Apparatus

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sensors Mode-S transponder

A947A3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N6974H · CESSNA 172 Skyhawk · operated by CHENERY JOHN C

Hex
A947A3
Octal
52243643
Decimal
11,093,923
Country
US
Tail
N6974H
Type
C172
No current signal · last broadcast 1d ago
Flights observed
221
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A947A3.

Country allocation

The ICAO 24-bit address A947A3 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
N6974H - 221 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N6974H - Jul 13, 21:00 UTCJul 13, 21:40 UTC40m
2026-07-13 N6974H OCN → OCN Jul 13, 20:45 UTCJul 13, 20:55 UTC10m
2026-07-13 N6974H OCN → OCN Jul 13, 20:35 UTCJul 13, 20:40 UTC5m
2026-07-12 N6974H - Jul 12, 22:40 UTCJul 13, 00:25 UTC1h 45m
2026-07-12 N6974H - Jul 12, 19:50 UTCJul 12, 21:00 UTC1h 10m
2026-07-12 N6974H - Jul 12, 17:35 UTCJul 12, 18:01 UTC25m
2026-07-12 N6974H OCN → OCN Jul 12, 17:25 UTCJul 12, 17:30 UTC5m
2026-07-11 N6974H - Jul 11, 20:25 UTCJul 11, 20:55 UTC30m
2026-07-11 N6974H - Jul 11, 18:55 UTCJul 11, 19:40 UTC45m
2026-07-11 N6974H - Jul 11, 00:45 UTCJul 11, 00:55 UTC10m
2026-07-10 N6974H OCN → OCN Jul 10, 23:50 UTCJul 11, 00:40 UTC50m
2026-07-10 N6974H OCN → OCN Jul 10, 19:45 UTCJul 10, 20:50 UTC1h 5m
2026-07-09 N6974H OCN → OCN Jul 9, 01:25 UTCJul 9, 02:05 UTC40m
2026-07-09 N6974H OCN → OCN Jul 9, 00:55 UTCJul 9, 01:00 UTC5m
2026-07-09 N6974H OCN → OCN Jul 9, 00:05 UTCJul 9, 00:50 UTC45m
2026-07-08 N6974H OCN → OCN Jul 8, 18:00 UTCJul 8, 18:50 UTC50m
2026-07-07 N6974H OCN → OCN Jul 7, 20:05 UTCJul 7, 21:15 UTC1h 10m
2026-07-06 N6974H AVX → OCN Jul 6, 23:15 UTCJul 7, 00:15 UTC1h 0m
2026-07-06 N6974H OCN → AVX Jul 6, 20:05 UTCJul 6, 20:50 UTC45m
2026-07-06 N6974H - Jul 6, 17:45 UTCJul 6, 18:25 UTC40m
2026-07-06 N6974H OCN → OCN Jul 6, 17:30 UTCJul 6, 17:40 UTC10m
2026-07-05 N6974H - Jul 5, 22:45 UTCJul 5, 23:25 UTC40m
2026-07-05 N6974H OCN → SBD Jul 5, 21:50 UTCJul 5, 22:35 UTC45m
2026-07-04 N6974H AVX → OCN Jul 4, 23:15 UTCJul 4, 23:55 UTC40m
2026-07-04 N6974H - Jul 4, 21:15 UTCJul 4, 21:55 UTC40m
2026-07-04 N6974H OCN → OCN Jul 4, 20:40 UTCJul 4, 20:45 UTC5m
2026-07-04 N6974H OCN → OCN Jul 4, 19:55 UTCJul 4, 20:25 UTC30m
2026-07-04 N6974H OCN → OCN Jul 4, 19:30 UTCJul 4, 19:35 UTC5m
2026-07-04 N6974H OCN → OCN Jul 4, 18:55 UTCJul 4, 19:05 UTC10m
2026-07-03 N6974H OCN → OCN Jul 3, 23:45 UTCJul 4, 00:55 UTC1h 10m
2026-07-02 N6974H OCN → OCN Jul 2, 22:50 UTCJul 3, 00:25 UTC1h 35m
2026-07-02 N6974H - Jul 2, 20:10 UTCJul 2, 21:25 UTC1h 15m
2026-07-02 N6974H - Jul 2, 19:30 UTCJul 2, 19:40 UTC10m
2026-06-29 N6974H OCN → CLD Jun 29, 21:05 UTCJun 29, 21:14 UTC10m
2026-06-28 N6974H OCN → OCN Jun 28, 21:59 UTCJun 28, 23:25 UTC1h 25m
2026-06-28 N6974H OCN → OCN Jun 28, 19:25 UTCJun 28, 19:49 UTC25m
2026-06-27 N6974H OCN → OCN Jun 27, 23:34 UTCJun 28, 00:50 UTC1h 15m
2026-06-27 N6974H - Jun 27, 00:44 UTCJun 27, 00:55 UTC10m
2026-06-27 N6974H - Jun 27, 00:10 UTCJun 27, 00:29 UTC20m
2026-06-26 N6974H OCN → OCN Jun 26, 23:30 UTCJun 26, 23:49 UTC20m
2026-06-26 N6974H OCN → OCN Jun 26, 22:25 UTCJun 26, 23:00 UTC35m
2026-06-26 N6974H - Jun 26, 19:55 UTCJun 26, 20:40 UTC45m
2026-06-26 N6974H - Jun 26, 17:29 UTCJun 26, 18:09 UTC40m
2026-06-25 N6974H OCN → OCN Jun 25, 23:09 UTCJun 25, 23:55 UTC45m
2026-06-25 N6974H OCN → OCN Jun 25, 20:49 UTCJun 25, 22:14 UTC1h 25m
2026-06-24 N6974H OCN → OCN Jun 24, 21:40 UTCJun 24, 22:49 UTC1h 10m
2026-06-24 N6974H - Jun 24, 19:15 UTCJun 24, 19:20 UTC5m
2026-06-24 N6974H OCN → OCN Jun 24, 18:44 UTCJun 24, 19:00 UTC15m
2026-06-24 N6974H - Jun 24, 16:34 UTCJun 24, 16:50 UTC15m
2026-06-24 N6974H OCN → OCN Jun 24, 16:05 UTCJun 24, 16:29 UTC25m

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 N6974H page for operator, model, and routing details .

Mode-S A947A3 frequently asked

What is Mode-S code A947A3?
A947A3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N6974H.
Where is Mode-S A947A3 registered?
Mode-S code A947A3 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 A947A3 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A947A3, octal 52243643, decimal 11,093,923.
What flights does A947A3 operate?
Mode-S A947A3 has broadcast 1 distinct callsign, including N6974H.