Apparatus

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sensors Mode-S transponder

A3C4F2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N342CD · operated by BLANCHARD AVIATION LLC

Hex
A3C4F2
Octal
50742362
Decimal
10,732,786
Country
US
Tail
N342CD
Type
SR22
No current signal · last broadcast 10h ago
Flights observed
23
Distinct callsigns
1
Country
US
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S A3C4F2.

Country allocation

The ICAO 24-bit address A3C4F2 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
N342CD - 23 2026-07-13

Recent flights last 23

DateFlightRouteTakeoffLandingDuration
2026-07-13 N342CD - Jul 13, 15:45 UTCJul 13, 17:15 UTC1h 30m
2026-07-10 N342CD - Jul 10, 18:55 UTCJul 10, 20:15 UTC1h 20m
2026-07-10 N342CD - Jul 10, 16:05 UTCJul 10, 16:15 UTC10m
2026-07-09 N342CD - Jul 9, 12:45 UTCJul 9, 13:25 UTC40m
2026-07-06 N342CD - Jul 6, 13:30 UTCJul 6, 15:25 UTC1h 55m
2026-06-25 N342CD - Jun 25, 18:15 UTCJun 25, 18:59 UTC45m
2026-06-25 N342CD - Jun 25, 13:05 UTCJun 25, 13:40 UTC35m
2026-06-21 N342CD - Jun 21, 20:59 UTCJun 21, 22:24 UTC1h 25m
2026-06-21 N342CD - Jun 21, 13:39 UTCJun 21, 14:30 UTC50m
2026-06-19 N342CD - Jun 19, 20:04 UTCJun 19, 20:14 UTC10m
2026-06-13 N342CD - Jun 13, 00:10 UTCJun 13, 00:50 UTC40m
2026-06-12 N342CD - Jun 12, 14:05 UTCJun 12, 14:55 UTC50m
2026-06-05 N342CD - Jun 5, 23:25 UTCJun 6, 00:15 UTC50m
2026-06-05 N342CD - Jun 5, 13:45 UTCJun 5, 14:20 UTC35m
2026-06-03 N342CD - Jun 3, 13:00 UTCJun 3, 13:50 UTC50m
2026-05-18 N342CD - May 18, 23:45 UTCMay 19, 00:35 UTC50m
2026-05-18 N342CD - May 18, 13:40 UTCMay 18, 14:25 UTC45m
2026-04-25 N342CD - Apr 25, 14:50 UTCApr 25, 15:00 UTC10m
2026-04-20 N342CD - Apr 20, 01:20 UTCApr 20, 01:55 UTC35m
2026-04-19 N342CD - Apr 19, 14:35 UTCApr 19, 15:00 UTC25m
2026-04-19 N342CD - Apr 19, 01:20 UTCApr 19, 01:45 UTC25m
2026-04-18 N342CD - Apr 18, 14:05 UTCApr 18, 14:35 UTC30m
2026-04-16 N342CD - Apr 16, 12:34 UTCApr 16, 13:05 UTC30m

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 N342CD page for operator, model, and routing details .

Mode-S A3C4F2 frequently asked

What is Mode-S code A3C4F2?
A3C4F2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N342CD.
Where is Mode-S A3C4F2 registered?
Mode-S code A3C4F2 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 A3C4F2 broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3C4F2, octal 50742362, decimal 10,732,786.
What flights does A3C4F2 operate?
Mode-S A3C4F2 has broadcast 1 distinct callsign, including N342CD.