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sensors Mode-S transponder

A9DB8D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N734SX · CESSNA 172 Skyhawk · operated by MONDO BEYONDO THRILL SQUADRON

Hex
A9DB8D
Octal
52355615
Decimal
11,131,789
Country
US
Tail
N734SX
Type
C172
No current signal · last broadcast 22h ago
Flights observed
35
Distinct callsigns
1
Country
US
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S A9DB8D.

Country allocation

The ICAO 24-bit address A9DB8D 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
N734SX - 35 2026-07-13

Recent flights last 35

DateFlightRouteTakeoffLandingDuration
2026-07-13 N734SX EMT → EMT Jul 13, 16:15 UTCJul 13, 17:15 UTC1h 0m
2026-07-11 N734SX - Jul 11, 22:25 UTCJul 11, 23:05 UTC40m
2026-07-11 N734SX - Jul 11, 17:15 UTCJul 11, 18:00 UTC45m
2026-07-11 N734SX - Jul 11, 00:55 UTCJul 11, 02:05 UTC1h 10m
2026-07-09 N734SX EMT → EMT Jul 9, 16:10 UTCJul 9, 17:05 UTC55m
2026-07-07 N734SX EMT → EMT Jul 7, 20:40 UTCJul 7, 21:05 UTC25m
2026-07-07 N734SX EMT → EMT Jul 7, 18:40 UTCJul 7, 19:00 UTC20m
2026-07-07 N734SX EMT → EMT Jul 7, 16:40 UTCJul 7, 17:25 UTC45m
2026-07-06 N734SX - Jul 6, 17:30 UTCJul 6, 18:35 UTC1h 5m
2026-07-04 N734SX RAL → EMT Jul 4, 17:40 UTCJul 4, 18:20 UTC40m
2026-07-04 N734SX - Jul 4, 17:05 UTCJul 4, 17:30 UTC25m
2026-07-02 N734SX EMT → EMT Jul 2, 19:20 UTCJul 2, 20:15 UTC55m
2026-06-30 N734SX - Jun 30, 20:00 UTCJun 30, 21:30 UTC1h 30m
2026-06-30 N734SX EMT → EMT Jun 30, 16:05 UTCJun 30, 16:50 UTC45m
2026-06-30 N734SX EMT → EMT Jun 30, 01:00 UTCJun 30, 01:50 UTC50m
2026-06-27 N734SX EMT → EMT Jun 27, 18:35 UTCJun 27, 19:00 UTC25m
2026-06-23 N734SX EMT → EMT Jun 23, 17:20 UTCJun 23, 17:50 UTC30m
2026-06-23 N734SX - Jun 23, 01:20 UTCJun 23, 02:09 UTC50m
2026-06-22 N734SX - Jun 22, 18:09 UTCJun 22, 18:19 UTC10m
2026-06-20 N734SX - Jun 20, 23:04 UTCJun 20, 23:45 UTC40m
2026-06-20 N734SX EMT → EMT Jun 20, 17:24 UTCJun 20, 18:04 UTC40m
2026-06-20 N734SX - Jun 20, 00:19 UTCJun 20, 00:29 UTC10m
2026-06-19 N734SX - Jun 19, 23:29 UTCJun 19, 23:39 UTC10m
2026-06-19 N734SX EMT → EMT Jun 19, 17:44 UTCJun 19, 18:05 UTC20m
2026-06-18 N734SX EMT → EMT Jun 18, 16:05 UTCJun 18, 16:50 UTC45m
2026-06-17 N734SX - Jun 17, 23:10 UTCJun 18, 00:35 UTC1h 25m
2026-06-15 N734SX EMT → EMT Jun 15, 20:04 UTCJun 15, 20:30 UTC25m
2026-06-15 N734SX - Jun 15, 18:25 UTCJun 15, 19:14 UTC50m
2026-06-15 N734SX - Jun 15, 16:30 UTCJun 15, 17:04 UTC35m
2026-06-13 N734SX - Jun 13, 17:25 UTCJun 13, 18:00 UTC35m
2026-06-12 N734SX EMT → EMT Jun 12, 17:05 UTCJun 12, 17:55 UTC50m
2026-06-09 N734SX - Jun 9, 17:40 UTCJun 9, 18:40 UTC1h 0m
2026-06-08 N734SX - Jun 8, 21:00 UTCJun 8, 21:15 UTC15m
2026-06-08 N734SX - Jun 8, 19:30 UTCJun 8, 19:50 UTC20m
2026-06-03 N734SX EMT → EMT Jun 3, 21:45 UTCJun 3, 22:00 UTC15m

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 N734SX page for operator, model, and routing details .

Mode-S A9DB8D frequently asked

What is Mode-S code A9DB8D?
A9DB8D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N734SX.
Where is Mode-S A9DB8D registered?
Mode-S code A9DB8D 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 A9DB8D broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9DB8D, octal 52355615, decimal 11,131,789.
What flights does A9DB8D operate?
Mode-S A9DB8D has broadcast 1 distinct callsign, including N734SX.