Apparatus

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sensors Mode-S transponder

A01566

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N104UV · DIAMOND DA-40 Club Star · operated by UTAH VALLEY UNIVERSITY

Hex
A01566
Octal
50012546
Decimal
10,491,238
Country
US
Tail
N104UV
Type
DA40
No current signal · last broadcast 2d ago
Flights observed
80
Distinct callsigns
1
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A01566.

Country allocation

The ICAO 24-bit address A01566 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
N104UV - 80 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-13 N104UV - Jun 13, 17:55 UTCJun 13, 18:10 UTC15m
2026-06-13 N104UV - Jun 13, 16:10 UTCJun 13, 16:30 UTC20m
2026-06-13 N104UV - Jun 13, 13:20 UTCJun 13, 14:05 UTC45m
2026-06-12 N104UV - Jun 12, 18:15 UTCJun 12, 19:25 UTC1h 10m
2026-06-12 N104UV PVU → PVU Jun 12, 15:35 UTCJun 12, 16:50 UTC1h 15m
2026-06-12 N104UV PVU → PVU Jun 12, 13:15 UTCJun 12, 14:40 UTC1h 25m
2026-06-11 N104UV - Jun 11, 16:05 UTCJun 11, 17:20 UTC1h 15m
2026-06-11 N104UV - Jun 11, 14:00 UTCJun 11, 15:05 UTC1h 5m
2026-06-10 N104UV - Jun 10, 19:20 UTCJun 10, 20:05 UTC45m
2026-06-10 N104UV - Jun 10, 16:25 UTCJun 10, 17:25 UTC1h 0m
2026-06-10 N104UV PVU → PVU Jun 10, 13:55 UTCJun 10, 15:15 UTC1h 20m
2026-06-09 N104UV - Jun 9, 16:45 UTCJun 9, 17:50 UTC1h 5m
2026-06-08 N104UV PVU → PVU Jun 8, 17:05 UTCJun 8, 18:15 UTC1h 10m
2026-06-08 N104UV - Jun 8, 16:00 UTCJun 8, 16:20 UTC20m
2026-06-08 N104UV - Jun 8, 14:40 UTCJun 8, 15:20 UTC40m
2026-06-05 N104UV - Jun 5, 13:35 UTCJun 5, 15:40 UTC2h 5m
2026-06-05 N104UV - Jun 5, 04:45 UTCJun 5, 06:00 UTC1h 15m
2026-06-05 N104UV - Jun 5, 03:05 UTCJun 5, 04:10 UTC1h 5m
2026-06-04 N104UV PVU → PVU Jun 4, 22:25 UTCJun 4, 23:40 UTC1h 15m
2026-06-04 N104UV PVU → PVU Jun 4, 18:00 UTCJun 4, 18:45 UTC45m
2026-06-04 N104UV - Jun 4, 15:30 UTCJun 4, 16:30 UTC1h 0m
2026-06-04 N104UV - Jun 4, 14:00 UTCJun 4, 14:15 UTC15m
2026-06-04 N104UV - Jun 4, 13:00 UTCJun 4, 13:15 UTC15m
2026-06-03 N104UV PVU → PVU Jun 3, 21:05 UTCJun 3, 21:45 UTC40m
2026-06-03 N104UV - Jun 3, 18:55 UTCJun 3, 20:00 UTC1h 5m
2026-06-03 N104UV - Jun 3, 17:45 UTCJun 3, 18:15 UTC30m
2026-06-03 N104UV - Jun 3, 16:35 UTCJun 3, 16:55 UTC20m
2026-06-03 N104UV PVU → PVU Jun 3, 14:40 UTCJun 3, 15:45 UTC1h 5m
2026-06-03 N104UV PVU → PVU Jun 3, 12:50 UTCJun 3, 13:55 UTC1h 5m
2026-06-03 N104UV - Jun 3, 03:30 UTCJun 3, 05:10 UTC1h 40m
2026-06-02 N104UV - Jun 2, 21:40 UTCJun 2, 23:40 UTC2h 0m
2026-05-21 N104UV - May 21, 00:40 UTCMay 21, 01:50 UTC1h 10m
2026-05-20 N104UV - May 20, 22:40 UTCMay 20, 23:10 UTC30m
2026-05-20 N104UV - May 20, 21:50 UTCMay 20, 22:05 UTC15m
2026-05-20 N104UV PVU → PVU May 20, 18:45 UTCMay 20, 19:40 UTC55m
2026-05-20 N104UV - May 20, 16:50 UTCMay 20, 17:30 UTC40m
2026-05-20 N104UV - May 20, 14:25 UTCMay 20, 15:15 UTC50m
2026-05-19 N104UV - May 19, 19:15 UTCMay 19, 20:05 UTC50m
2026-05-19 N104UV - May 19, 17:35 UTCMay 19, 17:50 UTC15m
2026-05-19 N104UV - May 19, 16:35 UTCMay 19, 16:55 UTC20m
2026-05-19 N104UV - May 19, 14:35 UTCMay 19, 15:20 UTC45m
2026-05-16 N104UV - May 16, 17:15 UTCMay 16, 18:25 UTC1h 10m
2026-05-16 N104UV - May 16, 15:55 UTCMay 16, 16:05 UTC10m
2026-05-16 N104UV - May 16, 15:05 UTCMay 16, 15:16 UTC10m
2026-05-15 N104UV PVU → PVU May 15, 19:15 UTCMay 15, 20:10 UTC55m
2026-05-15 N104UV - May 15, 16:30 UTCMay 15, 17:35 UTC1h 5m
2026-05-15 N104UV PVU → PVU May 15, 14:10 UTCMay 15, 15:10 UTC59m
2026-05-14 N104UV - May 14, 19:45 UTCMay 14, 19:55 UTC10m
2026-05-14 N104UV - May 14, 18:40 UTCMay 14, 18:55 UTC15m
2026-05-14 N104UV PVU → PVU May 14, 16:20 UTCMay 14, 17:35 UTC1h 15m

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 N104UV page for operator, model, and routing details .

Mode-S A01566 frequently asked

What is Mode-S code A01566?
A01566 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N104UV.
Where is Mode-S A01566 registered?
Mode-S code A01566 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 A01566 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A01566, octal 50012546, decimal 10,491,238.
What flights does A01566 operate?
Mode-S A01566 has broadcast 1 distinct callsign, including N104UV.