 16, 04:20 UTC20m

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 N407CZ page for operator, model, and routing details .

Mode-S A4C6EC frequently asked

What is Mode-S code A4C6EC?
A4C6EC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N407CZ.
Where is Mode-S A4C6EC registered?
Mode-S code A4C6EC 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 A4C6EC broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4C6EC, octal 51143354, decimal 10,798,828.
What flights does A4C6EC operate?
Mode-S A4C6EC has broadcast 1 distinct callsign, including N407CZ.