Apparatus

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sensors Mode-S transponder

A5DCF1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N477UV · PIPER PA-44 Seminole · operated by UTAH VALLEY UNIVERSITY

Hex
A5DCF1
Octal
51356361
Decimal
10,870,001
Country
US
Tail
N477UV
Type
PA44
No current signal · last broadcast 5h ago
Flights observed
80
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A5DCF1.

Country allocation

The ICAO 24-bit address A5DCF1 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
N477UV - 80 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N477UV PVU → PVU Jul 14, 14:20 UTCJul 14, 14:55 UTC35m
2026-07-10 N477UV PVU → PVU Jul 10, 19:15 UTCJul 10, 20:25 UTC1h 10m
2026-07-10 N477UV PVU → PVU Jul 10, 16:50 UTCJul 10, 18:05 UTC1h 15m
2026-07-10 N477UV PVU → PVU Jul 10, 14:50 UTCJul 10, 15:55 UTC1h 5m
2026-07-02 N477UV - Jul 2, 15:20 UTCJul 2, 17:15 UTC1h 55m
2026-07-01 N477UV PVU → PVU Jul 1, 18:40 UTCJul 1, 19:45 UTC1h 5m
2026-07-01 N477UV PVU → PVU Jul 1, 16:05 UTCJul 1, 16:45 UTC40m
2026-07-01 N477UV PVU → PVU Jul 1, 14:00 UTCJul 1, 14:45 UTC45m
2026-06-30 N477UV PVU → PVU Jun 30, 19:00 UTCJun 30, 20:05 UTC1h 5m
2026-06-30 N477UV - Jun 30, 16:25 UTCJun 30, 17:15 UTC50m
2026-06-29 N477UV - Jun 29, 16:39 UTCJun 29, 17:49 UTC1h 10m
2026-06-25 N477UV PVU → PVU Jun 25, 19:05 UTCJun 25, 20:49 UTC1h 45m
2026-06-24 N477UV PVU → PVU Jun 24, 18:44 UTCJun 24, 19:49 UTC1h 5m
2026-06-24 N477UV PVU → PVU Jun 24, 13:54 UTCJun 24, 15:00 UTC1h 5m
2026-06-23 N477UV - Jun 23, 16:39 UTCJun 23, 17:34 UTC55m
2026-06-22 N477UV PVU → PVU Jun 22, 14:40 UTCJun 22, 15:14 UTC35m
2026-06-20 N477UV - Jun 20, 17:39 UTCJun 20, 17:54 UTC15m
2026-06-20 N477UV - Jun 20, 15:24 UTCJun 20, 15:44 UTC20m
2026-06-19 N477UV - Jun 19, 16:14 UTCJun 19, 17:09 UTC55m
2026-06-19 N477UV - Jun 19, 13:50 UTCJun 19, 14:29 UTC40m
2026-06-19 N477UV - Jun 19, 01:10 UTCJun 19, 02:09 UTC1h 0m
2026-06-18 N477UV - Jun 18, 20:45 UTCJun 18, 21:30 UTC45m
2026-06-18 N477UV - Jun 18, 17:50 UTCJun 18, 18:05 UTC15m
2026-06-18 N477UV - Jun 18, 14:10 UTCJun 18, 14:50 UTC40m
2026-06-17 N477UV PVU → PVU Jun 17, 17:00 UTCJun 17, 17:35 UTC35m
2026-06-16 N477UV PVU → PVU Jun 16, 15:40 UTCJun 16, 16:39 UTC1h 0m
2026-06-16 N477UV - Jun 16, 13:44 UTCJun 16, 14:30 UTC45m
2026-06-12 N477UV PVU → PVU Jun 12, 20:50 UTCJun 12, 22:10 UTC1h 20m
2026-06-12 N477UV PVU → PVU Jun 12, 15:00 UTCJun 12, 15:55 UTC55m
2026-06-11 N477UV - Jun 11, 18:55 UTCJun 11, 20:00 UTC1h 5m
2026-06-11 N477UV PVU → PVU Jun 11, 15:40 UTCJun 11, 17:05 UTC1h 25m
2026-06-10 N477UV - Jun 10, 16:20 UTCJun 10, 16:45 UTC25m
2026-06-10 N477UV - Jun 10, 13:30 UTCJun 10, 14:15 UTC45m
2026-06-09 N477UV PVU → PVU Jun 9, 17:10 UTCJun 9, 18:20 UTC1h 10m
2026-06-08 N477UV PVU → PVU Jun 8, 14:50 UTCJun 8, 15:30 UTC40m
2026-06-08 N477UV - Jun 8, 13:25 UTCJun 8, 13:55 UTC30m
2026-06-06 N477UV PVU → PVU Jun 6, 13:34 UTCJun 6, 14:50 UTC1h 15m
2026-06-05 N477UV PVU → PVU Jun 5, 21:25 UTCJun 5, 22:50 UTC1h 25m
2026-06-05 N477UV - Jun 5, 14:35 UTCJun 5, 15:30 UTC55m
2026-06-04 N477UV PVU → PVU Jun 4, 19:40 UTCJun 4, 20:35 UTC55m
2026-06-04 N477UV PVU → PVU Jun 4, 17:00 UTCJun 4, 18:15 UTC1h 15m
2026-06-03 N477UV - Jun 3, 19:55 UTCJun 3, 20:20 UTC25m
2026-06-03 N477UV - Jun 3, 14:25 UTCJun 3, 15:25 UTC1h 0m
2026-06-02 N477UV PVU → PVU Jun 2, 22:55 UTCJun 2, 23:30 UTC35m
2026-06-02 N477UV PVU → PVU Jun 2, 20:40 UTCJun 2, 21:50 UTC1h 10m
2026-06-02 N477UV - Jun 2, 17:25 UTCJun 2, 18:05 UTC40m
2026-06-02 N477UV PVU → PVU Jun 2, 15:45 UTCJun 2, 16:15 UTC30m
2026-06-02 N477UV PVU → PVU Jun 2, 13:35 UTCJun 2, 14:45 UTC1h 10m
2026-06-01 N477UV PVU → PVU Jun 1, 16:00 UTCJun 1, 16:40 UTC40m
2026-06-01 N477UV PVU → PVU Jun 1, 13:15 UTCJun 1, 14:20 UTC1h 5m

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 N477UV page for operator, model, and routing details .

Mode-S A5DCF1 frequently asked

What is Mode-S code A5DCF1?
A5DCF1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N477UV.
Where is Mode-S A5DCF1 registered?
Mode-S code A5DCF1 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 A5DCF1 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5DCF1, octal 51356361, decimal 10,870,001.
What flights does A5DCF1 operate?
Mode-S A5DCF1 has broadcast 1 distinct callsign, including N477UV.