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 14h ago
Flights observed
103
Distinct callsigns
1
Country
US
Last broadcast
14h 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 - 103 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 N6974H - May 30, 02:25 UTCMay 30, 04:00 UTC1h 35m
2026-05-30 N6974H OCN → CLD May 30, 01:45 UTCMay 30, 01:50 UTC5m
2026-05-30 N6974H - May 30, 00:30 UTCMay 30, 00:50 UTC20m
2026-05-29 N6974H OCN → OCN May 29, 23:55 UTCMay 30, 00:15 UTC20m
2026-05-29 N6974H - May 29, 20:35 UTCMay 29, 20:55 UTC20m
2026-05-29 N6974H OCN → OCN May 29, 20:00 UTCMay 29, 20:30 UTC30m
2026-05-29 N6974H RBK → OCN May 29, 18:15 UTCMay 29, 18:55 UTC40m
2026-05-29 N6974H OCN → RBK May 29, 17:15 UTCMay 29, 17:45 UTC30m
2026-05-28 N6974H OCN → OCN May 28, 16:35 UTCMay 28, 18:10 UTC1h 35m
2026-05-28 N6974H OCN → OCN May 28, 00:55 UTCMay 28, 01:15 UTC20m
2026-05-26 N6974H - May 26, 17:04 UTCMay 26, 17:55 UTC50m
2026-05-26 N6974H OCN → OCN May 26, 16:45 UTCMay 26, 16:50 UTC5m
2026-05-25 N6974H HII → OCN May 25, 17:45 UTCMay 25, 19:30 UTC1h 45m
2026-05-22 N6974H OCN → HII May 22, 16:00 UTCMay 22, 18:00 UTC2h 0m
2026-05-22 N6974H OCN → OCN May 22, 01:25 UTCMay 22, 01:55 UTC30m
2026-05-21 N6974H OCN → OCN May 21, 23:00 UTCMay 21, 23:05 UTC5m
2026-05-21 N6974H OCN → OCN May 21, 22:50 UTCMay 21, 22:55 UTC5m
2026-05-21 N6974H OCN → OCN May 21, 20:15 UTCMay 21, 20:55 UTC40m
2026-05-21 N6974H OCN → OCN May 21, 18:10 UTCMay 21, 18:35 UTC25m
2026-05-21 N6974H - May 21, 03:00 UTCMay 21, 03:40 UTC40m
2026-05-21 N6974H OCN → FUL May 21, 01:30 UTCMay 21, 02:20 UTC50m
2026-05-20 N6974H - May 20, 23:35 UTCMay 21, 00:25 UTC50m
2026-05-20 N6974H OCN → RBK May 20, 21:35 UTCMay 20, 22:00 UTC25m
2026-05-20 N6974H OCN → OCN May 20, 19:25 UTCMay 20, 20:05 UTC40m
2026-05-19 N6974H OCN → OCN May 19, 21:20 UTCMay 19, 22:40 UTC1h 20m
2026-05-19 N6974H OCN → OCN May 19, 18:35 UTCMay 19, 19:35 UTC1h 0m
2026-05-19 N6974H OCN → OCN May 19, 00:20 UTCMay 19, 01:45 UTC1h 25m
2026-05-18 N6974H OCN → OCN May 18, 21:50 UTCMay 18, 22:25 UTC35m
2026-05-17 N6974H OCN → OCN May 17, 19:01 UTCMay 17, 20:45 UTC1h 45m
2026-05-17 N6974H OCN → OCN May 17, 15:35 UTCMay 17, 16:40 UTC1h 5m
2026-05-17 N6974H OCN → OCN May 17, 15:10 UTCMay 17, 15:31 UTC20m
2026-05-17 N6974H OCN → OCN May 17, 00:25 UTCMay 17, 00:50 UTC25m
2026-05-16 N6974H OCN → OCN May 16, 23:45 UTCMay 17, 00:20 UTC35m
2026-05-16 N6974H - May 16, 17:45 UTCMay 16, 17:50 UTC5m
2026-05-16 N6974H - May 16, 17:25 UTCMay 16, 17:40 UTC15m
2026-05-16 N6974H OCN → OCN May 16, 17:05 UTCMay 16, 17:20 UTC15m
2026-05-16 N6974H OCN → OCN May 16, 02:45 UTCMay 16, 03:05 UTC20m
2026-05-15 N6974H OCN → OCN May 15, 18:45 UTCMay 15, 19:45 UTC1h 0m
2026-05-15 N6974H - May 15, 00:30 UTCMay 15, 00:40 UTC10m
2026-05-15 N6974H - May 15, 00:05 UTCMay 15, 00:15 UTC10m
2026-05-14 N6974H OCN → OCN May 14, 22:20 UTCMay 14, 23:40 UTC1h 20m
2026-05-14 N6974H - May 14, 19:05 UTCMay 14, 19:10 UTC5m
2026-05-14 N6974H OCN → OCN May 14, 18:25 UTCMay 14, 18:30 UTC5m
2026-05-14 N6974H OCN → OCN May 14, 16:15 UTCMay 14, 17:20 UTC1h 5m
2026-05-14 N6974H - May 14, 00:55 UTCMay 14, 01:05 UTC10m
2026-05-11 N6974H OCN → CLD May 11, 15:40 UTCMay 11, 15:55 UTC15m
2026-05-10 N6974H AVX → OCN May 10, 22:15 UTCMay 10, 23:00 UTC45m
2026-05-09 N6974H OCN → AVX May 9, 21:50 UTCMay 9, 22:45 UTC55m
2026-05-08 N6974H OCN → OCN May 8, 19:25 UTCMay 8, 20:00 UTC35m
2026-05-07 N6974H - May 7, 22:25 UTCMay 7, 22:54 UTC29m

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 14h 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.