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sensors Mode-S transponder

A9DC0B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N734XY · CESSNA 172 Skyhawk · operated by BEND AIRCRAFT MECHANICS LLC

Hex
A9DC0B
Octal
52356013
Decimal
11,131,915
Country
US
Tail
N734XY
Type
C172
No current signal · last broadcast Jul 26, 16:35 UTC
Flights observed
193
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 16:35 UTC

Last known position

Most recent position reported by Mode-S A9DC0B.

Country allocation

The ICAO 24-bit address A9DC0B 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
N734XY - 193 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N734XY - Jul 26, 15:45 UTCJul 26, 16:35 UTC50m
2026-07-26 N734XY - Jul 26, 13:20 UTCJul 26, 14:35 UTC1h 15m
2026-07-26 N734XY - Jul 26, 02:45 UTCJul 26, 03:50 UTC1h 5m
2026-07-25 N734XY - Jul 25, 15:50 UTCJul 25, 16:50 UTC1h 0m
2026-07-25 N734XY - Jul 25, 13:55 UTCJul 25, 14:55 UTC1h 0m
2026-07-24 N734XY - Jul 24, 17:30 UTCJul 24, 18:45 UTC1h 15m
2026-07-24 N734XY - Jul 24, 15:40 UTCJul 24, 16:45 UTC1h 5m
2026-07-22 N734XY - Jul 22, 15:25 UTCJul 22, 16:05 UTC40m
2026-07-20 N734XY - Jul 20, 23:00 UTCJul 20, 23:50 UTC50m
2026-07-20 N734XY - Jul 20, 15:40 UTCJul 20, 16:25 UTC45m
2026-07-19 N734XY - Jul 19, 13:00 UTCJul 19, 13:45 UTC45m
2026-07-18 N734XY - Jul 18, 16:10 UTCJul 18, 18:00 UTC1h 50m
2026-07-18 N734XY - Jul 18, 13:55 UTCJul 18, 15:10 UTC1h 15m
2026-07-17 N734XY - Jul 17, 19:49 UTCJul 17, 20:35 UTC45m
2026-07-17 N734XY - Jul 17, 17:40 UTCJul 17, 18:50 UTC1h 10m
2026-07-16 N734XY - Jul 16, 16:44 UTCJul 16, 17:45 UTC1h 0m
2026-07-15 N734XY - Jul 15, 19:35 UTCJul 15, 20:55 UTC1h 20m
2026-07-15 N734XY - Jul 15, 17:40 UTCJul 15, 18:40 UTC1h 0m
2026-07-15 N734XY - Jul 15, 15:30 UTCJul 15, 16:45 UTC1h 15m
2026-07-14 N734XY - Jul 14, 23:00 UTCJul 15, 00:45 UTC1h 45m
2026-07-14 N734XY - Jul 14, 21:05 UTCJul 14, 21:15 UTC10m
2026-07-14 N734XY - Jul 14, 19:40 UTCJul 14, 19:55 UTC15m
2026-07-14 N734XY - Jul 14, 16:40 UTCJul 14, 17:45 UTC1h 5m
2026-07-13 N734XY - Jul 13, 23:45 UTCJul 14, 00:45 UTC1h 0m
2026-07-13 N734XY - Jul 13, 15:45 UTCJul 13, 17:00 UTC1h 15m
2026-07-12 N734XY - Jul 12, 14:50 UTCJul 12, 15:25 UTC35m
2026-07-11 N734XY - Jul 11, 18:00 UTCJul 11, 19:05 UTC1h 5m
2026-07-11 N734XY - Jul 11, 15:05 UTCJul 11, 16:10 UTC1h 5m
2026-07-10 N734XY - Jul 10, 20:25 UTCJul 10, 20:45 UTC20m
2026-07-10 N734XY - Jul 10, 18:40 UTCJul 10, 19:25 UTC45m
2026-07-10 N734XY - Jul 10, 15:35 UTCJul 10, 16:40 UTC1h 5m
2026-07-10 N734XY - Jul 10, 13:45 UTCJul 10, 14:50 UTC1h 5m
2026-07-09 N734XY - Jul 9, 17:45 UTCJul 9, 18:55 UTC1h 10m
2026-07-09 N734XY - Jul 9, 05:40 UTCJul 9, 06:10 UTC30m
2026-07-08 N734XY - Jul 8, 18:40 UTCJul 8, 19:40 UTC1h 0m
2026-07-08 N734XY - Jul 8, 15:35 UTCJul 8, 16:45 UTC1h 10m
2026-07-08 N734XY - Jul 8, 13:25 UTCJul 8, 14:50 UTC1h 25m
2026-07-05 N734XY - Jul 5, 01:55 UTCJul 5, 03:10 UTC1h 15m
2026-07-04 N734XY - Jul 4, 15:45 UTCJul 4, 17:05 UTC1h 20m
2026-07-03 N734XY - Jul 3, 19:40 UTCJul 3, 22:30 UTC2h 50m
2026-07-03 N734XY - Jul 3, 07:20 UTCJul 3, 08:05 UTC45m
2026-07-03 N734XY - Jul 3, 05:15 UTCJul 3, 06:45 UTC1h 30m
2026-07-02 N734XY - Jul 2, 23:45 UTCJul 3, 00:40 UTC55m
2026-07-02 N734XY - Jul 2, 17:30 UTCJul 2, 18:35 UTC1h 5m
2026-07-02 N734XY - Jul 2, 15:35 UTCJul 2, 16:40 UTC1h 5m
2026-07-02 N734XY - Jul 2, 06:35 UTCJul 2, 06:51 UTC16m
2026-07-02 N734XY - Jul 2, 04:35 UTCJul 2, 05:15 UTC40m
2026-07-02 N734XY - Jul 2, 02:45 UTCJul 2, 03:50 UTC1h 5m
2026-07-02 N734XY - Jul 2, 01:00 UTCJul 2, 01:20 UTC20m
2026-07-01 N734XY - Jul 1, 21:00 UTCJul 1, 22:10 UTC1h 10m

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 N734XY page for operator, model, and routing details .

Mode-S A9DC0B frequently asked

What is Mode-S code A9DC0B?
A9DC0B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N734XY.
Where is Mode-S A9DC0B registered?
Mode-S code A9DC0B 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 A9DC0B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9DC0B, octal 52356013, decimal 11,131,915.
What flights does A9DC0B operate?
Mode-S A9DC0B has broadcast 1 distinct callsign, including N734XY.