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sensors Mode-S transponder

A4C6E2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N407CP · BELL 407 · operated by CLASSIC MEDICAL INC

Hex
A4C6E2
Octal
51143342
Decimal
10,798,818
Country
US
Tail
N407CP
Type
B407
No current signal · last broadcast Jul 20, 05:50 UTC
Flights observed
77
Distinct callsigns
1
Country
US
Last broadcast
Jul 20, 05:50 UTC

Last known position

Most recent position reported by Mode-S A4C6E2.

Country allocation

The ICAO 24-bit address A4C6E2 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
N407CP - 77 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 N407CP - Jul 20, 05:40 UTCJul 20, 05:50 UTC10m
2026-07-17 N407CP - Jul 17, 04:14 UTCJul 17, 05:30 UTC1h 15m
2026-07-17 N407CP - Jul 17, 03:45 UTCJul 17, 04:10 UTC25m
2026-07-16 N407CP - Jul 16, 18:19 UTCJul 16, 18:34 UTC15m
2026-07-16 N407CP - Jul 16, 17:54 UTCJul 16, 18:15 UTC20m
2026-07-16 N407CP - Jul 16, 15:35 UTCJul 16, 15:49 UTC15m
2026-07-16 N407CP - Jul 16, 14:35 UTCJul 16, 14:50 UTC15m
2026-07-16 N407CP - Jul 16, 04:40 UTCJul 16, 05:10 UTC30m
2026-07-16 N407CP - Jul 16, 04:15 UTCJul 16, 04:35 UTC20m
2026-07-16 N407CP - Jul 16, 02:05 UTCJul 16, 03:20 UTC1h 15m
2026-07-15 N407CP - Jul 15, 03:55 UTCJul 15, 04:40 UTC45m
2026-07-15 N407CP - Jul 15, 02:30 UTCJul 15, 02:50 UTC20m
2026-07-15 N407CP - Jul 15, 02:10 UTCJul 15, 02:25 UTC15m
2026-07-12 N407CP - Jul 12, 17:01 UTCJul 12, 17:25 UTC25m
2026-07-12 N407CP - Jul 12, 12:15 UTCJul 12, 12:30 UTC15m
2026-07-12 N407CP - Jul 12, 04:45 UTCJul 12, 05:50 UTC1h 5m
2026-07-11 N407CP - Jul 11, 21:50 UTCJul 11, 22:20 UTC30m
2026-07-11 N407CP - Jul 11, 18:00 UTCJul 11, 18:10 UTC10m
2026-07-11 N407CP - Jul 11, 16:40 UTCJul 11, 17:15 UTC35m
2026-07-08 N407CP - Jul 8, 23:00 UTCJul 8, 23:15 UTC15m
2026-07-08 N407CP - Jul 8, 15:25 UTCJul 8, 15:45 UTC20m
2026-07-06 N407CP - Jul 6, 03:10 UTCJul 6, 03:20 UTC10m
2026-07-05 N407CP - Jul 5, 22:25 UTCJul 5, 22:35 UTC10m
2026-07-05 N407CP - Jul 5, 20:45 UTCJul 5, 20:55 UTC10m
2026-06-28 N407CP - Jun 28, 08:19 UTCJun 28, 08:44 UTC25m
2026-06-28 N407CP - Jun 28, 07:14 UTCJun 28, 07:25 UTC10m
2026-06-28 N407CP - Jun 28, 04:40 UTCJun 28, 04:50 UTC10m
2026-06-28 N407CP - Jun 28, 03:25 UTCJun 28, 03:29 UTC5m
2026-06-27 N407CP - Jun 27, 16:00 UTCJun 27, 16:10 UTC10m
2026-06-27 N407CP - Jun 27, 14:35 UTCJun 27, 14:49 UTC15m
2026-06-24 N407CP - Jun 24, 07:54 UTCJun 24, 08:04 UTC10m
2026-06-24 N407CP - Jun 24, 00:40 UTCJun 24, 00:49 UTC10m
2026-06-23 N407CP - Jun 23, 23:05 UTCJun 23, 23:14 UTC10m
2026-06-17 N407CP - Jun 17, 03:25 UTCJun 17, 03:35 UTC10m
2026-06-16 N407CP - Jun 16, 05:20 UTCJun 16, 05:45 UTC25m
2026-06-16 N407CP - Jun 16, 04:55 UTCJun 16, 05:00 UTC5m
2026-06-16 N407CP - Jun 16, 03:30 UTCJun 16, 03:50 UTC20m
2026-06-15 N407CP - Jun 15, 06:20 UTCJun 15, 06:30 UTC10m
2026-06-14 N407CP - Jun 14, 22:55 UTCJun 14, 23:10 UTC14m
2026-06-14 N407CP - Jun 14, 21:05 UTCJun 14, 21:25 UTC20m
2026-06-13 N407CP - Jun 13, 06:35 UTCJun 13, 06:50 UTC15m
2026-06-13 N407CP - Jun 13, 06:00 UTCJun 13, 06:05 UTC5m
2026-06-13 N407CP - Jun 13, 04:45 UTCJun 13, 04:55 UTC10m
2026-06-12 N407CP - Jun 12, 06:35 UTCJun 12, 07:10 UTC35m
2026-06-12 N407CP - Jun 12, 05:20 UTCJun 12, 05:35 UTC15m
2026-06-11 N407CP - Jun 11, 21:50 UTCJun 11, 22:10 UTC20m
2026-06-07 N407CP - Jun 7, 16:55 UTCJun 7, 17:10 UTC15m
2026-06-07 N407CP - Jun 7, 06:05 UTCJun 7, 06:15 UTC10m
2026-06-05 N407CP - Jun 5, 16:40 UTCJun 5, 16:55 UTC15m
2026-06-05 N407CP - Jun 5, 14:35 UTCJun 5, 14:45 UTC10m

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 N407CP page for operator, model, and routing details .

Mode-S A4C6E2 frequently asked

What is Mode-S code A4C6E2?
A4C6E2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N407CP.
Where is Mode-S A4C6E2 registered?
Mode-S code A4C6E2 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 A4C6E2 broadcasting right now?
No active broadcast right now. Last signal was Jul 20, 05:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4C6E2, octal 51143342, decimal 10,798,818.
What flights does A4C6E2 operate?
Mode-S A4C6E2 has broadcast 1 distinct callsign, including N407CP.