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sensors Mode-S transponder

A3C111

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N341AM · AIRBUS HELICOPTERS EC-130 · operated by AIR METHODS LLC

Hex
A3C111
Octal
50740421
Decimal
10,731,793
Country
US
Tail
N341AM
Type
EC30
No current signal · last broadcast Jul 26, 15:50 UTC
Flights observed
263
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 15:50 UTC

Last known position

Most recent position reported by Mode-S A3C111.

Country allocation

The ICAO 24-bit address A3C111 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
N341AM - 263 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N341AM - Jul 26, 15:35 UTCJul 26, 15:50 UTC15m
2026-07-26 N341AM - Jul 26, 04:30 UTCJul 26, 04:40 UTC10m
2026-07-26 N341AM - Jul 26, 02:30 UTCJul 26, 02:50 UTC20m
2026-07-25 N341AM - Jul 25, 21:50 UTCJul 25, 22:05 UTC15m
2026-07-25 N341AM - Jul 25, 20:30 UTCJul 25, 21:15 UTC45m
2026-07-25 N341AM - Jul 25, 18:50 UTCJul 25, 19:05 UTC15m
2026-07-25 N341AM - Jul 25, 17:50 UTCJul 25, 18:15 UTC25m
2026-07-25 N341AM - Jul 25, 07:10 UTCJul 25, 07:25 UTC15m
2026-07-25 N341AM - Jul 25, 06:15 UTCJul 25, 06:30 UTC15m
2026-07-25 N341AM - Jul 25, 05:30 UTCJul 25, 05:40 UTC10m
2026-07-25 N341AM - Jul 25, 02:20 UTCJul 25, 02:30 UTC10m
2026-07-25 N341AM - Jul 25, 00:55 UTCJul 25, 01:05 UTC10m
2026-07-24 N341AM - Jul 24, 19:30 UTCJul 24, 20:55 UTC1h 25m
2026-07-24 N341AM - Jul 24, 18:35 UTCJul 24, 18:50 UTC15m
2026-07-24 N341AM - Jul 24, 17:25 UTCJul 24, 17:40 UTC15m
2026-07-24 N341AM - Jul 24, 16:05 UTCJul 24, 16:20 UTC15m
2026-07-23 N341AM - Jul 23, 13:25 UTCJul 23, 13:55 UTC30m
2026-07-23 N341AM - Jul 23, 11:50 UTCJul 23, 12:40 UTC50m
2026-07-23 N341AM - Jul 23, 07:20 UTCJul 23, 07:35 UTC15m
2026-07-23 N341AM - Jul 23, 06:25 UTCJul 23, 06:40 UTC15m
2026-07-22 N341AM - Jul 22, 23:45 UTCJul 23, 00:40 UTC55m
2026-07-22 N341AM - Jul 22, 22:50 UTCJul 22, 23:00 UTC10m
2026-07-22 N341AM - Jul 22, 22:05 UTCJul 22, 22:15 UTC10m
2026-07-22 N341AM - Jul 22, 20:20 UTCJul 22, 20:40 UTC20m
2026-07-22 N341AM - Jul 22, 19:40 UTCJul 22, 19:50 UTC10m
2026-07-22 N341AM - Jul 22, 18:35 UTCJul 22, 19:00 UTC25m
2026-07-21 N341AM - Jul 21, 23:15 UTCJul 21, 23:35 UTC20m
2026-07-21 N341AM - Jul 21, 21:35 UTCJul 21, 21:50 UTC15m
2026-07-21 N341AM - Jul 21, 13:50 UTCJul 21, 14:20 UTC30m
2026-06-29 N341AM - Jun 29, 22:55 UTCJun 29, 23:39 UTC45m
2026-06-29 N341AM - Jun 29, 20:30 UTCJun 29, 21:30 UTC1h 0m
2026-06-29 N341AM - Jun 29, 15:45 UTCJun 29, 16:29 UTC45m
2026-06-29 N341AM - Jun 29, 13:49 UTCJun 29, 14:34 UTC45m
2026-06-25 N341AM - Jun 25, 19:05 UTCJun 25, 19:29 UTC25m
2026-06-25 N341AM - Jun 25, 17:09 UTCJun 25, 17:25 UTC15m
2026-06-25 N341AM - Jun 25, 16:09 UTCJun 25, 16:24 UTC15m
2026-06-25 N341AM - Jun 25, 15:20 UTCJun 25, 15:34 UTC15m
2026-06-25 N341AM - Jun 25, 13:55 UTCJun 25, 14:04 UTC10m
2026-06-24 N341AM - Jun 24, 23:50 UTCJun 25, 00:09 UTC20m
2026-06-24 N341AM - Jun 24, 22:55 UTCJun 24, 23:14 UTC20m
2026-06-24 N341AM - Jun 24, 12:30 UTCJun 24, 12:54 UTC25m
2026-06-24 N341AM - Jun 24, 11:20 UTCJun 24, 11:34 UTC15m
2026-06-24 N341AM - Jun 24, 01:34 UTCJun 24, 01:55 UTC20m
2026-06-24 N341AM - Jun 24, 00:40 UTCJun 24, 00:55 UTC15m
2026-06-23 N341AM - Jun 23, 19:44 UTCJun 23, 21:05 UTC1h 20m
2026-06-23 N341AM - Jun 23, 18:50 UTCJun 23, 19:04 UTC15m
2026-06-22 N341AM - Jun 22, 23:24 UTCJun 22, 23:39 UTC15m
2026-06-22 N341AM - Jun 22, 22:10 UTCJun 22, 22:49 UTC40m
2026-06-21 N341AM - Jun 21, 00:25 UTCJun 21, 00:45 UTC20m
2026-06-20 N341AM - Jun 20, 23:29 UTCJun 20, 23:45 UTC15m

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 N341AM page for operator, model, and routing details .

Mode-S A3C111 frequently asked

What is Mode-S code A3C111?
A3C111 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N341AM.
Where is Mode-S A3C111 registered?
Mode-S code A3C111 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 A3C111 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3C111, octal 50740421, decimal 10,731,793.
What flights does A3C111 operate?
Mode-S A3C111 has broadcast 1 distinct callsign, including N341AM.