Apparatus

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sensors Mode-S transponder

A31CCF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3YJ · BELL 206 JetRanger · operated by HELICOPTERS INC

Hex
A31CCF
Octal
50616317
Decimal
10,689,743
Country
US
Tail
N3YJ
Type
B06
No current signal · last broadcast 28d ago
Flights observed
108
Distinct callsigns
1
Country
US
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S A31CCF.

Country allocation

The ICAO 24-bit address A31CCF 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
N3YJ - 108 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 N3YJ OJC → OJC Jul 21, 20:40 UTCJul 21, 22:30 UTC1h 50m
2026-07-20 N3YJ OJC → OJC Jul 20, 18:10 UTCJul 20, 18:20 UTC10m
2026-07-16 N3YJ - Jul 16, 16:15 UTCJul 16, 16:25 UTC10m
2026-07-16 N3YJ - Jul 16, 14:00 UTCJul 16, 14:10 UTC10m
2026-07-12 N3YJ OJC → OJC Jul 12, 20:55 UTCJul 12, 21:40 UTC45m
2026-07-09 N3YJ - Jul 9, 19:50 UTCJul 9, 20:05 UTC15m
2026-07-09 N3YJ - Jul 9, 18:40 UTCJul 9, 18:55 UTC15m
2026-07-09 N3YJ - Jul 9, 16:00 UTCJul 9, 18:05 UTC2h 5m
2026-07-09 N3YJ - Jul 9, 14:20 UTCJul 9, 14:35 UTC15m
2026-07-07 N3YJ - Jul 7, 15:20 UTCJul 7, 16:10 UTC50m
2026-07-06 N3YJ - Jul 6, 19:20 UTCJul 6, 19:50 UTC30m
2026-07-03 N3YJ OJC → OJC Jul 3, 20:45 UTCJul 3, 22:45 UTC2h 0m
2026-07-02 N3YJ - Jul 2, 02:25 UTCJul 2, 02:40 UTC15m
2026-07-01 N3YJ - Jul 1, 22:55 UTCJul 2, 00:00 UTC1h 5m
2026-07-01 N3YJ - Jul 1, 16:55 UTCJul 1, 17:10 UTC15m
2026-07-01 N3YJ - Jul 1, 13:30 UTCJul 1, 14:10 UTC40m
2026-06-23 N3YJ - Jun 23, 15:34 UTCJun 23, 16:14 UTC40m
2026-06-23 N3YJ - Jun 23, 13:29 UTCJun 23, 13:55 UTC25m
2026-06-23 N3YJ - Jun 23, 10:55 UTCJun 23, 12:09 UTC1h 15m
2026-06-22 N3YJ - Jun 22, 20:55 UTCJun 22, 22:24 UTC1h 30m
2026-06-22 N3YJ - Jun 22, 10:55 UTCJun 22, 12:05 UTC1h 10m
2026-06-20 N3YJ OJC → OJC Jun 20, 22:05 UTCJun 20, 23:10 UTC1h 5m
2026-06-20 N3YJ OJC → OJC Jun 20, 20:29 UTCJun 20, 21:14 UTC45m
2026-06-19 N3YJ OJC → OJC Jun 19, 20:55 UTCJun 19, 22:30 UTC1h 35m
2026-06-19 N3YJ - Jun 19, 10:59 UTCJun 19, 12:09 UTC1h 10m
2026-06-18 N3YJ - Jun 18, 20:55 UTCJun 18, 22:25 UTC1h 30m
2026-06-18 N3YJ - Jun 18, 10:55 UTCJun 18, 12:05 UTC1h 10m
2026-06-17 N3YJ - Jun 17, 10:55 UTCJun 17, 12:10 UTC1h 15m
2026-06-16 N3YJ - Jun 16, 20:40 UTCJun 16, 22:20 UTC1h 40m
2026-06-16 N3YJ - Jun 16, 10:55 UTCJun 16, 12:10 UTC1h 15m
2026-06-15 N3YJ OJC → OJC Jun 15, 20:59 UTCJun 15, 22:20 UTC1h 20m
2026-06-15 N3YJ - Jun 15, 10:55 UTCJun 15, 12:05 UTC1h 10m
2026-06-14 N3YJ - Jun 14, 19:20 UTCJun 14, 19:45 UTC25m
2026-06-14 N3YJ - Jun 14, 18:25 UTCJun 14, 18:45 UTC20m
2026-06-13 N3YJ - Jun 13, 17:00 UTCJun 13, 18:35 UTC1h 35m
2026-06-12 N3YJ OJC → OJC Jun 12, 20:35 UTCJun 12, 23:20 UTC2h 45m
2026-06-12 N3YJ - Jun 12, 16:50 UTCJun 12, 17:05 UTC15m
2026-06-12 N3YJ - Jun 12, 15:45 UTCJun 12, 16:00 UTC15m
2026-06-11 N3YJ - Jun 11, 16:45 UTCJun 11, 18:50 UTC2h 5m
2026-06-10 N3YJ OJC → OJC Jun 10, 19:50 UTCJun 10, 20:05 UTC15m
2026-06-09 N3YJ - Jun 9, 19:10 UTCJun 9, 19:20 UTC10m
2026-06-09 N3YJ - Jun 9, 18:20 UTCJun 9, 18:35 UTC15m
2026-06-09 N3YJ - Jun 9, 17:05 UTCJun 9, 17:40 UTC35m
2026-06-08 N3YJ - Jun 8, 22:25 UTCJun 8, 23:45 UTC1h 20m
2026-06-08 N3YJ - Jun 8, 19:20 UTCJun 8, 20:30 UTC1h 10m
2026-06-05 N3YJ OJC → OJC Jun 5, 17:25 UTCJun 5, 18:15 UTC50m
2026-06-04 N3YJ - Jun 4, 16:55 UTCJun 4, 18:35 UTC1h 40m
2026-06-03 N3YJ - Jun 3, 21:35 UTCJun 3, 22:45 UTC1h 10m
2026-06-02 N3YJ - Jun 2, 21:00 UTCJun 2, 22:20 UTC1h 20m
2026-06-02 N3YJ - Jun 2, 17:20 UTCJun 2, 17:55 UTC35m

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 N3YJ page for operator, model, and routing details .

Mode-S A31CCF frequently asked

What is Mode-S code A31CCF?
A31CCF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3YJ.
Where is Mode-S A31CCF registered?
Mode-S code A31CCF 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 A31CCF broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A31CCF, octal 50616317, decimal 10,689,743.
What flights does A31CCF operate?
Mode-S A31CCF has broadcast 1 distinct callsign, including N3YJ.