Apparatus

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sensors Mode-S transponder

A12747

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1734S · CESSNA 172 Skyhawk · operated by CAREER PILOT TRAINING LLC

Hex
A12747
Octal
50223507
Decimal
10,561,351
Country
US
Tail
N1734S
Type
C172
No current signal · last broadcast 14h ago
Flights observed
134
Distinct callsigns
1
Country
US
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S A12747.

Country allocation

The ICAO 24-bit address A12747 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
CXK683 - 134 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CXK683 - Jul 13, 19:10 UTCJul 13, 20:10 UTC1h 0m
2026-07-13 CXK683 - Jul 13, 16:50 UTCJul 13, 17:45 UTC55m
2026-07-13 CXK683 - Jul 13, 15:45 UTCJul 13, 16:10 UTC25m
2026-07-13 CXK683 - Jul 13, 12:55 UTCJul 13, 14:50 UTC1h 55m
2026-07-12 CXK683 - Jul 12, 19:20 UTCJul 12, 21:45 UTC2h 25m
2026-07-12 CXK683 CAK → CAK Jul 12, 14:35 UTCJul 12, 15:45 UTC1h 10m
2026-07-11 CXK683 - Jul 11, 23:35 UTCJul 12, 01:45 UTC2h 10m
2026-07-11 CXK683 - Jul 11, 15:50 UTCJul 11, 17:55 UTC2h 5m
2026-07-10 CXK683 - Jul 10, 17:00 UTCJul 10, 17:40 UTC40m
2026-07-07 CXK683 CAK → CAK Jul 7, 23:50 UTCJul 8, 01:30 UTC1h 40m
2026-07-07 CXK683 - Jul 7, 17:10 UTCJul 7, 19:15 UTC2h 5m
2026-07-04 CXK683 CAK → CAK Jul 4, 15:35 UTCJul 4, 17:40 UTC2h 5m
2026-07-04 CXK683 - Jul 4, 12:45 UTCJul 4, 14:45 UTC2h 0m
2026-07-04 CXK683 CAK → CAK Jul 4, 09:35 UTCJul 4, 10:55 UTC1h 20m
2026-07-02 CXK683 - Jul 2, 17:50 UTCJul 2, 19:50 UTC2h 0m
2026-07-01 CXK683 - Jul 1, 17:35 UTCJul 1, 18:50 UTC1h 15m
2026-07-01 CXK683 - Jul 1, 12:25 UTCJul 1, 12:40 UTC15m
2026-07-01 CXK683 CAK → CAK Jul 1, 10:45 UTCJul 1, 11:05 UTC20m
2026-06-30 CXK683 - Jun 30, 23:35 UTCJul 1, 02:00 UTC2h 25m
2026-06-24 CXK683 - Jun 24, 18:09 UTCJun 24, 19:39 UTC1h 30m
2026-06-24 CXK683 - Jun 24, 15:39 UTCJun 24, 16:34 UTC55m
2026-06-24 CXK683 - Jun 24, 13:05 UTCJun 24, 14:34 UTC1h 30m
2026-06-23 CXK683 - Jun 23, 11:14 UTCJun 23, 13:39 UTC2h 25m
2026-06-22 CXK683 - Jun 22, 19:29 UTCJun 22, 20:30 UTC1h 0m
2026-06-22 CXK683 - Jun 22, 15:54 UTCJun 22, 17:55 UTC2h 0m
2026-06-21 CXK683 - Jun 21, 22:04 UTCJun 21, 22:34 UTC30m
2026-06-21 CXK683 - Jun 21, 20:54 UTCJun 21, 21:24 UTC30m
2026-06-21 CXK683 - Jun 21, 18:20 UTCJun 21, 19:29 UTC1h 10m
2026-06-19 CXK683 - Jun 19, 17:04 UTCJun 19, 18:25 UTC1h 20m
2026-06-15 CXK683 - Jun 15, 21:50 UTCJun 16, 00:10 UTC2h 20m
2026-06-15 CXK683 - Jun 15, 14:50 UTCJun 15, 18:15 UTC3h 25m
2026-06-15 CXK683 - Jun 15, 11:10 UTCJun 15, 12:39 UTC1h 30m
2026-06-13 CXK683 - Jun 13, 13:30 UTCJun 13, 15:15 UTC1h 45m
2026-06-13 CXK683 - Jun 13, 10:35 UTCJun 13, 12:10 UTC1h 35m
2026-06-11 CXK683 - Jun 11, 19:25 UTCJun 11, 20:35 UTC1h 10m
2026-06-10 CXK683 - Jun 10, 19:50 UTCJun 10, 21:15 UTC1h 25m
2026-06-10 CXK683 PTK → PTK Jun 10, 16:35 UTCJun 10, 17:40 UTC1h 5m
2026-06-10 CXK683 PTK → PTK Jun 10, 15:40 UTCJun 10, 15:50 UTC10m
2026-06-08 CXK683 - Jun 8, 22:25 UTCJun 9, 00:10 UTC1h 45m
2026-06-08 CXK683 - Jun 8, 18:45 UTCJun 8, 20:50 UTC2h 5m
2026-06-08 CXK683 - Jun 8, 15:04 UTCJun 8, 15:35 UTC30m
2026-06-08 CXK683 PTK → JXN Jun 8, 13:25 UTCJun 8, 15:00 UTC1h 35m
2026-06-08 CXK683 - Jun 8, 12:20 UTCJun 8, 12:40 UTC20m
2026-06-07 CXK683 - Jun 7, 23:20 UTCJun 8, 00:15 UTC55m
2026-06-07 CXK683 - Jun 7, 20:50 UTCJun 7, 22:10 UTC1h 20m
2026-06-05 CXK683 - Jun 5, 12:10 UTCJun 5, 13:45 UTC1h 35m
2026-06-04 CXK683 - Jun 4, 15:25 UTCJun 4, 16:35 UTC1h 10m
2026-06-03 CXK683 YIP → PTK Jun 3, 15:10 UTCJun 3, 17:10 UTC2h 0m
2026-06-03 CXK683 - Jun 3, 12:55 UTCJun 3, 14:20 UTC1h 25m
2026-06-02 CXK683 - Jun 2, 20:35 UTCJun 2, 22:20 UTC1h 45m

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 N1734S page for operator, model, and routing details .

Mode-S A12747 frequently asked

What is Mode-S code A12747?
A12747 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1734S.
Where is Mode-S A12747 registered?
Mode-S code A12747 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 A12747 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 A12747, octal 50223507, decimal 10,561,351.
What flights does A12747 operate?
Mode-S A12747 has broadcast 1 distinct callsign, including CXK683.