Apparatus

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sensors Mode-S transponder

A9D7E3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N733TK · CESSNA 172 Skyhawk · operated by CARDIFF AVIATION INC

Hex
A9D7E3
Octal
52353743
Decimal
11,130,851
Country
US
Tail
N733TK
Type
C172
No current signal · last broadcast 1d ago
Flights observed
47
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A9D7E3.

Country allocation

The ICAO 24-bit address A9D7E3 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
N733TK - 47 2026-06-22

Recent flights last 47

DateFlightRouteTakeoffLandingDuration
2026-06-22 N733TK OCN → OCN Jun 22, 21:59 UTCJun 22, 23:50 UTC1h 50m
2026-06-04 N733TK - Jun 4, 22:55 UTCJun 4, 23:40 UTC45m
2026-06-04 N733TK - Jun 4, 21:20 UTCJun 4, 22:00 UTC40m
2026-06-03 N733TK - Jun 3, 20:30 UTCJun 3, 20:55 UTC25m
2026-05-26 N733TK - May 26, 16:55 UTCMay 26, 17:15 UTC20m
2026-05-24 N733TK OCN → OCN May 24, 23:05 UTCMay 24, 23:46 UTC41m
2026-05-24 N733TK OCN → OCN May 24, 20:10 UTCMay 24, 21:35 UTC1h 25m
2026-05-23 N733TK OCN → OCN May 23, 19:30 UTCMay 23, 20:30 UTC1h 0m
2026-05-23 N733TK - May 23, 16:30 UTCMay 23, 17:20 UTC50m
2026-05-22 N733TK - May 22, 19:30 UTCMay 22, 20:50 UTC1h 20m
2026-05-20 N733TK AVX → OCN May 20, 19:50 UTCMay 20, 20:25 UTC35m
2026-05-20 N733TK OCN → AVX May 20, 18:05 UTCMay 20, 18:50 UTC45m
2026-05-18 N733TK - May 18, 18:55 UTCMay 18, 19:30 UTC35m
2026-05-18 N733TK OCN → OCN May 18, 18:25 UTCMay 18, 18:50 UTC24m
2026-05-17 N733TK OCN → OCN May 17, 17:50 UTCMay 17, 18:25 UTC35m
2026-05-15 N733TK - May 15, 21:55 UTCMay 15, 22:40 UTC45m
2026-05-14 N733TK OCN → OCN May 14, 23:50 UTCMay 15, 01:20 UTC1h 30m
2026-05-14 N733TK - May 14, 17:50 UTCMay 14, 18:05 UTC15m
2026-05-13 N733TK - May 13, 23:15 UTCMay 13, 23:40 UTC25m
2026-05-13 N733TK OCN → OCN May 13, 20:10 UTCMay 13, 20:55 UTC45m
2026-05-13 N733TK - May 13, 01:20 UTCMay 13, 02:00 UTC40m
2026-05-10 N733TK OCN → OCN May 10, 00:24 UTCMay 10, 00:45 UTC20m
2026-05-09 N733TK - May 9, 23:30 UTCMay 10, 00:00 UTC30m
2026-05-09 N733TK OCN → OCN May 9, 23:05 UTCMay 9, 23:25 UTC20m
2026-05-09 N733TK - May 9, 20:15 UTCMay 9, 20:40 UTC25m
2026-05-09 N733TK - May 9, 18:15 UTCMay 9, 20:10 UTC1h 55m
2026-05-04 N733TK - May 4, 21:10 UTCMay 4, 21:40 UTC30m
2026-05-04 N733TK OCN → OCN May 4, 18:05 UTCMay 4, 19:20 UTC1h 16m
2026-05-03 N733TK OCN → OCN May 3, 16:40 UTCMay 3, 17:29 UTC50m
2026-05-01 N733TK OCN → OCN May 1, 18:20 UTCMay 1, 18:30 UTC10m
2026-04-30 N733TK OCN → OCN Apr 30, 22:05 UTCApr 30, 23:35 UTC1h 30m
2026-04-30 N733TK OCN → OCN Apr 30, 19:25 UTCApr 30, 20:15 UTC50m
2026-04-28 N733TK - Apr 28, 17:45 UTCApr 28, 18:15 UTC30m
2026-04-27 N733TK - Apr 27, 17:40 UTCApr 27, 18:15 UTC35m
2026-04-25 N733TK - Apr 25, 21:15 UTCApr 25, 21:45 UTC30m
2026-04-24 N733TK - Apr 24, 16:45 UTCApr 24, 17:30 UTC45m
2026-04-24 N733TK - Apr 24, 02:05 UTCApr 24, 02:20 UTC15m
2026-04-23 N733TK OCN → OCN Apr 23, 20:00 UTCApr 23, 21:25 UTC1h 25m
2026-04-23 N733TK OCN → OCN Apr 23, 17:45 UTCApr 23, 18:30 UTC45m
2026-04-22 N733TK - Apr 22, 23:15 UTCApr 23, 00:00 UTC45m
2026-04-22 N733TK - Apr 22, 19:55 UTCApr 22, 20:25 UTC30m
2026-04-21 N733TK - Apr 21, 21:20 UTCApr 21, 21:40 UTC20m
2026-04-18 N733TK - Apr 18, 20:35 UTCApr 18, 21:30 UTC55m
2026-04-18 N733TK - Apr 18, 18:10 UTCApr 18, 18:30 UTC20m
2026-04-18 N733TK - Apr 18, 17:35 UTCApr 18, 18:05 UTC30m
2026-04-16 N733TK - Apr 16, 17:15 UTCApr 16, 17:30 UTC15m
2026-04-16 N733TK - Apr 16, 17:00 UTCApr 16, 17:10 UTC10m

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 N733TK page for operator, model, and routing details .

Mode-S A9D7E3 frequently asked

What is Mode-S code A9D7E3?
A9D7E3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N733TK.
Where is Mode-S A9D7E3 registered?
Mode-S code A9D7E3 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 A9D7E3 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 A9D7E3, octal 52353743, decimal 11,130,851.
What flights does A9D7E3 operate?
Mode-S A9D7E3 has broadcast 1 distinct callsign, including N733TK.