Apparatus

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sensors Mode-S transponder

AD3D45

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N952ND · PIPER PA-28-140/150/160/180 · operated by UNIVERSITY OF NORTH DAKOTA, C/O JOHN D ODEGARD SCHOOL OF AEROSPACE SCIENCES

Hex
AD3D45
Octal
53236505
Decimal
11,353,413
Country
US
Tail
N952ND
Type
P28A
No current signal · last broadcast 10d ago
Flights observed
151
Distinct callsigns
1
Country
US
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S AD3D45.

Country allocation

The ICAO 24-bit address AD3D45 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
NDU52 - 151 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 NDU52 - Jul 24, 00:20 UTCJul 24, 01:00 UTC40m
2026-07-23 NDU52 - Jul 23, 21:05 UTCJul 23, 22:45 UTC1h 40m
2026-07-23 NDU52 - Jul 23, 18:40 UTCJul 23, 19:45 UTC1h 5m
2026-07-23 NDU52 - Jul 23, 16:20 UTCJul 23, 17:15 UTC55m
2026-07-23 NDU52 - Jul 23, 14:10 UTCJul 23, 14:55 UTC45m
2026-07-23 NDU52 GFK → GFK Jul 23, 03:20 UTCJul 23, 05:00 UTC1h 40m
2026-07-22 NDU52 - Jul 22, 17:25 UTCJul 22, 17:50 UTC25m
2026-07-22 NDU52 - Jul 22, 03:00 UTCJul 22, 04:00 UTC1h 0m
2026-07-21 NDU52 - Jul 21, 17:15 UTCJul 21, 18:25 UTC1h 10m
2026-07-20 NDU52 - Jul 20, 13:10 UTCJul 20, 13:50 UTC40m
2026-07-16 NDU52 - Jul 16, 18:44 UTCJul 16, 19:30 UTC45m
2026-07-15 NDU52 - Jul 15, 19:25 UTCJul 15, 19:45 UTC20m
2026-07-15 NDU52 - Jul 15, 14:50 UTCJul 15, 15:10 UTC20m
2026-07-15 NDU52 - Jul 15, 12:10 UTCJul 15, 13:40 UTC1h 30m
2026-07-15 NDU52 - Jul 15, 03:40 UTCJul 15, 04:30 UTC50m
2026-07-15 NDU52 - Jul 15, 01:35 UTCJul 15, 02:55 UTC1h 20m
2026-07-14 NDU52 - Jul 14, 23:45 UTCJul 15, 00:45 UTC1h 0m
2026-07-14 NDU52 - Jul 14, 21:45 UTCJul 14, 22:55 UTC1h 9m
2026-07-14 NDU52 - Jul 14, 12:45 UTCJul 14, 13:50 UTC1h 5m
2026-07-14 NDU52 - Jul 14, 03:00 UTCJul 14, 03:50 UTC50m
2026-07-13 NDU52 - Jul 13, 23:05 UTCJul 13, 23:30 UTC25m
2026-07-11 NDU52 - Jul 11, 19:15 UTCJul 11, 20:40 UTC1h 25m
2026-07-11 NDU52 - Jul 11, 16:50 UTCJul 11, 18:15 UTC1h 25m
2026-07-11 NDU52 - Jul 11, 13:00 UTCJul 11, 14:00 UTC1h 0m
2026-07-10 NDU52 - Jul 10, 16:50 UTCJul 10, 17:00 UTC10m
2026-07-10 NDU52 - Jul 10, 13:45 UTCJul 10, 15:10 UTC1h 25m
2026-07-09 NDU52 - Jul 9, 18:00 UTCJul 9, 19:10 UTC1h 10m
2026-07-09 NDU52 - Jul 9, 16:15 UTCJul 9, 16:35 UTC20m
2026-07-09 NDU52 - Jul 9, 13:55 UTCJul 9, 15:00 UTC1h 5m
2026-07-09 NDU52 - Jul 9, 01:25 UTCJul 9, 03:15 UTC1h 50m
2026-07-08 NDU52 - Jul 8, 21:50 UTCJul 8, 22:10 UTC20m
2026-07-08 NDU52 - Jul 8, 19:40 UTCJul 8, 20:05 UTC25m
2026-07-08 NDU52 - Jul 8, 16:00 UTCJul 8, 16:45 UTC45m
2026-07-08 NDU52 - Jul 8, 14:55 UTCJul 8, 15:25 UTC30m
2026-07-07 NDU52 - Jul 7, 18:05 UTCJul 7, 18:35 UTC30m
2026-07-07 NDU52 - Jul 7, 13:20 UTCJul 7, 14:00 UTC40m
2026-07-07 NDU52 - Jul 7, 01:15 UTCJul 7, 01:55 UTC40m
2026-07-06 NDU52 - Jul 6, 20:50 UTCJul 6, 21:20 UTC30m
2026-07-06 NDU52 - Jul 6, 14:05 UTCJul 6, 14:40 UTC35m
2026-07-02 NDU52 - Jul 2, 20:50 UTCJul 2, 22:00 UTC1h 10m
2026-07-02 NDU52 - Jul 2, 03:45 UTCJul 2, 04:40 UTC55m
2026-07-01 NDU52 - Jul 1, 18:15 UTCJul 1, 18:35 UTC20m
2026-07-01 NDU52 - Jul 1, 16:40 UTCJul 1, 16:55 UTC15m
2026-07-01 NDU52 - Jul 1, 15:55 UTCJul 1, 16:10 UTC15m
2026-07-01 NDU52 - Jul 1, 14:00 UTCJul 1, 15:05 UTC1h 5m
2026-07-01 NDU52 - Jul 1, 12:35 UTCJul 1, 13:20 UTC45m
2026-06-30 NDU52 - Jun 30, 15:00 UTCJun 30, 15:25 UTC25m
2026-06-30 NDU52 - Jun 30, 12:00 UTCJun 30, 12:10 UTC10m
2026-06-27 NDU52 - Jun 27, 00:00 UTCJun 27, 00:34 UTC35m
2026-06-23 NDU52 - Jun 23, 00:54 UTCJun 23, 02:15 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 N952ND page for operator, model, and routing details .

Mode-S AD3D45 frequently asked

What is Mode-S code AD3D45?
AD3D45 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N952ND.
Where is Mode-S AD3D45 registered?
Mode-S code AD3D45 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 AD3D45 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 AD3D45, octal 53236505, decimal 11,353,413.
What flights does AD3D45 operate?
Mode-S AD3D45 has broadcast 1 distinct callsign, including NDU52.