Apparatus

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sensors Mode-S transponder

A491E3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N394CM · CESSNA 510 Citation Mustang · operated by CORSAIR TWO LLC

Hex
A491E3
Octal
51110743
Decimal
10,785,251
Country
US
Tail
N394CM
Type
C510
No current signal · last broadcast 13h ago
Flights observed
120
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A491E3.

Country allocation

The ICAO 24-bit address A491E3 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
N394CM - 120 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N394CM - Jul 13, 22:20 UTCJul 14, 00:00 UTC1h 40m
2026-07-13 N394CM - Jul 13, 19:40 UTCJul 13, 20:50 UTC1h 10m
2026-07-13 N394CM - Jul 13, 18:15 UTCJul 13, 18:40 UTC25m
2026-07-13 N394CM - Jul 13, 07:15 UTCJul 13, 08:25 UTC1h 10m
2026-07-13 N394CM - Jul 13, 06:05 UTCJul 13, 06:35 UTC30m
2026-07-13 N394CM - Jul 13, 04:20 UTCJul 13, 05:25 UTC1h 5m
2026-07-13 N394CM - Jul 13, 00:40 UTCJul 13, 03:30 UTC2h 50m
2026-07-12 N394CM HIO → COS Jul 12, 20:35 UTCJul 12, 23:50 UTC3h 15m
2026-07-11 N394CM - Jul 11, 06:05 UTCJul 11, 06:35 UTC30m
2026-07-11 N394CM - Jul 11, 02:55 UTCJul 11, 05:31 UTC2h 35m
2026-07-10 N394CM - Jul 10, 21:25 UTCJul 10, 23:45 UTC2h 20m
2026-07-10 N394CM - Jul 10, 19:45 UTCJul 10, 20:25 UTC40m
2026-07-10 N394CM HIO → RDM Jul 10, 18:30 UTCJul 10, 19:00 UTC30m
2026-07-08 N394CM - Jul 8, 05:35 UTCJul 8, 06:45 UTC1h 10m
2026-07-08 N394CM - Jul 8, 03:40 UTCJul 8, 04:50 UTC1h 10m
2026-07-08 N394CM - Jul 8, 00:45 UTCJul 8, 01:05 UTC20m
2026-07-08 N394CM - Jul 8, 00:00 UTCJul 8, 00:10 UTC10m
2026-07-07 N394CM - Jul 7, 20:20 UTCJul 7, 22:20 UTC2h 0m
2026-07-07 N394CM - Jul 7, 16:55 UTCJul 7, 19:30 UTC2h 35m
2026-07-07 N394CM - Jul 7, 04:35 UTCJul 7, 05:20 UTC45m
2026-07-07 N394CM - Jul 7, 01:45 UTCJul 7, 03:45 UTC2h 0m
2026-07-06 N394CM - Jul 6, 23:20 UTCJul 7, 00:20 UTC1h 0m
2026-07-06 N394CM - Jul 6, 20:50 UTCJul 6, 22:25 UTC1h 35m
2026-07-06 N394CM - Jul 6, 19:40 UTCJul 6, 19:55 UTC15m
2026-07-06 N394CM - Jul 6, 18:35 UTCJul 6, 18:55 UTC20m
2026-07-06 N394CM - Jul 6, 04:35 UTCJul 6, 05:35 UTC1h 0m
2026-07-05 N394CM GEG → GEG Jul 5, 19:20 UTCJul 6, 04:10 UTC8h 50m
2026-07-05 N394CM HIO → GEG Jul 5, 17:40 UTCJul 5, 18:35 UTC55m
2026-07-05 N394CM - Jul 5, 05:20 UTCJul 5, 06:00 UTC40m
2026-07-05 N394CM - Jul 5, 02:15 UTCJul 5, 04:45 UTC2h 30m
2026-07-04 N394CM - Jul 4, 20:50 UTCJul 5, 00:50 UTC4h 0m
2026-07-02 N394CM - Jul 2, 03:55 UTCJul 2, 07:20 UTC3h 25m
2026-07-02 N394CM - Jul 2, 02:15 UTCJul 2, 03:00 UTC45m
2026-07-01 N394CM - Jul 1, 21:50 UTCJul 2, 01:30 UTC3h 40m
2026-07-01 N394CM BFI → HIO Jul 1, 20:30 UTCJul 1, 21:05 UTC35m
2026-07-01 N394CM HIO → BFI Jul 1, 17:45 UTCJul 1, 18:25 UTC40m
2026-06-30 N394CM HIO → HIO Jun 30, 18:25 UTCJun 30, 19:15 UTC50m
2026-06-26 N394CM - Jun 26, 19:20 UTCJun 26, 20:00 UTC40m
2026-06-26 N394CM - Jun 26, 18:20 UTCJun 26, 18:39 UTC20m
2026-06-26 N394CM - Jun 26, 17:19 UTCJun 26, 17:44 UTC25m
2026-06-23 N394CM - Jun 23, 01:00 UTCJun 23, 01:15 UTC15m
2026-06-23 N394CM - Jun 23, 00:04 UTCJun 23, 00:45 UTC40m
2026-06-22 N394CM - Jun 22, 19:40 UTCJun 22, 20:24 UTC45m
2026-06-22 N394CM HIO → SLE Jun 22, 18:54 UTCJun 22, 19:09 UTC15m
2026-06-18 N394CM - Jun 18, 15:30 UTCJun 18, 16:10 UTC40m
2026-06-18 N394CM - Jun 18, 14:20 UTCJun 18, 15:05 UTC45m
2026-06-17 N394CM - Jun 17, 02:35 UTCJun 17, 03:15 UTC40m
2026-06-17 N394CM - Jun 17, 01:00 UTCJun 17, 02:00 UTC1h 0m
2026-06-16 N394CM - Jun 16, 22:15 UTCJun 16, 22:45 UTC30m
2026-06-16 N394CM - Jun 16, 10:25 UTCJun 16, 12:30 UTC2h 5m

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 N394CM page for operator, model, and routing details .

Mode-S A491E3 frequently asked

What is Mode-S code A491E3?
A491E3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N394CM.
Where is Mode-S A491E3 registered?
Mode-S code A491E3 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 A491E3 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A491E3, octal 51110743, decimal 10,785,251.
What flights does A491E3 operate?
Mode-S A491E3 has broadcast 1 distinct callsign, including N394CM.