Apparatus

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sensors Mode-S transponder

A9F1D6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N74SW · DIAMOND DA-40 Club Star · operated by UTAH STATE UNIVERSITY

Hex
A9F1D6
Octal
52370726
Decimal
11,137,494
Country
US
Tail
N74SW
Type
DA40
No current signal · last broadcast 10d ago
Flights observed
256
Distinct callsigns
1
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S A9F1D6.

Country allocation

The ICAO 24-bit address A9F1D6 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
N74SW - 256 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N74SW - Jul 24, 19:05 UTCJul 24, 20:00 UTC55m
2026-07-24 N74SW - Jul 24, 17:00 UTCJul 24, 18:30 UTC1h 30m
2026-07-24 N74SW LGU → LGU Jul 24, 14:40 UTCJul 24, 16:15 UTC1h 35m
2026-07-24 N74SW - Jul 24, 01:05 UTCJul 24, 01:15 UTC10m
2026-07-23 N74SW - Jul 23, 23:20 UTCJul 23, 23:40 UTC20m
2026-07-23 N74SW LGU → LGU Jul 23, 17:00 UTCJul 23, 17:30 UTC30m
2026-07-23 N74SW LGU → LGU Jul 23, 15:10 UTCJul 23, 16:05 UTC55m
2026-07-22 N74SW LGU → LGU Jul 22, 16:55 UTCJul 22, 18:35 UTC1h 40m
2026-07-22 N74SW LGU → LGU Jul 22, 15:20 UTCJul 22, 15:40 UTC20m
2026-07-21 N74SW LGU → LGU Jul 21, 17:45 UTCJul 21, 18:40 UTC55m
2026-07-21 N74SW LGU → LGU Jul 21, 16:25 UTCJul 21, 16:35 UTC10m
2026-07-21 N74SW LGU → LGU Jul 21, 14:40 UTCJul 21, 16:20 UTC1h 40m
2026-07-21 N74SW - Jul 21, 05:30 UTCJul 21, 06:05 UTC35m
2026-07-21 N74SW - Jul 21, 04:00 UTCJul 21, 04:25 UTC25m
2026-07-21 N74SW LGU → LGU Jul 21, 01:25 UTCJul 21, 02:15 UTC50m
2026-07-20 N74SW LGU → LGU Jul 20, 22:25 UTCJul 20, 23:00 UTC35m
2026-07-20 N74SW LGU → LGU Jul 20, 18:20 UTCJul 20, 18:55 UTC35m
2026-07-20 N74SW - Jul 20, 16:00 UTCJul 20, 16:30 UTC30m
2026-07-20 N74SW - Jul 20, 14:35 UTCJul 20, 15:00 UTC25m
2026-07-20 N74SW LGU → LGU Jul 20, 02:05 UTCJul 20, 03:20 UTC1h 15m
2026-07-20 N74SW - Jul 20, 00:05 UTCJul 20, 00:45 UTC40m
2026-07-19 N74SW LGU → LGU Jul 19, 23:45 UTCJul 20, 00:00 UTC15m
2026-07-19 N74SW - Jul 19, 18:50 UTCJul 19, 19:05 UTC15m
2026-07-19 N74SW - Jul 19, 12:45 UTCJul 19, 13:15 UTC30m
2026-07-18 N74SW - Jul 18, 19:25 UTCJul 18, 19:50 UTC25m
2026-07-18 N74SW - Jul 18, 18:25 UTCJul 18, 18:30 UTC5m
2026-07-18 N74SW - Jul 18, 17:15 UTCJul 18, 17:30 UTC15m
2026-07-17 N74SW - Jul 17, 15:44 UTCJul 17, 16:44 UTC1h 0m
2026-07-17 N74SW - Jul 17, 14:00 UTCJul 17, 15:10 UTC1h 10m
2026-07-16 N74SW - Jul 16, 19:45 UTCJul 16, 20:00 UTC15m
2026-07-16 N74SW - Jul 16, 18:29 UTCJul 16, 18:55 UTC25m
2026-07-16 N74SW - Jul 16, 16:00 UTCJul 16, 16:25 UTC25m
2026-07-16 N74SW - Jul 16, 15:10 UTCJul 16, 15:30 UTC20m
2026-07-16 N74SW - Jul 16, 13:25 UTCJul 16, 14:00 UTC35m
2026-07-15 N74SW LGU → LGU Jul 15, 23:50 UTCJul 16, 01:05 UTC1h 15m
2026-07-15 N74SW - Jul 15, 18:35 UTCJul 15, 19:15 UTC40m
2026-07-15 N74SW - Jul 15, 16:00 UTCJul 15, 16:05 UTC5m
2026-07-15 N74SW - Jul 15, 13:50 UTCJul 15, 14:15 UTC25m
2026-07-15 N74SW LGU → LGU Jul 15, 04:10 UTCJul 15, 04:45 UTC35m
2026-07-14 N74SW LGU → LGU Jul 14, 16:10 UTCJul 14, 17:05 UTC55m
2026-07-14 N74SW - Jul 14, 14:50 UTCJul 14, 15:10 UTC20m
2026-07-14 N74SW LGU → LGU Jul 14, 13:45 UTCJul 14, 14:45 UTC1h 0m
2026-07-14 N74SW LGU → LGU Jul 14, 05:15 UTCJul 14, 07:30 UTC2h 15m
2026-07-14 N74SW - Jul 14, 01:35 UTCJul 14, 02:25 UTC50m
2026-07-14 N74SW - Jul 14, 00:10 UTCJul 14, 00:35 UTC25m
2026-07-13 N74SW - Jul 13, 22:20 UTCJul 13, 22:55 UTC35m
2026-07-11 N74SW - Jul 11, 18:00 UTCJul 11, 19:20 UTC1h 20m
2026-07-11 N74SW LGU → LGU Jul 11, 15:35 UTCJul 11, 17:20 UTC1h 45m
2026-07-10 N74SW LGU → LGU Jul 10, 17:50 UTCJul 10, 19:25 UTC1h 35m
2026-07-10 N74SW LGU → LGU Jul 10, 15:05 UTCJul 10, 17:00 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 N74SW page for operator, model, and routing details .

Mode-S A9F1D6 frequently asked

What is Mode-S code A9F1D6?
A9F1D6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N74SW.
Where is Mode-S A9F1D6 registered?
Mode-S code A9F1D6 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 A9F1D6 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9F1D6, octal 52370726, decimal 11,137,494.
What flights does A9F1D6 operate?
Mode-S A9F1D6 has broadcast 1 distinct callsign, including N74SW.