Apparatus

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sensors Mode-S transponder

A9D66F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N733CN · CESSNA 172 Skyhawk · operated by CHRISTIANSEN AVIATION LLC

Hex
A9D66F
Octal
52353157
Decimal
11,130,479
Country
US
Tail
N733CN
Type
C172
No current signal · last broadcast 1d ago
Flights observed
56
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A9D66F.

Country allocation

The ICAO 24-bit address A9D66F 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
AUB130 - 56 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AUB130 AUO → AUO May 29, 12:55 UTCMay 29, 13:55 UTC1h 0m
2026-05-28 AUB130 - May 28, 20:15 UTCMay 28, 20:25 UTC10m
2026-05-28 AUB130 - May 28, 19:25 UTCMay 28, 19:40 UTC15m
2026-05-28 AUB130 AUO → AUO May 28, 15:05 UTCMay 28, 16:05 UTC1h 0m
2026-05-27 AUB130 AUO → AUO May 27, 12:10 UTCMay 27, 13:25 UTC1h 15m
2026-05-22 AUB130 AUO → AUO May 22, 17:00 UTCMay 22, 18:00 UTC1h 0m
2026-05-21 AUB130 - May 21, 20:35 UTCMay 21, 20:45 UTC10m
2026-05-21 AUB130 - May 21, 19:35 UTCMay 21, 19:40 UTC5m
2026-05-20 AUB130 AUO → AUO May 20, 21:50 UTCMay 20, 23:25 UTC1h 35m
2026-05-19 AUB130 AUO → AUO May 19, 21:35 UTCMay 19, 23:00 UTC1h 25m
2026-05-08 AUB130 AUO → AUO May 8, 19:10 UTCMay 8, 20:10 UTC1h 0m
2026-05-07 AUB130 AUO → AUO May 7, 18:45 UTCMay 7, 20:05 UTC1h 20m
2026-05-05 AUB130 AUO → AUO May 5, 18:40 UTCMay 5, 20:25 UTC1h 45m
2026-05-05 AUB130 AUO → AUO May 5, 01:50 UTCMay 5, 03:15 UTC1h 25m
2026-05-04 AUB130 - May 4, 17:15 UTCMay 4, 18:00 UTC45m
2026-05-04 AUB130 - May 4, 16:30 UTCMay 4, 16:45 UTC15m
2026-05-01 AUB130 AUO → AUO May 1, 19:20 UTCMay 1, 20:30 UTC1h 10m
2026-05-01 AUB130 AUO → AUO May 1, 15:30 UTCMay 1, 16:45 UTC1h 15m
2026-04-30 AUB130 AUO → AUO Apr 30, 21:30 UTCApr 30, 22:45 UTC1h 15m
2026-04-27 AUB130 - Apr 27, 18:55 UTCApr 27, 20:45 UTC1h 50m
2026-04-27 AUB130 - Apr 27, 15:25 UTCApr 27, 17:15 UTC1h 50m
2026-04-24 AUB130 AUO → AUO Apr 24, 21:15 UTCApr 24, 22:35 UTC1h 20m
2026-04-24 AUB130 AUO → AUO Apr 24, 17:45 UTCApr 24, 18:45 UTC1h 0m
2026-04-24 AUB130 AUO → AUO Apr 24, 12:50 UTCApr 24, 14:50 UTC2h 0m
2026-04-24 AUB130 - Apr 24, 04:05 UTCApr 24, 04:20 UTC15m
2026-04-24 AUB130 - Apr 24, 01:25 UTCApr 24, 01:55 UTC30m
2026-04-23 AUB130 - Apr 23, 22:20 UTCApr 23, 23:40 UTC1h 20m
2026-04-23 AUB130 - Apr 23, 20:10 UTCApr 23, 21:30 UTC1h 20m
2026-04-23 AUB130 - Apr 23, 16:55 UTCApr 23, 18:00 UTC1h 4m
2026-04-23 AUB130 - Apr 23, 14:45 UTCApr 23, 15:55 UTC1h 10m
2026-04-22 AUB130 - Apr 22, 23:40 UTCApr 23, 00:05 UTC25m
2026-04-22 AUB130 - Apr 22, 22:50 UTCApr 22, 23:00 UTC10m
2026-04-22 AUB130 AUO → AUO Apr 22, 19:10 UTCApr 22, 20:20 UTC1h 10m
2026-04-22 AUB130 AUO → AUO Apr 22, 13:30 UTCApr 22, 16:15 UTC2h 45m
2026-04-22 AUB130 - Apr 22, 02:35 UTCApr 22, 03:25 UTC50m
2026-04-22 AUB130 - Apr 22, 00:45 UTCApr 22, 01:00 UTC15m
2026-04-21 AUB130 AUO → AUO Apr 21, 18:25 UTCApr 21, 19:40 UTC1h 15m
2026-04-21 AUB130 AUO → AUO Apr 21, 14:05 UTCApr 21, 15:15 UTC1h 10m
2026-04-20 AUB130 AUO → AUO Apr 20, 23:40 UTCApr 21, 02:15 UTC2h 35m
2026-04-20 AUB130 AUO → AUO Apr 20, 19:50 UTCApr 20, 22:15 UTC2h 25m
2026-04-20 AUB130 AUO → AUO Apr 20, 14:15 UTCApr 20, 15:35 UTC1h 20m
2026-04-18 AUB130 AUO → AUO Apr 18, 21:50 UTCApr 18, 22:45 UTC55m
2026-04-18 AUB130 AUO → AUO Apr 18, 14:10 UTCApr 18, 15:05 UTC55m
2026-04-17 AUB130 - Apr 17, 15:20 UTCApr 17, 16:45 UTC1h 25m
2026-04-16 AUB130 - Apr 16, 21:14 UTCApr 16, 21:55 UTC40m
2026-04-16 AUB130 - Apr 16, 15:15 UTCApr 16, 15:50 UTC35m
2026-04-16 AUB130 - Apr 16, 14:30 UTCApr 16, 15:05 UTC35m
2026-04-15 AUB130 - Apr 15, 21:05 UTCApr 15, 21:35 UTC30m
2026-04-15 AUB130 - Apr 15, 20:35 UTCApr 15, 21:00 UTC25m
2026-04-15 AUB130 - Apr 15, 16:10 UTCApr 15, 16:40 UTC30m

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 N733CN page for operator, model, and routing details .

Mode-S A9D66F frequently asked

What is Mode-S code A9D66F?
A9D66F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N733CN.
Where is Mode-S A9D66F registered?
Mode-S code A9D66F 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 A9D66F 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 A9D66F, octal 52353157, decimal 11,130,479.
What flights does A9D66F operate?
Mode-S A9D66F has broadcast 1 distinct callsign, including AUB130.