Apparatus

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sensors Mode-S transponder

A9DC0E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N734YA · CESSNA 172 Skyhawk · operated by LUXAIR LLC

Hex
A9DC0E
Octal
52356016
Decimal
11,131,918
Country
US
Tail
N734YA
Type
C172
No current signal · last broadcast 17h ago
Flights observed
83
Distinct callsigns
1
Country
US
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S A9DC0E.

Country allocation

The ICAO 24-bit address A9DC0E 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
N734YA - 83 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 N734YA CLL → CLL Jul 13, 16:15 UTCJul 13, 16:30 UTC15m
2026-07-12 N734YA - Jul 12, 16:35 UTCJul 12, 17:05 UTC30m
2026-07-12 N734YA - Jul 12, 13:45 UTCJul 12, 14:55 UTC1h 10m
2026-07-12 N734YA - Jul 12, 01:05 UTCJul 12, 01:15 UTC10m
2026-07-11 N734YA - Jul 11, 23:45 UTCJul 11, 23:55 UTC10m
2026-07-10 N734YA - Jul 10, 16:25 UTCJul 10, 17:05 UTC40m
2026-07-09 N734YA CLL → CLL Jul 9, 20:35 UTCJul 9, 21:50 UTC1h 15m
2026-07-07 N734YA - Jul 7, 22:35 UTCJul 7, 22:50 UTC15m
2026-07-07 N734YA - Jul 7, 17:05 UTCJul 7, 17:15 UTC10m
2026-07-07 N734YA - Jul 7, 02:10 UTCJul 7, 04:40 UTC2h 30m
2026-07-06 N734YA - Jul 6, 23:25 UTCJul 7, 00:40 UTC1h 15m
2026-07-06 N734YA - Jul 6, 20:20 UTCJul 6, 20:40 UTC20m
2026-07-06 N734YA - Jul 6, 19:30 UTCJul 6, 19:50 UTC20m
2026-07-02 N734YA CLL → CLL Jul 2, 02:40 UTCJul 2, 04:25 UTC1h 45m
2026-06-30 N734YA CLL → CLL Jun 30, 21:45 UTCJun 30, 23:40 UTC1h 55m
2026-06-30 N734YA - Jun 30, 18:40 UTCJun 30, 19:50 UTC1h 10m
2026-06-29 N734YA - Jun 29, 23:19 UTCJun 29, 23:29 UTC10m
2026-06-29 N734YA - Jun 29, 21:44 UTCJun 29, 21:54 UTC10m
2026-06-29 N734YA - Jun 29, 18:55 UTCJun 29, 20:00 UTC1h 5m
2026-06-29 N734YA - Jun 29, 17:30 UTCJun 29, 17:49 UTC20m
2026-06-29 N734YA - Jun 29, 14:19 UTCJun 29, 16:15 UTC1h 55m
2026-06-28 N734YA - Jun 28, 19:40 UTCJun 28, 19:59 UTC20m
2026-06-28 N734YA - Jun 28, 18:55 UTCJun 28, 19:09 UTC15m
2026-06-28 N734YA - Jun 28, 00:45 UTCJun 28, 00:55 UTC10m
2026-06-27 N734YA - Jun 27, 19:29 UTCJun 27, 19:39 UTC10m
2026-06-26 N734YA CLL → CLL Jun 26, 19:30 UTCJun 26, 20:29 UTC1h 0m
2026-06-24 N734YA - Jun 24, 16:50 UTCJun 24, 18:05 UTC1h 15m
2026-06-24 N734YA - Jun 24, 14:00 UTCJun 24, 15:59 UTC2h 0m
2026-06-22 N734YA - Jun 22, 21:49 UTCJun 22, 23:39 UTC1h 50m
2026-06-22 N734YA - Jun 22, 18:44 UTCJun 22, 20:10 UTC1h 25m
2026-06-22 N734YA - Jun 22, 15:45 UTCJun 22, 16:24 UTC40m
2026-06-21 N734YA - Jun 21, 23:34 UTCJun 21, 23:59 UTC25m
2026-06-21 N734YA - Jun 21, 15:34 UTCJun 21, 15:59 UTC25m
2026-06-20 N734YA - Jun 20, 16:34 UTCJun 20, 17:10 UTC35m
2026-06-19 N734YA - Jun 19, 16:04 UTCJun 19, 16:49 UTC45m
2026-06-13 N734YA - Jun 13, 15:50 UTCJun 13, 16:25 UTC35m
2026-06-12 N734YA - Jun 12, 22:00 UTCJun 12, 22:30 UTC30m
2026-06-11 N734YA - Jun 11, 18:20 UTCJun 11, 18:50 UTC30m
2026-06-11 N734YA - Jun 11, 17:10 UTCJun 11, 17:20 UTC10m
2026-06-09 N734YA - Jun 9, 13:45 UTCJun 9, 15:40 UTC1h 55m
2026-06-08 N734YA - Jun 8, 20:45 UTCJun 8, 22:15 UTC1h 30m
2026-06-08 N734YA CLL → CLL Jun 8, 00:00 UTCJun 8, 00:15 UTC15m
2026-06-07 N734YA - Jun 7, 23:35 UTCJun 7, 23:55 UTC20m
2026-06-07 N734YA - Jun 7, 22:50 UTCJun 7, 23:30 UTC40m
2026-06-02 N734YA - Jun 2, 21:35 UTCJun 2, 22:15 UTC40m
2026-06-01 N734YA - Jun 1, 23:15 UTCJun 1, 23:45 UTC30m
2026-06-01 N734YA - Jun 1, 15:40 UTCJun 1, 15:55 UTC15m
2026-06-01 N734YA - Jun 1, 00:00 UTCJun 1, 00:25 UTC25m
2026-05-28 N734YA - May 28, 22:55 UTCMay 28, 23:25 UTC30m
2026-05-28 N734YA - May 28, 00:00 UTCMay 28, 00:35 UTC35m

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 N734YA page for operator, model, and routing details .

Mode-S A9DC0E frequently asked

What is Mode-S code A9DC0E?
A9DC0E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N734YA.
Where is Mode-S A9DC0E registered?
Mode-S code A9DC0E 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 A9DC0E broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9DC0E, octal 52356016, decimal 11,131,918.
What flights does A9DC0E operate?
Mode-S A9DC0E has broadcast 1 distinct callsign, including N734YA.