Apparatus

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sensors Mode-S transponder

A4CE1C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N409AM · PILATUS PC-12 · operated by N409AM LEASING LLC

Hex
A4CE1C
Octal
51147034
Decimal
10,800,668
Country
US
Tail
N409AM
Type
PC12
No current signal · last broadcast 17h ago
Flights observed
89
Distinct callsigns
1
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S A4CE1C.

Country allocation

The ICAO 24-bit address A4CE1C 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
N409AM - 89 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N409AM - Jul 17, 13:20 UTCJul 17, 15:29 UTC2h 10m
2026-07-15 N409AM - Jul 15, 20:10 UTCJul 15, 21:05 UTC55m
2026-07-15 N409AM - Jul 15, 18:10 UTCJul 15, 19:20 UTC1h 10m
2026-07-15 N409AM - Jul 15, 15:25 UTCJul 15, 17:00 UTC1h 35m
2026-07-15 N409AM - Jul 15, 14:00 UTCJul 15, 14:40 UTC40m
2026-07-15 N409AM - Jul 15, 01:35 UTCJul 15, 03:55 UTC2h 20m
2026-07-14 N409AM - Jul 14, 22:35 UTCJul 15, 00:55 UTC2h 19m
2026-07-12 N409AM - Jul 12, 23:05 UTCJul 12, 23:40 UTC35m
2026-07-12 N409AM - Jul 12, 15:55 UTCJul 12, 16:30 UTC35m
2026-07-08 N409AM - Jul 8, 21:20 UTCJul 8, 22:25 UTC1h 5m
2026-07-08 N409AM - Jul 8, 11:20 UTCJul 8, 12:25 UTC1h 5m
2026-07-07 N409AM - Jul 7, 19:30 UTCJul 7, 21:50 UTC2h 20m
2026-07-07 N409AM - Jul 7, 16:45 UTCJul 7, 18:50 UTC2h 5m
2026-07-06 N409AM IAD → LEX Jul 6, 18:35 UTCJul 6, 20:15 UTC1h 40m
2026-07-06 N409AM - Jul 6, 09:40 UTCJul 6, 11:10 UTC1h 30m
2026-07-05 N409AM - Jul 5, 15:35 UTCJul 5, 16:45 UTC1h 10m
2026-07-05 N409AM LEX → GYY Jul 5, 13:25 UTCJul 5, 14:35 UTC1h 10m
2026-07-02 N409AM SAT → LEX Jul 2, 17:25 UTCJul 2, 21:05 UTC3h 40m
2026-07-02 N409AM - Jul 2, 13:10 UTCJul 2, 16:40 UTC3h 30m
2026-07-01 N409AM - Jul 1, 20:20 UTCJul 1, 21:00 UTC40m
2026-06-29 N409AM - Jun 29, 12:55 UTCJun 29, 13:34 UTC40m
2026-06-29 N409AM - Jun 29, 11:04 UTCJun 29, 12:14 UTC1h 10m
2026-06-27 N409AM - Jun 27, 23:00 UTCJun 28, 01:04 UTC2h 5m
2026-06-27 N409AM LEX → CVG Jun 27, 21:55 UTCJun 27, 22:25 UTC30m
2026-06-27 N409AM - Jun 27, 16:20 UTCJun 27, 19:24 UTC3h 5m
2026-06-27 N409AM - Jun 27, 15:19 UTCJun 27, 15:34 UTC15m
2026-06-21 N409AM - Jun 21, 13:24 UTCJun 21, 16:14 UTC2h 50m
2026-06-20 N409AM - Jun 20, 22:45 UTCJun 21, 00:40 UTC1h 55m
2026-06-20 N409AM - Jun 20, 15:29 UTCJun 20, 18:14 UTC2h 45m
2026-06-17 N409AM - Jun 17, 20:35 UTCJun 17, 22:15 UTC1h 40m
2026-06-17 N409AM - Jun 17, 16:55 UTCJun 17, 18:40 UTC1h 45m
2026-06-16 N409AM - Jun 16, 01:15 UTCJun 16, 04:05 UTC2h 50m
2026-06-15 N409AM - Jun 15, 22:25 UTCJun 15, 22:40 UTC15m
2026-06-15 N409AM - Jun 15, 18:55 UTCJun 15, 21:35 UTC2h 40m
2026-06-15 N409AM - Jun 15, 16:15 UTCJun 15, 18:10 UTC1h 55m
2026-06-12 N409AM - Jun 12, 21:50 UTCJun 12, 22:10 UTC20m
2026-06-12 N409AM - Jun 12, 19:20 UTCJun 12, 21:05 UTC1h 45m
2026-06-12 N409AM - Jun 12, 16:15 UTCJun 12, 17:40 UTC1h 25m
2026-06-07 N409AM - Jun 7, 20:50 UTCJun 7, 23:00 UTC2h 10m
2026-06-05 N409AM - Jun 5, 15:25 UTCJun 5, 17:35 UTC2h 10m
2026-06-04 N409AM - Jun 4, 20:20 UTCJun 5, 01:00 UTC4h 40m
2026-05-31 N409AM - May 31, 21:30 UTCMay 31, 21:50 UTC20m
2026-05-31 N409AM - May 31, 13:40 UTCMay 31, 17:10 UTC3h 30m
2026-05-24 N409AM SAT → LEX May 24, 14:50 UTCMay 24, 18:15 UTC3h 25m
2026-05-24 N409AM - May 24, 10:20 UTCMay 24, 14:00 UTC3h 40m
2026-05-23 N409AM BUF → LEX May 23, 04:00 UTCMay 23, 05:55 UTC1h 55m
2026-05-23 N409AM YCM → BUF May 23, 02:50 UTCMay 23, 03:05 UTC15m
2026-05-22 N409AM - May 22, 23:15 UTCMay 23, 00:50 UTC1h 35m
2026-05-22 N409AM - May 22, 21:30 UTCMay 22, 22:10 UTC40m
2026-05-22 N409AM - May 22, 00:55 UTCMay 22, 03:30 UTC2h 35m

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 N409AM page for operator, model, and routing details .

Mode-S A4CE1C frequently asked

What is Mode-S code A4CE1C?
A4CE1C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N409AM.
Where is Mode-S A4CE1C registered?
Mode-S code A4CE1C 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 A4CE1C 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 A4CE1C, octal 51147034, decimal 10,800,668.
What flights does A4CE1C operate?
Mode-S A4CE1C has broadcast 1 distinct callsign, including N409AM.