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sensors Mode-S transponder

A3ECC9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N352FS · AEROSPATIALE AS-350 Ecureuil · operated by DISCOVERY HELICOPTERS LLC

Hex
A3ECC9
Octal
50766311
Decimal
10,742,985
Country
US
Tail
N352FS
Type
AS50
No current signal · last broadcast Jul 26, 15:55 UTC
Flights observed
220
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 15:55 UTC

Last known position

Most recent position reported by Mode-S A3ECC9.

Country allocation

The ICAO 24-bit address A3ECC9 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
N352FS - 220 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N352FS - Jul 26, 15:30 UTCJul 26, 15:55 UTC25m
2026-07-26 N352FS - Jul 26, 14:30 UTCJul 26, 14:50 UTC20m
2026-07-26 N352FS - Jul 26, 02:00 UTCJul 26, 02:30 UTC30m
2026-07-25 N352FS - Jul 25, 19:20 UTCJul 25, 19:45 UTC25m
2026-07-25 N352FS - Jul 25, 16:25 UTCJul 25, 16:45 UTC20m
2026-07-17 N352FS - Jul 17, 20:00 UTCJul 17, 20:20 UTC20m
2026-07-17 N352FS - Jul 17, 17:15 UTCJul 17, 17:35 UTC20m
2026-07-16 N352FS - Jul 16, 03:45 UTCJul 16, 04:25 UTC40m
2026-07-16 N352FS - Jul 16, 02:50 UTCJul 16, 03:05 UTC15m
2026-07-16 N352FS - Jul 16, 00:50 UTCJul 16, 01:10 UTC20m
2026-07-14 N352FS - Jul 14, 03:30 UTCJul 14, 04:45 UTC1h 15m
2026-07-14 N352FS LAS → LAS Jul 14, 01:30 UTCJul 14, 02:00 UTC30m
2026-07-13 N352FS - Jul 13, 23:10 UTCJul 13, 23:35 UTC25m
2026-07-13 N352FS - Jul 13, 20:10 UTCJul 13, 20:30 UTC20m
2026-07-13 N352FS LAS → LAS Jul 13, 06:40 UTCJul 13, 06:50 UTC10m
2026-07-13 N352FS - Jul 13, 03:55 UTCJul 13, 05:05 UTC1h 10m
2026-07-13 N352FS - Jul 13, 02:35 UTCJul 13, 02:55 UTC20m
2026-07-13 N352FS - Jul 13, 01:25 UTCJul 13, 01:40 UTC15m
2026-07-12 N352FS - Jul 12, 23:35 UTCJul 13, 00:01 UTC25m
2026-07-12 N352FS - Jul 12, 20:01 UTCJul 12, 20:25 UTC25m
2026-07-12 N352FS - Jul 12, 05:05 UTCJul 12, 06:45 UTC1h 40m
2026-07-12 N352FS - Jul 12, 03:50 UTCJul 12, 04:15 UTC25m
2026-07-11 N352FS - Jul 11, 15:05 UTCJul 11, 15:30 UTC25m
2026-07-11 N352FS - Jul 11, 14:05 UTCJul 11, 14:25 UTC20m
2026-07-11 N352FS - Jul 11, 03:45 UTCJul 11, 04:30 UTC45m
2026-07-10 N352FS - Jul 10, 04:55 UTCJul 10, 06:00 UTC1h 5m
2026-07-10 N352FS - Jul 10, 03:50 UTCJul 10, 04:15 UTC25m
2026-07-10 N352FS - Jul 10, 02:30 UTCJul 10, 03:00 UTC30m
2026-07-10 N352FS - Jul 10, 01:15 UTCJul 10, 01:35 UTC20m
2026-07-09 N352FS - Jul 9, 19:40 UTCJul 9, 20:05 UTC25m
2026-07-09 N352FS - Jul 9, 16:05 UTCJul 9, 16:25 UTC20m
2026-07-09 N352FS LAS → LAS Jul 9, 06:05 UTCJul 9, 06:30 UTC25m
2026-07-09 N352FS - Jul 9, 04:50 UTCJul 9, 05:40 UTC50m
2026-07-09 N352FS - Jul 9, 03:45 UTCJul 9, 04:45 UTC1h 0m
2026-07-09 N352FS - Jul 9, 02:30 UTCJul 9, 02:40 UTC10m
2026-07-08 N352FS - Jul 8, 21:15 UTCJul 8, 21:35 UTC20m
2026-07-08 N352FS - Jul 8, 17:10 UTCJul 8, 17:40 UTC30m
2026-07-08 N352FS - Jul 8, 03:35 UTCJul 8, 04:15 UTC40m
2026-07-08 N352FS - Jul 8, 02:20 UTCJul 8, 02:50 UTC30m
2026-07-08 N352FS - Jul 8, 01:15 UTCJul 8, 01:35 UTC20m
2026-07-07 N352FS - Jul 7, 18:55 UTCJul 7, 19:15 UTC20m
2026-07-07 N352FS - Jul 7, 16:05 UTCJul 7, 16:25 UTC20m
2026-07-07 N352FS LAS → LAS Jul 7, 05:10 UTCJul 7, 05:35 UTC25m
2026-07-07 N352FS - Jul 7, 03:30 UTCJul 7, 04:35 UTC1h 5m
2026-07-06 N352FS - Jul 6, 15:00 UTCJul 6, 15:25 UTC25m
2026-07-06 N352FS - Jul 6, 14:00 UTCJul 6, 14:20 UTC20m
2026-07-06 N352FS - Jul 6, 06:20 UTCJul 6, 06:40 UTC20m
2026-07-06 N352FS - Jul 6, 04:25 UTCJul 6, 05:10 UTC45m
2026-07-06 N352FS - Jul 6, 03:40 UTCJul 6, 04:20 UTC40m
2026-07-05 N352FS LAS → LAS Jul 5, 06:20 UTCJul 5, 07:05 UTC45m

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 N352FS page for operator, model, and routing details .

Mode-S A3ECC9 frequently asked

What is Mode-S code A3ECC9?
A3ECC9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N352FS.
Where is Mode-S A3ECC9 registered?
Mode-S code A3ECC9 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 A3ECC9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3ECC9, octal 50766311, decimal 10,742,985.
What flights does A3ECC9 operate?
Mode-S A3ECC9 has broadcast 1 distinct callsign, including N352FS.