Apparatus

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sensors Mode-S transponder

A9DAFA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N734M · DIAMOND DA-40 Club Star · operated by UTAH STATE UNIVERSITY

Hex
A9DAFA
Octal
52355372
Decimal
11,131,642
Country
US
Tail
N734M
Type
DA40
No current signal · last broadcast 27d ago
Flights observed
259
Distinct callsigns
1
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S A9DAFA.

Country allocation

The ICAO 24-bit address A9DAFA 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
N734M - 259 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 N734M LGU → LGU Jul 25, 14:30 UTCJul 25, 14:40 UTC10m
2026-07-24 N734M LGU → LGU Jul 24, 21:10 UTCJul 24, 22:10 UTC1h 0m
2026-07-24 N734M MLD → LGU Jul 24, 19:05 UTCJul 24, 19:40 UTC35m
2026-07-24 N734M - Jul 24, 14:50 UTCJul 24, 15:15 UTC25m
2026-07-24 N734M LGU → LGU Jul 24, 00:00 UTCJul 24, 01:10 UTC1h 10m
2026-07-22 N734M LGU → LGU Jul 22, 17:15 UTCJul 22, 18:15 UTC1h 0m
2026-07-22 N734M LGU → LGU Jul 22, 15:20 UTCJul 22, 16:30 UTC1h 10m
2026-07-22 N734M LGU → LGU Jul 22, 13:35 UTCJul 22, 13:55 UTC20m
2026-07-22 N734M - Jul 22, 04:40 UTCJul 22, 05:25 UTC45m
2026-07-21 N734M LGU → LGU Jul 21, 22:45 UTCJul 21, 23:40 UTC55m
2026-07-21 N734M - Jul 21, 19:35 UTCJul 21, 20:50 UTC1h 15m
2026-07-21 N734M LGU → LGU Jul 21, 16:40 UTCJul 21, 19:00 UTC2h 20m
2026-07-20 N734M - Jul 20, 18:45 UTCJul 20, 19:00 UTC15m
2026-07-20 N734M - Jul 20, 17:40 UTCJul 20, 18:10 UTC30m
2026-07-20 N734M LGU → LGU Jul 20, 14:50 UTCJul 20, 15:10 UTC20m
2026-07-19 N734M LGU → LGU Jul 19, 14:50 UTCJul 19, 16:00 UTC1h 10m
2026-07-18 N734M LGU → LGU Jul 18, 22:35 UTCJul 18, 23:30 UTC55m
2026-07-18 N734M LGU → LGU Jul 18, 18:40 UTCJul 18, 20:05 UTC1h 25m
2026-07-18 N734M LGU → LGU Jul 18, 16:20 UTCJul 18, 17:40 UTC1h 20m
2026-07-16 N734M - Jul 16, 14:29 UTCJul 16, 14:35 UTC5m
2026-07-16 N734M LGU → LGU Jul 16, 06:05 UTCJul 16, 07:50 UTC1h 45m
2026-07-15 N734M LGU → LGU Jul 15, 15:55 UTCJul 15, 16:45 UTC50m
2026-07-15 N734M LGU → LGU Jul 15, 13:20 UTCJul 15, 14:45 UTC1h 25m
2026-07-15 N734M LGU → LGU Jul 15, 04:55 UTCJul 15, 05:30 UTC35m
2026-07-13 N734M LGU → LGU Jul 13, 16:40 UTCJul 13, 18:00 UTC1h 20m
2026-07-13 N734M - Jul 13, 15:35 UTCJul 13, 15:50 UTC15m
2026-07-13 N734M - Jul 13, 13:00 UTCJul 13, 15:00 UTC2h 0m
2026-07-12 N734M LGU → LGU Jul 12, 16:20 UTCJul 12, 18:15 UTC1h 55m
2026-07-12 N734M LGU → LGU Jul 12, 04:30 UTCJul 12, 07:01 UTC2h 30m
2026-07-11 N734M LGU → LGU Jul 11, 21:30 UTCJul 11, 22:50 UTC1h 20m
2026-07-11 N734M - Jul 11, 17:55 UTCJul 11, 18:05 UTC10m
2026-07-11 N734M - Jul 11, 14:05 UTCJul 11, 14:10 UTC5m
2026-07-11 N734M LGU → LGU Jul 11, 03:50 UTCJul 11, 04:01 UTC10m
2026-07-11 N734M LGU → LGU Jul 11, 03:25 UTCJul 11, 03:45 UTC20m
2026-07-10 N734M LGU → LGU Jul 10, 23:00 UTCJul 11, 00:30 UTC1h 30m
2026-07-10 N734M - Jul 10, 20:35 UTCJul 10, 21:30 UTC55m
2026-07-10 N734M - Jul 10, 19:15 UTCJul 10, 20:30 UTC1h 15m
2026-07-10 N734M - Jul 10, 15:40 UTCJul 10, 16:05 UTC25m
2026-07-10 N734M - Jul 10, 14:40 UTCJul 10, 15:05 UTC25m
2026-07-10 N734M LGU → LGU Jul 10, 04:05 UTCJul 10, 05:45 UTC1h 40m
2026-07-10 N734M LGU → LGU Jul 10, 00:05 UTCJul 10, 01:15 UTC1h 10m
2026-07-09 N734M - Jul 9, 16:20 UTCJul 9, 16:45 UTC25m
2026-07-08 N734M LGU → LGU Jul 8, 16:00 UTCJul 8, 16:35 UTC35m
2026-07-08 N734M LGU → LGU Jul 8, 14:00 UTCJul 8, 14:40 UTC40m
2026-07-08 N734M LGU → LGU Jul 8, 03:50 UTCJul 8, 03:55 UTC5m
2026-07-08 N734M LGU → LGU Jul 8, 00:10 UTCJul 8, 02:20 UTC2h 10m
2026-07-07 N734M LGU → LGU Jul 7, 17:30 UTCJul 7, 18:40 UTC1h 10m
2026-07-07 N734M LGU → LGU Jul 7, 13:55 UTCJul 7, 15:10 UTC1h 15m
2026-07-06 N734M LGU → LGU Jul 6, 17:15 UTCJul 6, 17:40 UTC25m
2026-07-06 N734M LGU → LGU Jul 6, 14:30 UTCJul 6, 15:50 UTC1h 20m

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 N734M page for operator, model, and routing details .

Mode-S A9DAFA frequently asked

What is Mode-S code A9DAFA?
A9DAFA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N734M.
Where is Mode-S A9DAFA registered?
Mode-S code A9DAFA 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 A9DAFA broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9DAFA, octal 52355372, decimal 11,131,642.
What flights does A9DAFA operate?
Mode-S A9DAFA has broadcast 1 distinct callsign, including N734M.