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 5h ago
Flights observed
121
Distinct callsigns
1
Country
US
Last broadcast
5h 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 - 121 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AUB130 AUO → AUO Jul 14, 14:30 UTCJul 14, 16:05 UTC1h 35m
2026-07-14 AUB130 AUO → AUO Jul 14, 01:15 UTCJul 14, 01:20 UTC5m
2026-07-13 AUB130 - Jul 13, 23:35 UTCJul 14, 00:45 UTC1h 10m
2026-07-13 AUB130 AUO → AUO Jul 13, 21:00 UTCJul 13, 21:20 UTC20m
2026-07-13 AUB130 AUO → AUO Jul 13, 19:50 UTCJul 13, 19:55 UTC5m
2026-07-13 AUB130 AUO → AUO Jul 13, 16:10 UTCJul 13, 17:35 UTC1h 25m
2026-07-13 AUB130 AUO → AUO Jul 13, 12:50 UTCJul 13, 14:00 UTC1h 10m
2026-07-11 AUB130 - Jul 11, 17:45 UTCJul 11, 18:05 UTC20m
2026-07-11 AUB130 - Jul 11, 16:35 UTCJul 11, 16:50 UTC15m
2026-07-11 AUB130 AUO → AUO Jul 11, 13:30 UTCJul 11, 14:45 UTC1h 15m
2026-07-10 AUB130 AUO → AUO Jul 10, 19:50 UTCJul 10, 21:10 UTC1h 20m
2026-07-10 AUB130 AUO → AUO Jul 10, 17:25 UTCJul 10, 18:10 UTC45m
2026-07-10 AUB130 AUO → AUO Jul 10, 12:05 UTCJul 10, 15:00 UTC2h 55m
2026-07-09 AUB130 AUO → AUO Jul 9, 17:25 UTCJul 9, 18:05 UTC40m
2026-07-09 AUB130 AUO → AUO Jul 9, 12:35 UTCJul 9, 14:10 UTC1h 35m
2026-07-08 AUB130 AUO → AUO Jul 8, 20:55 UTCJul 8, 22:10 UTC1h 15m
2026-07-08 AUB130 AUO → AUO Jul 8, 15:20 UTCJul 8, 16:35 UTC1h 15m
2026-07-07 AUB130 AUO → AUO Jul 7, 21:30 UTCJul 7, 22:35 UTC1h 5m
2026-07-07 AUB130 - Jul 7, 15:05 UTCJul 7, 15:10 UTC5m
2026-07-07 AUB130 - Jul 7, 13:20 UTCJul 7, 14:15 UTC55m
2026-07-02 AUB130 AUO → AUO Jul 2, 15:25 UTCJul 2, 16:50 UTC1h 25m
2026-07-01 AUB130 AUO → AUO Jul 1, 23:05 UTCJul 2, 00:20 UTC1h 15m
2026-07-01 AUB130 - Jul 1, 16:55 UTCJul 1, 17:00 UTC5m
2026-07-01 AUB130 - Jul 1, 15:10 UTCJul 1, 16:10 UTC1h 0m
2026-06-30 AUB130 AUO → AUO Jun 30, 12:40 UTCJun 30, 14:10 UTC1h 30m
2026-06-30 AUB130 - Jun 30, 03:40 UTCJun 30, 03:45 UTC5m
2026-06-30 AUB130 - Jun 30, 02:50 UTCJun 30, 03:05 UTC15m
2026-06-30 AUB130 - Jun 30, 01:14 UTCJun 30, 02:10 UTC55m
2026-06-29 AUB130 - Jun 29, 20:15 UTCJun 29, 20:24 UTC10m
2026-06-29 AUB130 - Jun 29, 19:09 UTCJun 29, 19:29 UTC20m
2026-06-29 AUB130 - Jun 29, 14:39 UTCJun 29, 15:00 UTC20m
2026-06-29 AUB130 - Jun 29, 13:34 UTCJun 29, 14:04 UTC30m
2026-06-26 AUB130 AUO → AUO Jun 26, 18:29 UTCJun 26, 19:45 UTC1h 15m
2026-06-25 AUB130 - Jun 25, 17:49 UTCJun 25, 17:54 UTC5m
2026-06-25 AUB130 - Jun 25, 16:24 UTCJun 25, 16:39 UTC15m
2026-06-24 AUB130 - Jun 24, 20:54 UTCJun 24, 21:04 UTC10m
2026-06-24 AUB130 - Jun 24, 19:49 UTCJun 24, 20:05 UTC15m
2026-06-24 AUB130 AUO → AUO Jun 24, 16:54 UTCJun 24, 18:15 UTC1h 20m
2026-06-24 AUB130 AUO → AUO Jun 24, 12:25 UTCJun 24, 13:54 UTC1h 30m
2026-06-23 AUB130 AUO → AUO Jun 23, 20:49 UTCJun 23, 21:14 UTC25m
2026-06-23 AUB130 AUO → AUO Jun 23, 16:39 UTCJun 23, 17:50 UTC1h 10m
2026-06-23 AUB130 AUO → AUO Jun 23, 12:49 UTCJun 23, 13:55 UTC1h 5m
2026-06-22 AUB130 AUO → AUO Jun 22, 20:24 UTCJun 22, 21:19 UTC55m
2026-06-15 AUB130 AUO → AUO Jun 15, 21:30 UTCJun 15, 22:00 UTC30m
2026-06-13 AUB130 AUO → AUO Jun 13, 02:30 UTCJun 13, 02:40 UTC10m
2026-06-13 AUB130 AUO → AUO Jun 13, 01:30 UTCJun 13, 02:25 UTC55m
2026-06-12 AUB130 AUO → AUO Jun 12, 18:10 UTCJun 12, 18:30 UTC20m
2026-06-12 AUB130 - Jun 12, 02:20 UTCJun 12, 02:45 UTC25m
2026-06-12 AUB130 - Jun 12, 00:50 UTCJun 12, 01:15 UTC25m
2026-06-11 AUB130 AUO → AUO Jun 11, 16:40 UTCJun 11, 17:40 UTC1h 0m

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 5h 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.