Apparatus

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sensors Mode-S transponder

A9DA0D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N734BN · CESSNA 172 Skyhawk · operated by ALAMEDA AERO CLUB

Hex
A9DA0D
Octal
52355015
Decimal
11,131,405
Country
US
Tail
N734BN
Type
C172
No current signal · last broadcast 20h ago
Flights observed
213
Distinct callsigns
1
Country
US
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S A9DA0D.

Country allocation

The ICAO 24-bit address A9DA0D 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
N734BN - 213 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 N734BN - Jul 17, 20:55 UTCJul 17, 21:25 UTC30m
2026-07-17 N734BN - Jul 17, 18:40 UTCJul 17, 19:25 UTC45m
2026-07-17 N734BN OAK → OAK Jul 17, 04:14 UTCJul 17, 04:39 UTC25m
2026-07-16 N734BN OAK → OAK Jul 16, 21:50 UTCJul 17, 00:10 UTC2h 20m
2026-07-16 N734BN - Jul 16, 20:35 UTCJul 16, 20:49 UTC15m
2026-07-16 N734BN - Jul 16, 18:50 UTCJul 16, 19:55 UTC1h 5m
2026-07-16 N734BN OAK → OAK Jul 16, 15:30 UTCJul 16, 17:35 UTC2h 5m
2026-07-16 N734BN LVK → OAK Jul 16, 02:55 UTCJul 16, 03:50 UTC55m
2026-07-16 N734BN OAK → LVK Jul 16, 01:20 UTCJul 16, 02:05 UTC45m
2026-07-15 N734BN OAK → OAK Jul 15, 22:00 UTCJul 16, 00:00 UTC2h 0m
2026-07-15 N734BN OAK → OAK Jul 15, 19:05 UTCJul 15, 20:55 UTC1h 50m
2026-07-15 N734BN OAK → OAK Jul 15, 16:50 UTCJul 15, 18:20 UTC1h 30m
2026-07-15 N734BN OAK → HWD Jul 15, 16:20 UTCJul 15, 16:35 UTC15m
2026-07-15 N734BN OAK → OAK Jul 15, 02:30 UTCJul 15, 03:10 UTC40m
2026-07-14 N734BN OAK → OAK Jul 14, 22:30 UTCJul 14, 23:15 UTC44m
2026-07-14 N734BN SCK → OAK Jul 14, 21:25 UTCJul 14, 22:00 UTC35m
2026-07-14 N734BN - Jul 14, 19:10 UTCJul 14, 20:20 UTC1h 10m
2026-07-14 N734BN - Jul 14, 16:50 UTCJul 14, 18:05 UTC1h 15m
2026-07-14 N734BN OAK → OAK Jul 14, 00:15 UTCJul 14, 02:30 UTC2h 15m
2026-07-13 N734BN - Jul 13, 21:50 UTCJul 13, 22:40 UTC50m
2026-07-13 N734BN - Jul 13, 20:35 UTCJul 13, 21:35 UTC1h 0m
2026-07-13 N734BN - Jul 13, 18:50 UTCJul 13, 19:45 UTC55m
2026-07-13 N734BN - Jul 13, 17:25 UTCJul 13, 18:05 UTC40m
2026-07-13 N734BN - Jul 13, 02:15 UTCJul 13, 02:25 UTC10m
2026-07-12 N734BN - Jul 12, 23:45 UTCJul 13, 01:40 UTC1h 55m
2026-07-12 N734BN - Jul 12, 22:10 UTCJul 12, 22:55 UTC45m
2026-07-12 N734BN - Jul 12, 19:20 UTCJul 12, 21:30 UTC2h 10m
2026-07-12 N734BN OAK → OAK Jul 12, 16:40 UTCJul 12, 18:55 UTC2h 15m
2026-07-12 N734BN - Jul 12, 03:01 UTCJul 12, 03:15 UTC14m
2026-07-12 N734BN - Jul 12, 00:20 UTCJul 12, 02:30 UTC2h 10m
2026-07-11 N734BN OAK → OAK Jul 11, 03:25 UTCJul 11, 04:05 UTC40m
2026-07-11 N734BN - Jul 11, 02:15 UTCJul 11, 02:25 UTC10m
2026-07-10 N734BN SQL → SQL Jul 10, 22:05 UTCJul 11, 02:00 UTC3h 55m
2026-07-10 N734BN OAK → SQL Jul 10, 20:55 UTCJul 10, 21:05 UTC10m
2026-07-10 N734BN CCR → OAK Jul 10, 15:50 UTCJul 10, 17:30 UTC1h 40m
2026-07-10 N734BN OAK → CCR Jul 10, 15:15 UTCJul 10, 15:25 UTC10m
2026-07-10 N734BN - Jul 10, 04:10 UTCJul 10, 04:30 UTC20m
2026-07-10 N734BN - Jul 10, 03:45 UTCJul 10, 03:50 UTC5m
2026-07-10 N734BN - Jul 10, 02:45 UTCJul 10, 03:05 UTC20m
2026-07-10 N734BN - Jul 10, 02:30 UTCJul 10, 02:40 UTC10m
2026-07-10 N734BN - Jul 10, 01:55 UTCJul 10, 02:20 UTC25m
2026-07-09 N734BN OAK → OAK Jul 9, 23:15 UTCJul 9, 23:30 UTC15m
2026-07-09 N734BN OAK → OAK Jul 9, 22:20 UTCJul 9, 23:10 UTC50m
2026-07-09 N734BN HWD → OAK Jul 9, 19:20 UTCJul 9, 20:45 UTC1h 25m
2026-07-09 N734BN - Jul 9, 02:35 UTCJul 9, 02:55 UTC20m
2026-07-09 N734BN - Jul 9, 01:40 UTCJul 9, 02:05 UTC25m
2026-07-08 N734BN - Jul 8, 22:20 UTCJul 9, 00:15 UTC1h 55m
2026-07-08 N734BN - Jul 8, 21:10 UTCJul 8, 21:35 UTC25m
2026-07-08 N734BN OAK → OAK Jul 8, 18:20 UTCJul 8, 19:55 UTC1h 35m
2026-07-08 N734BN OAK → OAK Jul 8, 14:15 UTCJul 8, 16:10 UTC1h 55m

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 N734BN page for operator, model, and routing details .

Mode-S A9DA0D frequently asked

What is Mode-S code A9DA0D?
A9DA0D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N734BN.
Where is Mode-S A9DA0D registered?
Mode-S code A9DA0D 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 A9DA0D broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9DA0D, octal 52355015, decimal 11,131,405.
What flights does A9DA0D operate?
Mode-S A9DA0D has broadcast 1 distinct callsign, including N734BN.